{"id":2392,"date":"2025-09-04T01:44:37","date_gmt":"2025-09-04T01:44:37","guid":{"rendered":"https:\/\/flj-pcb.com\/?page_id=2392"},"modified":"2025-09-26T07:07:14","modified_gmt":"2025-09-26T07:07:14","slug":"hasl-pcb","status":"publish","type":"page","link":"https:\/\/flj-pcb.com\/cs\/pcb-manufacturer\/hasl-pcb\/","title":{"rendered":"HASL PCB"},"content":{"rendered":"<div data-elementor-type=\"wp-page\" data-elementor-id=\"2392\" class=\"elementor elementor-2392\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-65ddd57 e-flex e-con-boxed e-con e-parent\" data-id=\"65ddd57\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-98f65cf elementor-widget elementor-widget-text-editor\" data-id=\"98f65cf\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2 class=\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\"><strong>Co je HASL?<\/strong><\/h2><div class=\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\">HASL znamen\u00e1 Hot Air Solder Leveling, p\u00e1jen\u00ed hork\u00fdm vzduchem. Lidov\u011b se mu tak\u00e9 \u0159\u00edk\u00e1 vyrovn\u00e1v\u00e1n\u00ed p\u00e1jen\u00edm hork\u00fdm vzduchem nebo vyrovn\u00e1v\u00e1n\u00ed hork\u00fdm vzduchem. P\u0159i tomto procesu se na povrch desky plo\u0161n\u00fdch spoj\u016f nan\u00e1\u0161\u00ed roztaven\u00e1 p\u00e1jka (kter\u00e1 m\u016f\u017ee obsahovat olovo). Pot\u00e9 se p\u00e1jka vyrovn\u00e1 hork\u00fdm stla\u010den\u00fdm vzduchem. V\u00fdsledkem je povlak, kter\u00fd chr\u00e1n\u00ed m\u011b\u010f p\u0159ed oxidac\u00ed a zaji\u0161\u0165uje dobrou p\u00e1jitelnost.<\/div><div class=\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\">P\u0159i vyrovn\u00e1v\u00e1n\u00ed hork\u00fdm vzduchem se v m\u00edst\u011b spojen\u00ed p\u00e1jky a m\u011bdi vytvo\u0159\u00ed intermetalick\u00e1 slou\u010denina m\u011bdi a c\u00ednu. P\u0159i tomto procesu se deska plo\u0161n\u00fdch spoj\u016f pono\u0159\u00ed do roztaven\u00e9 p\u00e1jky. Vzduchov\u00e9 no\u017ee tekutou p\u00e1jku p\u0159ed jej\u00edm ochlazen\u00edm vyfouknou do roviny. Vzduchov\u00e9 no\u017ee sni\u017euj\u00ed tvar menisku p\u00e1jky na m\u011bdi a zabra\u0148uj\u00ed vzniku p\u00e1jec\u00edch m\u016fstk\u016f.<\/div><div class=\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\">Z\u00e1kladn\u00ed my\u0161lenka spo\u010d\u00edv\u00e1 v pou\u017eit\u00ed hork\u00e9ho vzduchu k odstran\u011bn\u00ed p\u0159ebyte\u010dn\u00e9 p\u00e1jky z povrchu desky a z otvor\u016f. Na plo\u0161k\u00e1ch, odkryt\u00fdch stop\u00e1ch a ploch\u00e1ch pro povrchovou mont\u00e1\u017e z\u016fstane rovnom\u011brn\u00e1 vrstva p\u00e1jky. HASL je jednou z b\u011b\u017en\u00fdch metod povrchov\u00e9 \u00fapravy desek plo\u0161n\u00fdch spoj\u016f.<\/div><h3 class=\"header-vfC6AV auto-hide-last-sibling-br\"><strong>V\u00fdhody<\/strong><\/h3><ol class=\"auto-hide-last-sibling-br\"><li><div class=\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\">Po HASL z\u016fst\u00e1v\u00e1 slo\u017een\u00ed p\u00e1jec\u00edho povlaku stejn\u00e9. Povlak je tedy konzistentn\u00ed a p\u00e1jitelnost je dobr\u00e1. Naproti tomu galvanick\u00e9 povlaky slitin olova a c\u00ednu mohou m\u011bnit slo\u017een\u00ed podle toho, jak se m\u011bn\u00ed pokovovac\u00ed l\u00e1ze\u0148. To znamen\u00e1, \u017ee pom\u011br olova a c\u00ednu v pokoven\u00fdch vrstv\u00e1ch se m\u016f\u017ee m\u011bnit.<\/div><\/li><li><div class=\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\">Infra\u010derven\u00e9 metody nebo metody p\u0159etaven\u00ed hork\u00fdm olejem pln\u011b nechr\u00e1n\u00ed bo\u010dn\u00ed hrany stop. HASL pokr\u00fdv\u00e1 a zcela zakr\u00fdv\u00e1 bo\u010dn\u00ed hrany stop. T\u00edm se zabr\u00e1n\u00ed korozi a p\u0159eru\u0161en\u00ed stop na desce plo\u0161n\u00fdch spoj\u016f. To znamen\u00e1, \u017ee desky vydr\u017e\u00ed d\u00e9le p\u0159i skladov\u00e1n\u00ed a pou\u017e\u00edv\u00e1n\u00ed a hotov\u00e9 elektronick\u00e9 v\u00fdrobky jsou spolehliv\u011bj\u0161\u00ed. HASL se dnes \u0161iroce pou\u017e\u00edv\u00e1 v procesech SMT.<\/div><\/li><li><div class=\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\">Zm\u011bnou \u00fahlu vzduchov\u00e9ho no\u017ee, rychlosti zved\u00e1n\u00ed desky a dal\u0161\u00edch nastaven\u00ed procesu m\u016f\u017eete regulovat tlou\u0161\u0165ku povlaku. Snadno tak dos\u00e1hnete po\u017eadovan\u00e9 tlou\u0161\u0165ky vrstvy p\u00e1jky. Je flexibiln\u011bj\u0161\u00ed ne\u017e n\u011bkter\u00e9 metody taven\u00ed za tepla.<\/div><\/li><li><div class=\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\">Pokud jsou desky vyrobeny pokoven\u00edm a lept\u00e1n\u00edm, m\u016f\u017ee p\u00e1jen\u00ed vlnou zp\u016fsobit p\u0159emost\u011bn\u00ed, proto\u017ee slitina olova a c\u00ednu se usazuje na stop\u00e1ch. Tok slitiny m\u016f\u017ee tak\u00e9 zvr\u00e1snit nebo zvednout p\u00e1jec\u00ed masku. Desky vyroben\u00e9 pomoc\u00ed HASL nemaj\u00ed na stop\u00e1ch p\u00e1jku, tak\u017ee p\u0159emost\u011bn\u00ed a zvr\u00e1sn\u011bn\u00ed nebo odlepen\u00ed masky jsou vylou\u010deny.<\/div><\/li><\/ol><h3 class=\"header-vfC6AV auto-hide-last-sibling-br\"><strong>Nev\u00fdhody<\/strong><\/h3><ol class=\"auto-hide-last-sibling-br\"><li><div class=\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\">Zne\u010di\u0161t\u011bn\u00ed p\u00e1jec\u00edho hrnce m\u011bd\u00ed. P\u0159i HASL se deska pono\u0159\u00ed na n\u011bkolik sekund do p\u00e1jec\u00edho hrnce. To zp\u016fsob\u00ed, \u017ee se m\u011b\u010f rozpust\u00ed v p\u00e1jce. Kdy\u017e m\u011b\u010f v p\u00e1jce dos\u00e1hne hodnoty p\u0159ibli\u017en\u011b 0,29% nebo vy\u0161\u0161\u00ed, p\u00e1jka ztrat\u00ed \u010d\u00e1st sv\u00e9 tekutosti. Povlak p\u00e1jky se st\u00e1v\u00e1 polom\u00e1\u010div\u00fdm a p\u00e1jec\u00ed schopnost desky kles\u00e1.<\/div><\/li><li><div class=\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\">Olovo je t\u011b\u017ek\u00fd kov a je \u0161kodliv\u00e9 pro lidi i \u017eivotn\u00ed prost\u0159ed\u00ed. Mnoho p\u00e1jen\u00fdch povlak\u016f s olovem bylo b\u011b\u017en\u00fdch. Nyn\u00ed byly vyvinuty a prod\u00e1vaj\u00ed se bezolovnat\u00e9 p\u00e1jky, kter\u00e9 ve v\u00fdrob\u011b nahrazuj\u00ed slitiny olova a c\u00ednu.<\/div><\/li><li><div class=\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\">Vysok\u00e9 v\u00fdrobn\u00ed n\u00e1klady. Dobr\u00fd dov\u00e1\u017een\u00fd stroj HASL m\u016f\u017ee st\u00e1t v\u00edce ne\u017e t\u0159i sta tis\u00edc americk\u00fdch dolar\u016f. Proto jsou v\u00fdrobn\u00ed n\u00e1klady na HASL vy\u0161\u0161\u00ed ne\u017e u n\u011bkter\u00fdch metod taven\u00ed za tepla.<\/div><\/li><li><div class=\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\">Velk\u00fd tepeln\u00fd \u0161ok v HASL. Velk\u00e1 tepeln\u00e1 zm\u011bna m\u016f\u017ee zp\u016fsobit deformaci nebo prohnut\u00ed substr\u00e1tu PCB a deska se m\u016f\u017ee zvednout. To znamen\u00e1, \u017ee HASL zp\u016fsobuje v\u011bt\u0161\u00ed tepeln\u00e9 nam\u00e1h\u00e1n\u00ed.<\/div><\/li><\/ol><h2 class=\"header-vfC6AV auto-hide-last-sibling-br\"><strong>\u0158\u00edzen\u00ed a volba parametr\u016f procesu HASL<\/strong><\/h2><div class=\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\">Mezi hlavn\u00ed parametry procesu HASL pat\u0159\u00ed teplota p\u00e1jky, doba ponoru, tlak vzduchov\u00e9ho no\u017ee, teplota vzduchov\u00e9ho no\u017ee, \u00fahel vzduchov\u00e9ho no\u017ee, vzd\u00e1lenost mezi vzduchov\u00fdmi no\u017ei a rychlost stoup\u00e1n\u00ed desky. N\u00ed\u017ee je vysv\u011btleno, jak tyto parametry ovliv\u0148uj\u00ed kvalitu desky.<\/div><ol class=\"auto-hide-last-sibling-br\"><li><div class=\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\"><strong>Doba ponoru (doba pono\u0159en\u00ed):<\/strong><br class=\"container-utlnW2 wrapper-d0Cc1k undefined\" \/>Doba ponoru m\u00e1 velk\u00fd vliv na kvalitu p\u00e1jen\u00ed. P\u0159i pono\u0159ov\u00e1n\u00ed tvo\u0159\u00ed z\u00e1kladn\u00ed m\u011b\u010f a c\u00edn v p\u00e1jce intermetalickou slou\u010deninu (IMC). Sou\u010dasn\u011b se na stop\u00e1ch vytvo\u0159\u00ed p\u00e1jec\u00ed vrstva. Cel\u00fd tento proces obvykle pot\u0159ebuje 2-4 sekundy, aby se vytvo\u0159ila kvalitn\u00ed IMC. \u010c\u00edm del\u0161\u00ed doba, t\u00edm siln\u011bj\u0161\u00ed p\u00e1jka. Pokud v\u0161ak nam\u00e1\u010d\u00edte p\u0159\u00edli\u0161 dlouho, m\u016f\u017ee doj\u00edt k delaminaci materi\u00e1lu j\u00e1dra desky a na p\u00e1jec\u00ed masce se mohou vytvo\u0159it puch\u00fd\u0159e. Pokud je \u010das p\u0159\u00edli\u0161 kr\u00e1tk\u00fd, dojde k \u010d\u00e1ste\u010dn\u00e9mu sm\u00e1\u010den\u00ed. To zp\u016fsobuje lok\u00e1ln\u00ed zb\u011blen\u00ed p\u00e1jec\u00edho povrchu a m\u016f\u017ee zp\u016fsobit, \u017ee p\u00e1jec\u00ed povrch bude drsn\u00fd.<\/div><\/li><li><div class=\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\"><strong>Teplota p\u00e1jec\u00edho hrnce:<\/strong><br class=\"container-utlnW2 wrapper-d0Cc1k undefined\" \/>Pro p\u00e1jen\u00ed desek plo\u0161n\u00fdch spoj\u016f a sou\u010d\u00e1stek se b\u011b\u017en\u011b pou\u017e\u00edv\u00e1 slitina olova 37 \/ c\u00ednu 63, jej\u00ed\u017e bod t\u00e1n\u00ed je 183 \u00b0C. Pokud je teplota p\u00e1jky mezi 183 \u00b0C a 221 \u00b0C, je jej\u00ed schopnost vytv\u00e1\u0159et intermetalick\u00e9 slou\u010deniny s m\u011bd\u00ed mal\u00e1. P\u0159i teplot\u011b 221 \u00b0C se p\u00e1jka dost\u00e1v\u00e1 do oblasti sm\u00e1\u010den\u00ed. Rozsah sm\u00e1\u010den\u00ed je 221 \u00b0C a\u017e 293 \u00b0C. Proto\u017ee vysok\u00e1 teplota m\u016f\u017ee po\u0161kodit desku, m\u011bli byste zvolit ni\u017e\u0161\u00ed teplotu p\u00e1jky v rozsahu sm\u00e1\u010den\u00ed. Teoretick\u00e1 pr\u00e1ce uv\u00e1d\u00ed jako nejlep\u0161\u00ed teplotu p\u00e1jen\u00ed 232 \u00b0C. V praxi se jako nejlep\u0161\u00ed teplota \u010dasto pou\u017e\u00edv\u00e1 p\u0159ibli\u017en\u011b 250 \u00b0C.<\/div><\/li><li><div class=\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\"><strong>Tlak vzduchov\u00e9ho no\u017ee:<\/strong><br class=\"container-utlnW2 wrapper-d0Cc1k undefined\" \/>Po pono\u0159en\u00ed z\u016fstane na desce hodn\u011b p\u00e1jky a v\u011bt\u0161ina pokoven\u00fdch pr\u016fchoz\u00edch otvor\u016f se zapln\u00ed p\u00e1jkou. Vzduchov\u00e9 no\u017ee slou\u017e\u00ed k odfouknut\u00ed p\u0159ebyte\u010dn\u00e9 p\u00e1jky a k otev\u0159en\u00ed pokoven\u00fdch pr\u016fchoz\u00edch otvor\u016f, ani\u017e by byly pr\u016fm\u011bry otvor\u016f p\u0159\u00edli\u0161 mal\u00e9. Energii k tomu dod\u00e1v\u00e1 tlak a rychlost vzduchu. \u010c\u00edm vy\u0161\u0161\u00ed je tlak a rychlost vzduchu, t\u00edm ten\u010d\u00ed je povlak p\u00e1jky. Tlak vzduchov\u00e9ho no\u017ee je tedy jedn\u00edm z nejd\u016fle\u017eit\u011bj\u0161\u00edch parametr\u016f HASL. Obvykle je tlak vzduchu na no\u017ei 0,3-0,5 MPa.<\/div><div class=\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\">Tlak p\u0159ed a za no\u017eem je obvykle nastaven tak, \u017ee p\u0159edn\u00ed \u010d\u00e1st je vy\u0161\u0161\u00ed a zadn\u00ed ni\u017e\u0161\u00ed. Rozd\u00edl tlak\u016f je p\u0159ibli\u017en\u011b 0,05 MPa. P\u0159\u00edtlak vp\u0159edu a vzadu m\u016f\u017eete nastavit na z\u00e1klad\u011b vzor\u016f podlo\u017eek na desce, aby oblasti integrovan\u00fdch obvod\u016f z\u016fstaly rovn\u00e9 a aby se zabr\u00e1nilo vy\u010dn\u00edv\u00e1n\u00ed sou\u010d\u00e1stek SMT. P\u0159esn\u00e9 doporu\u010den\u00e9 hodnoty najdete v n\u00e1vodu ke stroji.<\/div><\/li><li><div class=\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\"><strong>Teplota vzduchov\u00e9ho no\u017ee:<\/strong><br class=\"container-utlnW2 wrapper-d0Cc1k undefined\" \/>Hork\u00fd vzduch ze vzduchov\u00e9ho no\u017ee p\u0159\u00edli\u0161 nem\u011bn\u00ed teplotu desky a nem\u00e1 velk\u00fd vliv na tlak vzduchu. Zv\u00fd\u0161en\u00ed vnit\u0159n\u00ed teploty vzduchov\u00e9ho no\u017ee v\u0161ak napom\u00e1h\u00e1 rozp\u00edn\u00e1n\u00ed vzduchu. P\u0159i stejn\u00e9m tlaku tedy vy\u0161\u0161\u00ed teplota vzduchu poskytuje v\u011bt\u0161\u00ed objem vzduchu a vy\u0161\u0161\u00ed rychlost. T\u00edm se zvy\u0161uje vyrovn\u00e1vac\u00ed s\u00edla. Teplota vzduchov\u00e9ho no\u017ee tak\u00e9 ovliv\u0148uje vzhled p\u00e1jky po vyrovn\u00e1n\u00ed. Kdy\u017e je teplota vzduchu a no\u017ee ni\u017e\u0161\u00ed ne\u017e 93 \u00b0C, vrstva vypad\u00e1 matn\u011b. Se zvy\u0161uj\u00edc\u00ed se teplotou vzduchu se matn\u00fd vzhled sni\u017euje. P\u0159i 176 \u00b0C matn\u00fd vzhled zcela zmiz\u00ed. Teplota vzduchov\u00e9ho no\u017ee by tedy nem\u011bla b\u00fdt ni\u017e\u0161\u00ed ne\u017e 176 \u00b0C. Abyste z\u00edskali dob\u0159e plochou p\u00e1jku, teplota vzduchov\u00e9ho no\u017ee se \u010dasto nastavuje mezi 300 \u00b0C a 400 \u00b0C.<\/div><\/li><li><div class=\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\"><strong>Vzd\u00e1lenost mezi vzduchov\u00fdmi no\u017ei:<\/strong><br class=\"container-utlnW2 wrapper-d0Cc1k undefined\" \/>Kdy\u017e hork\u00fd vzduch opou\u0161t\u00ed trysku vzduchov\u00e9ho no\u017ee, jeho rychlost se zpomaluje. Zpomalen\u00ed se zvy\u0161uje se \u010dtvercem vzd\u00e1lenosti mezi no\u017ei. \u010c\u00edm v\u011bt\u0161\u00ed je tedy mezera, t\u00edm ni\u017e\u0161\u00ed je rychlost vzduchu a t\u00edm slab\u0161\u00ed je vyrovn\u00e1vac\u00ed s\u00edla. Typick\u00e1 vzd\u00e1lenost mezi tryskami vzduchov\u00fdch no\u017e\u016f je 0,95-1,25 cm. Rozte\u010d trysek nesm\u00ed b\u00fdt p\u0159\u00edli\u0161 mal\u00e1, jinak m\u016f\u017ee t\u0159en\u00ed vzduchu po\u0161kodit povrch desky. Rozte\u010d mezi horn\u00edmi a doln\u00edmi vzduchov\u00fdmi no\u017ei se obvykle udr\u017euje kolem 4 mm. P\u0159\u00edli\u0161 velk\u00e1 mezera m\u016f\u017ee zp\u016fsobit rozst\u0159\u00edknut\u00ed p\u00e1jky.<\/div><\/li><li><div class=\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\"><strong>\u00dahel vzduchov\u00e9ho no\u017ee:<\/strong><br class=\"container-utlnW2 wrapper-d0Cc1k undefined\" \/>Tlou\u0161\u0165ku p\u00e1jec\u00edho povlaku ovliv\u0148uje \u00fahel, pod kter\u00fdm je n\u016f\u017e naklon\u011bn. Pokud je \u00fahel \u0161patn\u00fd, mohou m\u00edt ob\u011b strany desky r\u016fznou tlou\u0161\u0165ku p\u00e1jky. \u0160patn\u00fd \u00fahel m\u016f\u017ee tak\u00e9 zp\u016fsobit rozst\u0159ikov\u00e1n\u00ed roztaven\u00e9 p\u00e1jky a hluk. Obvykle se p\u0159edn\u00ed a zadn\u00ed vzduchov\u00e9 no\u017ee nakl\u00e1n\u011bj\u00ed asi o 4 stupn\u011b dol\u016f. Pro konkr\u00e9tn\u00ed tvary desek a rozlo\u017een\u00ed podlo\u017eek je t\u0159eba je m\u00edrn\u011b upravit.<\/div><\/li><li><div class=\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\"><strong>Rychlost zdvihu desky (rychlost dopravn\u00edku nebo v\u00fdtahu):<\/strong><br class=\"container-utlnW2 wrapper-d0Cc1k undefined\" \/>Dal\u0161\u00ed prom\u011bnnou je rychlost, kterou se deska pohybuje ve vzduchov\u00fdch no\u017e\u00edch. Rychlost ovliv\u0148uje tlou\u0161\u0165ku povlaku. Pomal\u00e1 rychlost znamen\u00e1, \u017ee na desku dopad\u00e1 v\u00edce vzduchu, tak\u017ee povlak je ten\u010d\u00ed. Vysok\u00e1 rychlost znamen\u00e1, \u017ee povlak je siln\u011bj\u0161\u00ed a m\u016f\u017ee dokonce zablokovat otvory.<\/div><\/li><li><div class=\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\"><strong>Teplota a \u010das p\u0159edeh\u0159\u00e1t\u00ed:<\/strong><br class=\"container-utlnW2 wrapper-d0Cc1k undefined\" \/>P\u0159edeh\u0159\u00e1t\u00ed m\u00e1 za c\u00edl aktivovat tok a sn\u00ed\u017eit tepeln\u00fd \u0161ok. Typick\u00e1 teplota p\u0159edeh\u0159evu je 343 \u00b0C. P\u0159i 15sekundov\u00e9m p\u0159edeh\u0159evu m\u016f\u017ee povrch desky dos\u00e1hnout p\u0159ibli\u017en\u011b 80 \u00b0C. N\u011bkter\u00e9 linky HASL krok p\u0159edeh\u0159evu nepou\u017e\u00edvaj\u00ed.<\/div><\/li><\/ol><div class=\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\">N\u00ed\u017ee je uvedena p\u0159ehledn\u00e1 tabulka, kter\u00e1 shrnuje kl\u00ed\u010dov\u00e9 parametry procesu HASL, doporu\u010den\u00e9 rozsahy a kr\u00e1tk\u00e9 pozn\u00e1mky. Pou\u017eijte ji jako rychlou referenci p\u0159i nastavov\u00e1n\u00ed nebo testov\u00e1n\u00ed linky.<\/div><h4 class=\"header-vfC6AV auto-hide-last-sibling-br\"><strong>Parametry procesu - tabulka s doporu\u010den\u00fdmi rozsahy<\/strong><\/h4><table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"100\" data-end=\"916\"><thead data-start=\"100\" data-end=\"158\"><tr data-start=\"100\" data-end=\"158\"><th data-start=\"100\" data-end=\"122\" data-col-size=\"sm\">Parametr<\/th><th data-start=\"122\" data-end=\"142\" data-col-size=\"sm\">Doporu\u010den\u00fd rozsah<\/th><th data-start=\"142\" data-end=\"150\" data-col-size=\"sm\">Jednotka<\/th><th data-start=\"150\" data-end=\"158\" data-col-size=\"md\">Pozn\u00e1mka<\/th><\/tr><\/thead><tbody data-start=\"179\" data-end=\"916\"><tr data-start=\"179\" data-end=\"265\"><td data-start=\"179\" data-end=\"208\" data-col-size=\"sm\"><strong data-start=\"181\" data-end=\"207\">Teplota p\u00e1jec\u00edho hrnce (olovo)<\/strong><\/td><td data-start=\"208\" data-end=\"218\" data-col-size=\"sm\">245-260<\/td><td data-start=\"218\" data-end=\"223\" data-col-size=\"sm\">\u00b0C<\/td><td data-start=\"223\" data-end=\"265\" data-col-size=\"md\">B\u011b\u017en\u00e1 teplota 250 \u00b0C. P\u0159\u00edli\u0161 vysok\u00e1 teplota m\u016f\u017ee zp\u016fsobit deformaci desky.<\/td><\/tr><tr data-start=\"266\" data-end=\"354\"><td data-start=\"266\" data-end=\"300\" data-col-size=\"sm\"><strong data-start=\"268\" data-end=\"299\">Teplota p\u00e1jec\u00edho hrnce (bezolovnat\u00fd)<\/strong><\/td><td data-start=\"300\" data-end=\"310\" data-col-size=\"sm\">280-300<\/td><td data-start=\"310\" data-end=\"315\" data-col-size=\"sm\">\u00b0C<\/td><td data-start=\"315\" data-end=\"354\" data-col-size=\"md\">B\u011b\u017en\u00e1 teplota 290 \u00b0C. Vy\u0161\u0161\u00ed teplota t\u00e1n\u00ed.<\/td><\/tr><tr data-start=\"355\" data-end=\"436\"><td data-start=\"355\" data-end=\"376\" data-col-size=\"sm\"><strong data-start=\"357\" data-end=\"375\">Doba pono\u0159en\u00ed<\/strong><\/td><td data-start=\"376\" data-end=\"382\" data-col-size=\"sm\">2-4<\/td><td data-start=\"382\" data-end=\"386\" data-col-size=\"sm\">s<\/td><td data-start=\"386\" data-end=\"436\" data-col-size=\"md\">P\u0159\u00edli\u0161 dlouh\u00e9 \u2192 bubl\u00e1n\u00ed. P\u0159\u00edli\u0161 kr\u00e1tk\u00e1 \u2192 \u0161patn\u00e9 sm\u00e1\u010den\u00ed.<\/td><\/tr><tr data-start=\"437\" data-end=\"544\"><td data-start=\"437\" data-end=\"462\" data-col-size=\"sm\"><strong data-start=\"439\" data-end=\"461\">Tlak vzduchov\u00e9ho no\u017ee<\/strong><\/td><td data-start=\"462\" data-end=\"474\" data-col-size=\"sm\">0.30-0.50<\/td><td data-start=\"474\" data-end=\"480\" data-col-size=\"sm\">MPa<\/td><td data-start=\"480\" data-end=\"544\" data-col-size=\"md\">Vy\u0161\u0161\u00ed \u2192 ten\u010d\u00ed povlak. \u010celo m\u00edrn\u011b vy\u0161\u0161\u00ed (\u22480,05 MPa).<\/td><\/tr><tr data-start=\"545\" data-end=\"643\"><td data-start=\"545\" data-end=\"566\" data-col-size=\"sm\"><strong data-start=\"547\" data-end=\"565\">Teplota vzduchov\u00e9ho no\u017ee<\/strong><\/td><td data-start=\"566\" data-end=\"589\" data-col-size=\"sm\">\u2265176; b\u011b\u017en\u00e9 300-400<\/td><td data-start=\"589\" data-end=\"594\" data-col-size=\"sm\">\u00b0C<\/td><td data-start=\"594\" data-end=\"643\" data-col-size=\"md\">Vy\u0161\u0161\u00ed \u2192 rychlej\u0161\u00ed proud\u011bn\u00ed vzduchu a lep\u0161\u00ed vyrovn\u00e1v\u00e1n\u00ed.<\/td><\/tr><tr data-start=\"644\" data-end=\"713\"><td data-start=\"644\" data-end=\"664\" data-col-size=\"sm\"><strong data-start=\"646\" data-end=\"663\">Mezera mezi vzduchov\u00fdmi no\u017ei<\/strong><\/td><td data-start=\"664\" data-end=\"676\" data-col-size=\"sm\">0.95-1.25<\/td><td data-start=\"676\" data-end=\"681\" data-col-size=\"sm\">cm<\/td><td data-start=\"681\" data-end=\"713\" data-col-size=\"md\">V\u011bt\u0161\u00ed mezera \u2192 slab\u0161\u00ed proud\u011bn\u00ed vzduchu.<\/td><\/tr><tr data-start=\"714\" data-end=\"789\"><td data-start=\"714\" data-end=\"736\" data-col-size=\"sm\"><strong data-start=\"716\" data-end=\"735\">\u00dahel vzduchov\u00e9ho no\u017ee<\/strong><\/td><td data-start=\"736\" data-end=\"756\" data-col-size=\"sm\">2\u00b0-6\u00b0 (b\u011b\u017en\u00e9 4\u00b0)<\/td><td data-start=\"756\" data-end=\"760\" data-col-size=\"sm\">\u00b0<\/td><td data-start=\"760\" data-end=\"789\" data-col-size=\"md\">Ovliv\u0148uje rovnom\u011brnost povlaku.<\/td><\/tr><tr data-start=\"790\" data-end=\"858\"><td data-start=\"790\" data-end=\"809\" data-col-size=\"sm\"><strong data-start=\"792\" data-end=\"808\">Teplota p\u0159edeh\u0159\u00e1t\u00ed<\/strong><\/td><td data-start=\"809\" data-end=\"819\" data-col-size=\"sm\">120-180<\/td><td data-start=\"819\" data-end=\"824\" data-col-size=\"sm\">\u00b0C<\/td><td data-start=\"824\" data-end=\"858\" data-col-size=\"md\">C\u00edlov\u00e1 teplota povrchu desky 60-100 \u00b0C.<\/td><\/tr><tr data-start=\"859\" data-end=\"916\"><td data-start=\"859\" data-end=\"878\" data-col-size=\"sm\"><strong data-start=\"861\" data-end=\"877\">Doba p\u0159edeh\u0159evu<\/strong><\/td><td data-start=\"878\" data-end=\"886\" data-col-size=\"sm\">10-30<\/td><td data-start=\"886\" data-end=\"890\" data-col-size=\"sm\">s<\/td><td data-start=\"890\" data-end=\"916\" data-col-size=\"md\">Sni\u017euje tepeln\u00fd \u0161ok.<\/td><\/tr><\/tbody><\/table><div class=\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\">Tyto rozsahy pou\u017eijte jako v\u00fdchoz\u00ed body. Pot\u00e9 spus\u0165te testovac\u00ed desky a vyla\u010fte jeden parametr po druh\u00e9m. Zkontrolujte, zda nen\u00ed povrch matn\u00fd, zda nedoch\u00e1z\u00ed k p\u0159emost\u011bn\u00ed nebo delaminaci. Pokud zjist\u00edte probl\u00e9m, zm\u011b\u0148te jednu polo\u017eku, prove\u010fte test znovu a v\u00fdsledek zaznamenejte.<\/div><h3 class=\"header-vfC6AV auto-hide-last-sibling-br\"><strong>Olovnat\u00fd HASL vs. bezolovnat\u00fd HASL<\/strong><\/h3><div class=\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\">Mnoho lid\u00ed v\u00ed o HASL, ale mo\u017en\u00e1 nev\u011bd\u00ed, \u017ee p\u00e1jky se vyr\u00e1b\u011bj\u00ed v olovnat\u00fdch a bezolovnat\u00fdch typech. S v\u00fdvojem elektroniky se technologie plo\u0161n\u00fdch spoj\u016f neust\u00e1le zdokonaluje. Mezi b\u011b\u017en\u00e9 povrchov\u00e9 \u00fapravy pat\u0159\u00ed HASL, ponorn\u00e9 zlato, galvanick\u00e9 zlato, OSP atd. HASL se vyr\u00e1b\u00ed jako olovnat\u00e9 a bezolovnat\u00e9. Zde je rozd\u00edl:<\/div><ol class=\"auto-hide-last-sibling-br\"><li><div class=\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\">Bezolovnat\u00fd HASL je \u0161etrn\u011bj\u0161\u00ed k \u017eivotn\u00edmu prost\u0159ed\u00ed, proto\u017ee neobsahuje olovo. Jeho bod t\u00e1n\u00ed se pohybuje kolem 218 \u00b0C. U bezolovnat\u00e9ho HASL je t\u0159eba kontrolovat teplotu p\u00e1jec\u00edho hrnce na p\u0159ibli\u017en\u011b 280-300 \u00b0C; teplota p\u00e1jen\u00ed vlnou by m\u011bla b\u00fdt p\u0159ibli\u017en\u011b 260 \u00b0C; teplota p\u0159etaven\u00ed je p\u0159ibli\u017en\u011b 260-270 \u00b0C.<\/div><\/li><li><div class=\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\">Olovnat\u00fd materi\u00e1l HASL nen\u00ed \u0161etrn\u00fd k \u017eivotn\u00edmu prost\u0159ed\u00ed. Obsahuje olovo a jeho bod t\u00e1n\u00ed je p\u0159ibli\u017en\u011b 183 \u00b0C. U olovnat\u00e9ho HASL by m\u011bla b\u00fdt teplota p\u00e1jec\u00edho hrnce kontrolov\u00e1na na p\u0159ibli\u017en\u011b 245-260 \u00b0C; teplota p\u00e1jen\u00ed vlnou by m\u011bla b\u00fdt p\u0159ibli\u017en\u011b 250 \u00b0C; teplota p\u0159etaven\u00ed p\u0159ibli\u017en\u011b 245-255 \u00b0C.<\/div><\/li><li><div class=\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\">Pod\u00edvejte se na p\u00e1jec\u00ed povrch: olovnat\u00fd HASL vypad\u00e1 sv\u011btlej\u0161\u00ed, bezolovnat\u00fd HASL vypad\u00e1 matn\u011bji. Sm\u00e1\u010den\u00ed bezolovnat\u00e9ho materi\u00e1lu je o n\u011bco hor\u0161\u00ed ne\u017e sm\u00e1\u010den\u00ed olovnat\u00e9ho.<\/div><\/li><li><div class=\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\">Pravidla pro obsah olova: bezolovnat\u00e9 p\u00e1jky maj\u00ed olovo pod 0,5%, zat\u00edmco olovnat\u00e9 p\u00e1jky maj\u00ed olovo a\u017e do 37%.<\/div><\/li><li><div class=\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\">Olovo pom\u00e1h\u00e1 zlep\u0161it p\u00e1jen\u00ed a aktivitu p\u0159i p\u00e1jen\u00ed. P\u00e1jec\u00ed dr\u00e1t s olovem se ve srovn\u00e1n\u00ed s bezolovnat\u00fdm dr\u00e1tem snadn\u011bji pou\u017e\u00edv\u00e1. Olovo je v\u0161ak toxick\u00e9 a dlouhodob\u00e1 expozice je pro \u010dlov\u011bka \u0161kodliv\u00e1. Bezolovnat\u00e1 p\u00e1jka m\u00e1 vy\u0161\u0161\u00ed bod t\u00e1n\u00ed, tak\u017ee p\u00e1jec\u00ed spoje mohou b\u00fdt pevn\u011bj\u0161\u00ed.<\/div><\/li><li><div class=\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\">Pokud jde o cenu povrchov\u00e9 \u00fapravy PCB, olovnat\u00fd HASL a bezolovnat\u00fd HASL obvykle stoj\u00ed stejn\u011b. Ve v\u011bt\u0161in\u011b p\u0159\u00edpad\u016f nen\u00ed \u017e\u00e1dn\u00fd cenov\u00fd rozd\u00edl.<\/div><\/li><\/ol><h3 class=\"header-vfC6AV auto-hide-last-sibling-br\"><strong>Jak zjistit, zda je deska plo\u0161n\u00fdch spoj\u016f opat\u0159ena olovnat\u00fdm nebo bezolovnat\u00fdm HASL?<\/strong><\/h3><ol class=\"auto-hide-last-sibling-br\"><li><div class=\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\">Pod\u00edvejte se na p\u00e1jec\u00ed povrch. Olovnat\u00e1 p\u00e1jka vypad\u00e1 jasn\u011b a leskle. Bezolovnat\u00e1 p\u00e1jka (slitiny SAC) vypad\u00e1 matn\u011bji. Sm\u00e1\u010den\u00ed bezolovnat\u00e9 p\u00e1jky je o n\u011bco hor\u0161\u00ed ne\u017e olovnat\u00e9.<\/div><\/li><li><div class=\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\">Olovnat\u00e1 p\u00e1jka je pro lidi \u0161kodliv\u00e1. Bezolovnat\u00e1 p\u00e1jka je bezpe\u010dn\u011bj\u0161\u00ed. Eutektick\u00e1 teplota z\u00e1vis\u00ed na bezolovnat\u00e9 slitin\u011b. Nap\u0159\u00edklad eutektick\u00e1 teplota SAC (SnAgCu) se bl\u00ed\u017e\u00ed 217 \u00b0C a teplota p\u00e1jen\u00ed by m\u011bla b\u00fdt eutektick\u00e1 plus 30-50 \u00b0C. U eutektik s olovem (Sn63Pb37) je eutektick\u00e1 teplota 183 \u00b0C.<\/div><\/li><li><div class=\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\">Obsah olova: bezolovnat\u00e9 p\u00e1jky maj\u00ed olovo \u2264 0,5%, olovnat\u00e9 mohou m\u00edt asi 37% olova.<\/div><\/li><li><div class=\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\">Olovo zvy\u0161uje aktivitu p\u00e1jky, tak\u017ee olovnat\u00e1 p\u00e1jka se p\u0159i p\u00e1jen\u00ed pou\u017e\u00edv\u00e1 snadn\u011bji. Olovo je v\u0161ak toxick\u00e9 a zdrav\u00ed \u0161kodliv\u00e9. Tak\u00e9 bezolovnat\u00e1 p\u00e1jka m\u00e1 vy\u0161\u0161\u00ed bod t\u00e1n\u00ed, d\u00edky \u010demu\u017e mohou b\u00fdt p\u00e1jec\u00ed spoje mechanicky pevn\u011bj\u0161\u00ed.<\/div><\/li><\/ol><h2 class=\"header-vfC6AV auto-hide-last-sibling-br\"><strong>Souhrn<\/strong><\/h2><div class=\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\">HASL je b\u011b\u017en\u00e1 a osv\u011bd\u010den\u00e1 povrchov\u00e1 \u00faprava desek plo\u0161n\u00fdch spoj\u016f. Chr\u00e1n\u00ed m\u011b\u010f a zaji\u0161\u0165uje dobrou p\u00e1jitelnost. HASL m\u00e1 sv\u00e9 v\u00fdhody i nev\u00fdhody. Zakr\u00fdv\u00e1 hrany stop a pom\u00e1h\u00e1 spolehlivosti, ale m\u016f\u017ee zvy\u0161ovat tepeln\u00e9 nam\u00e1h\u00e1n\u00ed a n\u00e1klady. Kl\u00ed\u010dov\u00e1 nastaven\u00ed jsou teplota p\u00e1jen\u00ed, doba ponoru, tlak vzduchov\u00e9ho no\u017ee, teplota vzduchu, \u00fahel no\u017ee a rychlost desky. Jako vod\u00edtko pou\u017eijte tabulku. Testujte a vyla\u010fte pro ka\u017ed\u00fd typ desky. Pokud to vy\u017eaduj\u00ed pravidla nebo bezpe\u010dnost, pou\u017e\u00edvejte bezolovnat\u00e9 slitiny.<\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-ow9bnww elementor-section-content-top elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"ow9bnww\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t\t<div class=\"elementor-background-overlay\"><\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-no\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-7882748\" data-id=\"7882748\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-9fc6712 elementor-widget elementor-widget-heading\" data-id=\"9fc6712\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">\u010casto kladen\u00e9 ot\u00e1zky<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-631b990 elementor-widget elementor-widget-accordion\" data-id=\"631b990\" data-element_type=\"widget\" data-widget_type=\"accordion.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-accordion\">\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-1031\" class=\"elementor-tab-title\" data-tab=\"1\" role=\"button\" aria-controls=\"elementor-tab-content-1031\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-right\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><svg class=\"e-font-icon-svg e-fas-plus-circle\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zm144 276c0 6.6-5.4 12-12 12h-92v92c0 6.6-5.4 12-12 12h-56c-6.6 0-12-5.4-12-12v-92h-92c-6.6 0-12-5.4-12-12v-56c0-6.6 5.4-12 12-12h92v-92c0-6.6 5.4-12 12-12h56c6.6 0 12 5.4 12 12v92h92c6.6 0 12 5.4 12 12v56z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><svg class=\"e-font-icon-svg e-fas-minus-circle\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zM124 296c-6.6 0-12-5.4-12-12v-56c0-6.6 5.4-12 12-12h264c6.6 0 12 5.4 12 12v56c0 6.6-5.4 12-12 12H124z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Pro\u010d si vybrat HASL pro desky plo\u0161n\u00fdch spoj\u016f?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-1031\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"1\" role=\"region\" aria-labelledby=\"elementor-tab-title-1031\"><p>HASL poskytuje vynikaj\u00edc\u00ed p\u00e1jec\u00ed vlastnosti, sn\u00e1\u0161\u00ed v\u00edce tepeln\u00fdch cykl\u016f a je jednou z cenov\u011b nejefektivn\u011bj\u0161\u00edch povrchov\u00fdch \u00faprav pro standardn\u00ed mont\u00e1\u017e SMT a pr\u016fchoz\u00ed mont\u00e1\u017e.<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-1032\" class=\"elementor-tab-title\" data-tab=\"2\" role=\"button\" aria-controls=\"elementor-tab-content-1032\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-right\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><svg class=\"e-font-icon-svg e-fas-plus-circle\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zm144 276c0 6.6-5.4 12-12 12h-92v92c0 6.6-5.4 12-12 12h-56c-6.6 0-12-5.4-12-12v-92h-92c-6.6 0-12-5.4-12-12v-56c0-6.6 5.4-12 12-12h92v-92c0-6.6 5.4-12 12-12h56c6.6 0 12 5.4 12 12v92h92c6.6 0 12 5.4 12 12v56z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><svg class=\"e-font-icon-svg e-fas-minus-circle\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zM124 296c-6.6 0-12-5.4-12-12v-56c0-6.6 5.4-12 12-12h264c6.6 0 12 5.4 12 12v56c0 6.6-5.4 12-12 12H124z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Jak\u00e9 jsou hlavn\u00ed nev\u00fdhody HASL?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-1032\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"2\" role=\"region\" aria-labelledby=\"elementor-tab-title-1032\"><p>HASL m\u016f\u017ee vytv\u00e1\u0159et nerovn\u00fd povrch (\u0161patn\u00e1 rovinnost) v porovn\u00e1n\u00ed s rovinn\u00fdmi povrchov\u00fdmi \u00fapravami, co\u017e je m\u00e9n\u011b ide\u00e1ln\u00ed pro sou\u010d\u00e1stky s velmi malou rozte\u010d\u00ed a n\u011bkter\u00e9 BGA.<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-1033\" class=\"elementor-tab-title\" data-tab=\"3\" role=\"button\" aria-controls=\"elementor-tab-content-1033\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-right\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><svg class=\"e-font-icon-svg e-fas-plus-circle\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zm144 276c0 6.6-5.4 12-12 12h-92v92c0 6.6-5.4 12-12 12h-56c-6.6 0-12-5.4-12-12v-92h-92c-6.6 0-12-5.4-12-12v-56c0-6.6 5.4-12 12-12h92v-92c0-6.6 5.4-12 12-12h56c6.6 0 12 5.4 12 12v92h92c6.6 0 12 5.4 12 12v56z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><svg class=\"e-font-icon-svg e-fas-minus-circle\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zM124 296c-6.6 0-12-5.4-12-12v-56c0-6.6 5.4-12 12-12h264c6.6 0 12 5.4 12 12v56c0 6.6-5.4 12-12 12H124z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Jak si HASL vede ve srovn\u00e1n\u00ed s ENIG?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-1033\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"3\" role=\"region\" aria-labelledby=\"elementor-tab-title-1033\"><p>HASL je levn\u011bj\u0161\u00ed a poskytuje robustn\u00ed p\u00e1jec\u00ed spoje, ale ENIG nab\u00edz\u00ed mnohem plo\u0161\u0161\u00ed a rovnom\u011brn\u011bj\u0161\u00ed povrch (lep\u0161\u00ed pro po\u017eadavky na jemnou rozte\u010d\/BGA a rovinn\u00e9 spoje). Vyberte si podle rozte\u010de sou\u010d\u00e1stek a pot\u0159eb konektor\u016f\/spojen\u00ed.<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-1034\" class=\"elementor-tab-title\" data-tab=\"4\" role=\"button\" aria-controls=\"elementor-tab-content-1034\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-right\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><svg class=\"e-font-icon-svg e-fas-plus-circle\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zm144 276c0 6.6-5.4 12-12 12h-92v92c0 6.6-5.4 12-12 12h-56c-6.6 0-12-5.4-12-12v-92h-92c-6.6 0-12-5.4-12-12v-56c0-6.6 5.4-12 12-12h92v-92c0-6.6 5.4-12 12-12h56c6.6 0 12 5.4 12 12v92h92c6.6 0 12 5.4 12 12v56z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><svg class=\"e-font-icon-svg e-fas-minus-circle\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zM124 296c-6.6 0-12-5.4-12-12v-56c0-6.6 5.4-12 12-12h264c6.6 0 12 5.4 12 12v56c0 6.6-5.4 12-12 12H124z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Je HASL vhodn\u00fd pro SMD a BGA s jemnou rozte\u010d\u00ed?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-1034\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"4\" role=\"region\" aria-labelledby=\"elementor-tab-title-1034\"><p>Obecn\u011b nen\u00ed prvn\u00ed volbou pro velmi jemn\u00e9 rozte\u010de (&lt;0,5 mm) nebo hust\u00e9 BGA kv\u016fli topografii povrchu; mnoho konstrukt\u00e9r\u016f d\u00e1v\u00e1 v t\u011bchto p\u0159\u00edpadech p\u0159ednost ENIG nebo jin\u00fdm rovinn\u00fdm povrchov\u00fdm \u00faprav\u00e1m.<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-1035\" class=\"elementor-tab-title\" data-tab=\"5\" role=\"button\" aria-controls=\"elementor-tab-content-1035\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-right\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><svg class=\"e-font-icon-svg e-fas-plus-circle\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zm144 276c0 6.6-5.4 12-12 12h-92v92c0 6.6-5.4 12-12 12h-56c-6.6 0-12-5.4-12-12v-92h-92c-6.6 0-12-5.4-12-12v-56c0-6.6 5.4-12 12-12h92v-92c0-6.6 5.4-12 12-12h56c6.6 0 12 5.4 12 12v92h92c6.6 0 12 5.4 12 12v56z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><svg class=\"e-font-icon-svg e-fas-minus-circle\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zM124 296c-6.6 0-12-5.4-12-12v-56c0-6.6 5.4-12 12-12h264c6.6 0 12 5.4 12 12v56c0 6.6-5.4 12-12 12H124z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Prodlu\u017euje HASL dobu p\u0159\u00edpravy nebo n\u00e1klady?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-1035\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"5\" role=\"region\" aria-labelledby=\"elementor-tab-title-1035\"><p>HASL je obvykle jednou z levn\u011bj\u0161\u00edch povrchov\u00fdch \u00faprav a rychle se aplikuje, ale bezolovnat\u00fd HASL m\u016f\u017ee vy\u017eadovat p\u0159\u00edsn\u011bj\u0161\u00ed kontrolu procesu a pon\u011bkud odli\u0161nou manipulaci - zeptejte se ve sv\u00e9 tov\u00e1rn\u011b na dopady na dobu realizace.<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-1036\" class=\"elementor-tab-title\" data-tab=\"6\" role=\"button\" aria-controls=\"elementor-tab-content-1036\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-right\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><svg class=\"e-font-icon-svg e-fas-plus-circle\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zm144 276c0 6.6-5.4 12-12 12h-92v92c0 6.6-5.4 12-12 12h-56c-6.6 0-12-5.4-12-12v-92h-92c-6.6 0-12-5.4-12-12v-56c0-6.6 5.4-12 12-12h92v-92c0-6.6 5.4-12 12-12h56c6.6 0 12 5.4 12 12v92h92c6.6 0 12 5.4 12 12v56z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><svg class=\"e-font-icon-svg e-fas-minus-circle\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zM124 296c-6.6 0-12-5.4-12-12v-56c0-6.6 5.4-12 12-12h264c6.6 0 12 5.4 12 12v56c0 6.6-5.4 12-12 12H124z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Co m\u00e1m uv\u00e9st do pozn\u00e1mek k v\u00fdrob\u011b, kdy\u017e \u017e\u00e1d\u00e1m o HASL?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-1036\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"6\" role=\"region\" aria-labelledby=\"elementor-tab-title-1036\"><p>Uve\u010fte, zda chcete bezolovnat\u00e9 (RoHS) nebo tradi\u010dn\u00ed SnPb HASL, jak\u00e9koliv speci\u00e1ln\u00ed po\u017eadavky na plochu podlo\u017eky nebo na jemnou rozte\u010d, a vy\u017e\u00e1dejte si zp\u011btnou vazbu od v\u00fdrobce DFM ohledn\u011b minim\u00e1ln\u00edch vzd\u00e1lenost\u00ed mezi podlo\u017ekami a limit\u016f rovinnosti.<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>What is HASL? HASL stands for Hot Air Solder Leveling. People also call it hot air solder leveling or hot [&hellip;]<\/p>","protected":false},"author":1,"featured_media":0,"parent":1898,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"no-sidebar","site-content-layout":"","ast-site-content-layout":"full-width-container","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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center\";s:15:\"background-size\";s:4:\"auto\";s:21:\"background-attachment\";s:6:\"scroll\";s:15:\"background-type\";s:0:\"\";s:16:\"background-media\";s:0:\"\";s:12:\"overlay-type\";s:0:\"\";s:13:\"overlay-color\";s:0:\"\";s:15:\"overlay-opacity\";s:0:\"\";s:16:\"overlay-gradient\";s:0:\"\";}}"],"footnotes":[""],"_elementor_edit_mode":["builder"],"_elementor_template_type":["wp-page"],"_elementor_data":["[{\"id\":\"65ddd57\",\"elType\":\"container\",\"settings\":{\"display_condition_list\":[{\"display_condition_login_status\":\"subscriber\",\"_id\":\"86e452b\"}]},\"elements\":[{\"id\":\"98f65cf\",\"elType\":\"widget\",\"settings\":{\"editor\":\"<h2 class=\\\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\\\"><strong>What is HASL?<\\\/strong><\\\/h2><div class=\\\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\\\">HASL stands for Hot Air Solder Leveling. People also call it hot air solder leveling or hot air leveling. In this process, molten solder (which can contain lead) is applied to the PCB surface. Then hot, compressed air is blown to level the solder. The result is a coating that protects copper from oxidation and gives good solderability.<\\\/div><div class=\\\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\\\">When you do hot air leveling, solder and copper form a copper-tin intermetallic compound where they join. For the process, the PCB is dipped into molten solder. The air knives blow the liquid solder flat before it cools. The air knives cut down the meniscus shape of solder on copper and stop solder bridges from forming.<\\\/div><div class=\\\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\\\">The basic idea is to use hot air to remove extra solder from the board surface and from holes. What stays is a uniform solder layer on pads, exposed traces, and surface mount lands. HASL is one of the common PCB surface finish methods.<\\\/div><h3 class=\\\"header-vfC6AV auto-hide-last-sibling-br\\\"><strong>Advantages<\\\/strong><\\\/h3><ol class=\\\"auto-hide-last-sibling-br\\\"><li><div class=\\\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\\\">After HASL, the composition of the solder coating stays the same. So the coating is consistent and solderability is good. By contrast, electroplated lead-tin alloy coatings can change composition as the plating bath changes. That means the lead\\\/tin ratio in plated layers can vary.<\\\/div><\\\/li><li><div class=\\\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\\\">Infrared or hot-oil reflow methods do not fully protect the side edges of traces. HASL coats and fully covers the side edges of traces. This prevents corrosion and broken traces on the PCB. That means boards last longer in storage and use, and the finished electronic products are more reliable. HASL is widely used in SMT processes today.<\\\/div><\\\/li><li><div class=\\\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\\\">By changing the air-knife angle, the board rise speed, and other process settings, you can control coating thickness. That makes it easy to get the solder layer thickness you want. It is more flexible than some hot-melt methods.<\\\/div><\\\/li><li><div class=\\\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\\\">When boards are made by pattern plating and etching, wave soldering can cause bridging because lead\\\/tin alloy sits on traces. The alloy flow can also wrinkle or lift solder mask. Boards made with HASL have no solder on traces, so bridging and mask wrinkling or peeling are eliminated.<\\\/div><\\\/li><\\\/ol><h3 class=\\\"header-vfC6AV auto-hide-last-sibling-br\\\"><strong>Disadvantages<\\\/strong><\\\/h3><ol class=\\\"auto-hide-last-sibling-br\\\"><li><div class=\\\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\\\">Copper contamination of the solder pot. In HASL the board is dipped in the solder pot for several seconds. That causes copper to dissolve into the solder. When copper reaches about 0.29% or higher in the solder, the solder loses some flow ability. The solder coating becomes semi-wetting and the board solderability drops.<\\\/div><\\\/li><li><div class=\\\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\\\">Lead is a heavy metal and it is harmful to people and to the environment. Many solder coatings with lead were common. Now lead-free solders have been developed and are sold to replace lead-tin alloys in production.<\\\/div><\\\/li><li><div class=\\\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\\\">High production cost. A good imported HASL machine can cost more than three hundred thousand US dollars. This makes HASL production cost higher than some hot-melt methods.<\\\/div><\\\/li><li><div class=\\\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\\\">Large thermal shock in HASL. The big heat change can warp or bow the PCB substrate and the board can lift. That means HASL causes larger thermal stress.<\\\/div><\\\/li><\\\/ol><h2 class=\\\"header-vfC6AV auto-hide-last-sibling-br\\\"><strong>Control and choice of HASL process parameters<\\\/strong><\\\/h2><div class=\\\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\\\">The main HASL process parameters include solder temperature, dip time, air-knife pressure, air-knife temperature, air-knife angle, distance between air knives, and board rise speed. Below is an explanation of how these parameters affect board quality.<\\\/div><ol class=\\\"auto-hide-last-sibling-br\\\"><li><div class=\\\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\\\"><strong>Dip time (immersion time):<\\\/strong><br class=\\\"container-utlnW2 wrapper-d0Cc1k undefined\\\" \\\/>Dip time has a big effect on solder coating quality. In dipping, the base copper and the tin in the solder form an intermetallic compound (IMC). At the same time a solder layer forms on traces. This whole process usually needs 2\\u20134 seconds to make good IMC. The longer the time, the thicker the solder. But if you dip too long, the board core material can delaminate and the solder mask can blister. If time is too short, you get partial wetting. That causes local whitening of the solder surface and can make the solder surface rough.<\\\/div><\\\/li><li><div class=\\\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\\\"><strong>Solder pot temperature:<\\\/strong><br class=\\\"container-utlnW2 wrapper-d0Cc1k undefined\\\" \\\/>The common solder used for soldering PCBs and components is lead 37 \\\/ tin 63 alloy, whose melting point is 183\\u00b0C. When the solder temp is between 183\\u00b0C and 221\\u00b0C, its ability to form intermetallic compounds with copper is small. At 221\\u00b0C the solder enters the wetting range. The wetting range is 221\\u00b0C to 293\\u00b0C. Because high temperature can damage the board, you should pick a lower solder temp in the wetting range. Theoretical work finds 232\\u00b0C as the best solder temperature. In practice, about 250\\u00b0C is often used as the best temperature.<\\\/div><\\\/li><li><div class=\\\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\\\"><strong>Air-knife pressure:<\\\/strong><br class=\\\"container-utlnW2 wrapper-d0Cc1k undefined\\\" \\\/>After dipping, a lot of solder stays on the board and most plated through holes get filled with solder. The air knives are there to blow off extra solder and to open up the plated through holes without making hole diameters too small. The energy to do that comes from air-knife pressure and air speed. The higher the pressure and the faster the air, the thinner the solder coating. So air-knife pressure is one of the most important HASL parameters. Usually air-knife pressure is 0.3\\u20130.5 MPa.<\\\/div><div class=\\\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\\\">Pressure before and after the knife is usually set so the front is higher and the back is lower. The pressure difference is about 0.05 MPa. You can adjust front and back pressure based on pad patterns on the board to keep IC areas flat and to avoid SMT parts from sticking up. Check the machine manual for exact recommended values.<\\\/div><\\\/li><li><div class=\\\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\\\"><strong>Air-knife temperature:<\\\/strong><br class=\\\"container-utlnW2 wrapper-d0Cc1k undefined\\\" \\\/>Hot air from the air knife does not change board temperature much and it does not affect air pressure much. But raising air-knife internal temperature helps air expand. So at the same pressure, higher air temperature gives a larger air volume and faster speed. That makes stronger leveling force. Air-knife temperature also affects the appearance of the solder after leveling. When air-knife temp is below 93\\u00b0C, the layer looks dull. As air temp rises, the dull look reduces. At 176\\u00b0C the dull look goes away completely. So the air-knife temperature should not be below 176\\u00b0C. To get good flat solder, air-knife temp is often set between 300\\u00b0C and 400\\u00b0C.<\\\/div><\\\/li><li><div class=\\\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\\\"><strong>Distance between air knives:<\\\/strong><br class=\\\"container-utlnW2 wrapper-d0Cc1k undefined\\\" \\\/>When hot air leaves the air-knife nozzle, its speed slows down. The slowdown goes with the square of the distance between knives. So the larger the gap, the lower the air speed, and the weaker the leveling force. Typical air-knife nozzle spacing is 0.95\\u20131.25 cm. Do not make the nozzle spacing too small, or air friction can harm the board surface. The gap between upper and lower air knives is usually kept around 4 mm. Too large a gap can cause solder splatter.<\\\/div><\\\/li><li><div class=\\\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\\\"><strong>Air-knife angle:<\\\/strong><br class=\\\"container-utlnW2 wrapper-d0Cc1k undefined\\\" \\\/>How the knife is angled affects solder coating thickness. If the angle is wrong, the two sides of the board can get different solder thickness. Wrong angle can also cause molten solder to splatter and make noise. Usually front and back air-knives are tilted down about 4 degrees. Adjust slightly for specific board shapes and pad layout.<\\\/div><\\\/li><li><div class=\\\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\\\"><strong>Board rise speed (conveyor or lift speed):<\\\/strong><br class=\\\"container-utlnW2 wrapper-d0Cc1k undefined\\\" \\\/>Another variable is the speed at which the board moves through the air knives. Speed affects coating thickness. Slow speed means more air hits the board so the coating is thinner. Fast speed means the coating is thicker and can even block holes.<\\\/div><\\\/li><li><div class=\\\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\\\"><strong>Preheat temperature and time:<\\\/strong><br class=\\\"container-utlnW2 wrapper-d0Cc1k undefined\\\" \\\/>Preheat aims to activate flux and reduce thermal shock. Typical preheat temperature listed is 343\\u00b0C. With 15 seconds preheat, board surface can reach about 80\\u00b0C. Some HASL lines do not use a preheat step.<\\\/div><\\\/li><\\\/ol><div class=\\\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\\\">Below is a clear table that sums up the key HASL process parameters, the recommended ranges, and short notes. Use it as a quick reference when you set up or test the line.<\\\/div><h4 class=\\\"header-vfC6AV auto-hide-last-sibling-br\\\"><strong>Process parameters \\u2014 table with recommended ranges<\\\/strong><\\\/h4><table class=\\\"w-fit min-w-(--thread-content-width)\\\" data-start=\\\"100\\\" data-end=\\\"916\\\"><thead data-start=\\\"100\\\" data-end=\\\"158\\\"><tr data-start=\\\"100\\\" data-end=\\\"158\\\"><th data-start=\\\"100\\\" data-end=\\\"122\\\" data-col-size=\\\"sm\\\">Parameter<\\\/th><th data-start=\\\"122\\\" data-end=\\\"142\\\" data-col-size=\\\"sm\\\">Recommended Range<\\\/th><th data-start=\\\"142\\\" data-end=\\\"150\\\" data-col-size=\\\"sm\\\">Unit<\\\/th><th data-start=\\\"150\\\" data-end=\\\"158\\\" data-col-size=\\\"md\\\">Note<\\\/th><\\\/tr><\\\/thead><tbody data-start=\\\"179\\\" data-end=\\\"916\\\"><tr data-start=\\\"179\\\" data-end=\\\"265\\\"><td data-start=\\\"179\\\" data-end=\\\"208\\\" data-col-size=\\\"sm\\\"><strong data-start=\\\"181\\\" data-end=\\\"207\\\">Solder Pot Temp (Lead)<\\\/strong><\\\/td><td data-start=\\\"208\\\" data-end=\\\"218\\\" data-col-size=\\\"sm\\\">245\\u2013260<\\\/td><td data-start=\\\"218\\\" data-end=\\\"223\\\" data-col-size=\\\"sm\\\">\\u00b0C<\\\/td><td data-start=\\\"223\\\" data-end=\\\"265\\\" data-col-size=\\\"md\\\">Common 250\\u00b0C. Too high may warp board.<\\\/td><\\\/tr><tr data-start=\\\"266\\\" data-end=\\\"354\\\"><td data-start=\\\"266\\\" data-end=\\\"300\\\" data-col-size=\\\"sm\\\"><strong data-start=\\\"268\\\" data-end=\\\"299\\\">Solder Pot Temp (Lead-Free)<\\\/strong><\\\/td><td data-start=\\\"300\\\" data-end=\\\"310\\\" data-col-size=\\\"sm\\\">280\\u2013300<\\\/td><td data-start=\\\"310\\\" data-end=\\\"315\\\" data-col-size=\\\"sm\\\">\\u00b0C<\\\/td><td data-start=\\\"315\\\" data-end=\\\"354\\\" data-col-size=\\\"md\\\">Common 290\\u00b0C. Higher melting point.<\\\/td><\\\/tr><tr data-start=\\\"355\\\" data-end=\\\"436\\\"><td data-start=\\\"355\\\" data-end=\\\"376\\\" data-col-size=\\\"sm\\\"><strong data-start=\\\"357\\\" data-end=\\\"375\\\">Immersion Time<\\\/strong><\\\/td><td data-start=\\\"376\\\" data-end=\\\"382\\\" data-col-size=\\\"sm\\\">2\\u20134<\\\/td><td data-start=\\\"382\\\" data-end=\\\"386\\\" data-col-size=\\\"sm\\\">s<\\\/td><td data-start=\\\"386\\\" data-end=\\\"436\\\" data-col-size=\\\"md\\\">Too long \\u2192 bubbling. Too short \\u2192 poor wetting.<\\\/td><\\\/tr><tr data-start=\\\"437\\\" data-end=\\\"544\\\"><td data-start=\\\"437\\\" data-end=\\\"462\\\" data-col-size=\\\"sm\\\"><strong data-start=\\\"439\\\" data-end=\\\"461\\\">Air Knife Pressure<\\\/strong><\\\/td><td data-start=\\\"462\\\" data-end=\\\"474\\\" data-col-size=\\\"sm\\\">0.30\\u20130.50<\\\/td><td data-start=\\\"474\\\" data-end=\\\"480\\\" data-col-size=\\\"sm\\\">MPa<\\\/td><td data-start=\\\"480\\\" data-end=\\\"544\\\" data-col-size=\\\"md\\\">Higher \\u2192 thinner coating. Front slightly higher (\\u22480.05 MPa).<\\\/td><\\\/tr><tr data-start=\\\"545\\\" data-end=\\\"643\\\"><td data-start=\\\"545\\\" data-end=\\\"566\\\" data-col-size=\\\"sm\\\"><strong data-start=\\\"547\\\" data-end=\\\"565\\\">Air Knife Temp<\\\/strong><\\\/td><td data-start=\\\"566\\\" data-end=\\\"589\\\" data-col-size=\\\"sm\\\">\\u2265176; common 300\\u2013400<\\\/td><td data-start=\\\"589\\\" data-end=\\\"594\\\" data-col-size=\\\"sm\\\">\\u00b0C<\\\/td><td data-start=\\\"594\\\" data-end=\\\"643\\\" data-col-size=\\\"md\\\">Higher \\u2192 faster air flow and better leveling.<\\\/td><\\\/tr><tr data-start=\\\"644\\\" data-end=\\\"713\\\"><td data-start=\\\"644\\\" data-end=\\\"664\\\" data-col-size=\\\"sm\\\"><strong data-start=\\\"646\\\" data-end=\\\"663\\\">Air Knife Gap<\\\/strong><\\\/td><td data-start=\\\"664\\\" data-end=\\\"676\\\" data-col-size=\\\"sm\\\">0.95\\u20131.25<\\\/td><td data-start=\\\"676\\\" data-end=\\\"681\\\" data-col-size=\\\"sm\\\">cm<\\\/td><td data-start=\\\"681\\\" data-end=\\\"713\\\" data-col-size=\\\"md\\\">Larger gap \\u2192 weaker airflow.<\\\/td><\\\/tr><tr data-start=\\\"714\\\" data-end=\\\"789\\\"><td data-start=\\\"714\\\" data-end=\\\"736\\\" data-col-size=\\\"sm\\\"><strong data-start=\\\"716\\\" data-end=\\\"735\\\">Air Knife Angle<\\\/strong><\\\/td><td data-start=\\\"736\\\" data-end=\\\"756\\\" data-col-size=\\\"sm\\\">2\\u00b0\\u20136\\u00b0 (common 4\\u00b0)<\\\/td><td data-start=\\\"756\\\" data-end=\\\"760\\\" data-col-size=\\\"sm\\\">\\u00b0<\\\/td><td data-start=\\\"760\\\" data-end=\\\"789\\\" data-col-size=\\\"md\\\">Affects coating evenness.<\\\/td><\\\/tr><tr data-start=\\\"790\\\" data-end=\\\"858\\\"><td data-start=\\\"790\\\" data-end=\\\"809\\\" data-col-size=\\\"sm\\\"><strong data-start=\\\"792\\\" data-end=\\\"808\\\">Preheat Temp<\\\/strong><\\\/td><td data-start=\\\"809\\\" data-end=\\\"819\\\" data-col-size=\\\"sm\\\">120\\u2013180<\\\/td><td data-start=\\\"819\\\" data-end=\\\"824\\\" data-col-size=\\\"sm\\\">\\u00b0C<\\\/td><td data-start=\\\"824\\\" data-end=\\\"858\\\" data-col-size=\\\"md\\\">Board surface target 60\\u2013100\\u00b0C.<\\\/td><\\\/tr><tr data-start=\\\"859\\\" data-end=\\\"916\\\"><td data-start=\\\"859\\\" data-end=\\\"878\\\" data-col-size=\\\"sm\\\"><strong data-start=\\\"861\\\" data-end=\\\"877\\\">Preheat Time<\\\/strong><\\\/td><td data-start=\\\"878\\\" data-end=\\\"886\\\" data-col-size=\\\"sm\\\">10\\u201330<\\\/td><td data-start=\\\"886\\\" data-end=\\\"890\\\" data-col-size=\\\"sm\\\">s<\\\/td><td data-start=\\\"890\\\" data-end=\\\"916\\\" data-col-size=\\\"md\\\">Reduces thermal shock.<\\\/td><\\\/tr><\\\/tbody><\\\/table><div class=\\\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\\\">Use these ranges as starting points. Then run test boards and tune one parameter at a time. Check for dull surface, bridging, or delam. If you see a problem, change one item, test again, and record the result.<\\\/div><h3 class=\\\"header-vfC6AV auto-hide-last-sibling-br\\\"><strong>Leaded HASL vs lead-free HASL<\\\/strong><\\\/h3><div class=\\\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\\\">Many people know about HASL, but they may not know solders come in leaded and lead-free types. As electronics evolve, PCB technology keeps improving. Common surface finishes include HASL, immersion gold, electroplated gold, OSP, and so on. HASL comes as leaded and lead-free. Here\\u2019s the difference:<\\\/div><ol class=\\\"auto-hide-last-sibling-br\\\"><li><div class=\\\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\\\">Lead-free HASL is more eco-friendly because it does not contain lead. Its melting point is around 218\\u00b0C. For lead-free HASL, the solder pot temperature needs to be controlled at about 280\\u2013300\\u00b0C; wave solder temperature should be around 260\\u00b0C; reflow temperature is about 260\\u2013270\\u00b0C.<\\\/div><\\\/li><li><div class=\\\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\\\">Leaded HASL is not eco-friendly. It contains lead and its melting point is about 183\\u00b0C. For leaded HASL the solder pot temperature should be controlled at about 245\\u2013260\\u00b0C; wave solder should be about 250\\u00b0C; reflow temp around 245\\u2013255\\u00b0C.<\\\/div><\\\/li><li><div class=\\\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\\\">Look at the solder surface: leaded HASL looks brighter, lead-free HASL looks duller. Lead-free wetting is a bit worse than leaded wetting.<\\\/div><\\\/li><li><div class=\\\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\\\">Lead content rules: lead-free solders have lead below 0.5% while leaded solders have lead up to 37%.<\\\/div><\\\/li><li><div class=\\\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\\\">Lead helps improve solder wick and activity during soldering. Leaded solder wire is easier to use compared to lead-free wire. But lead is toxic and long-term exposure is bad for people. Lead-free solder has a higher melting point so solder joints can be stronger.<\\\/div><\\\/li><li><div class=\\\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\\\">For PCB surface finish pricing, leaded HASL and lead-free HASL usually cost the same. There is no price difference in most cases.<\\\/div><\\\/li><\\\/ol><h3 class=\\\"header-vfC6AV auto-hide-last-sibling-br\\\"><strong>How to tell if a PCB has leaded or lead-free HASL?<\\\/strong><\\\/h3><ol class=\\\"auto-hide-last-sibling-br\\\"><li><div class=\\\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\\\">Look at the solder surface. Leaden solder looks bright and shiny. Lead-free solder (SAC alloys) looks more dull. Lead-free wetting is a bit worse than leaded.<\\\/div><\\\/li><li><div class=\\\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\\\">Leaded solder is harmful to people. Lead-free is safer. The eutectic temperature depends on the lead-free alloy. For example, SAC (SnAgCu) eutectic is near 217\\u00b0C, and soldering temp should be eutectic plus 30\\u201350\\u00b0C. For leaded eutectic (Sn63Pb37), eutectic temp is 183\\u00b0C.<\\\/div><\\\/li><li><div class=\\\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\\\">Lead content: lead-free solders have lead \\u2264 0.5%, leaded can have about 37% lead.<\\\/div><\\\/li><li><div class=\\\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\\\">Lead raises solder activity so leaded solder is easier to use in soldering. But lead is toxic and bad for health. Also lead-free solder has a higher melting point, which can make solder joints mechanically stronger.<\\\/div><\\\/li><\\\/ol><h2 class=\\\"header-vfC6AV auto-hide-last-sibling-br\\\"><strong>Summary<\\\/strong><\\\/h2><div class=\\\"auto-hide-last-sibling-br paragraph-JOTKXA paragraph-element br-paragraph-space\\\">HASL is a common and proven PCB finish. It protects copper and gives good solderability. HASL has pros and cons. It covers trace edges and helps reliability, but it may add thermal stress and cost. Key settings are solder temp, dip time, air-knife pressure, air temp, knife angle, and board speed. Use the table as a guide. Test and tune for each board type. 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class=\\\"elementor-section elementor-top-section elementor-element elementor-element-ow9bnww elementor-section-content-top elementor-section-boxed elementor-section-height-default elementor-section-height-default\\\" data-id=\\\"ow9bnww\\\" data-element_type=\\\"section\\\" data-settings=\\\"{&quot;background_background&quot;:&quot;classic&quot;}\\\">\\n\\t\\t\\t\\t\\t\\t\\t<div class=\\\"elementor-background-overlay\\\"><\\\/div>\\n\\t\\t\\t\\t\\t\\t\\t<div class=\\\"elementor-container elementor-column-gap-no\\\">\\n\\t\\t\\t\\t\\t<div class=\\\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-7882748\\\" data-id=\\\"7882748\\\" data-element_type=\\\"column\\\">\\n\\t\\t\\t<div class=\\\"elementor-widget-wrap elementor-element-populated\\\">\\n\\t\\t\\t\\t\\t\\t<div class=\\\"elementor-element elementor-element-9fc6712 elementor-widget elementor-widget-heading\\\" data-id=\\\"9fc6712\\\" data-element_type=\\\"widget\\\" data-widget_type=\\\"heading.default\\\">\\n\\t\\t\\t\\t<div class=\\\"elementor-widget-container\\\">\\n\\t\\t\\t\\t\\t<h2 class=\\\"elementor-heading-title elementor-size-default\\\">Frequently Asked Questions<\\\/h2>\\t\\t\\t\\t<\\\/div>\\n\\t\\t\\t\\t<\\\/div>\\n\\t\\t\\t\\t<div class=\\\"elementor-element elementor-element-631b990 elementor-widget elementor-widget-accordion\\\" data-id=\\\"631b990\\\" data-element_type=\\\"widget\\\" data-widget_type=\\\"accordion.default\\\">\\n\\t\\t\\t\\t<div class=\\\"elementor-widget-container\\\">\\n\\t\\t\\t\\t\\t\\t\\t<div class=\\\"elementor-accordion\\\">\\n\\t\\t\\t\\t\\t\\t\\t<div class=\\\"elementor-accordion-item\\\">\\n\\t\\t\\t\\t\\t<div id=\\\"elementor-tab-title-1031\\\" class=\\\"elementor-tab-title\\\" data-tab=\\\"1\\\" role=\\\"button\\\" aria-controls=\\\"elementor-tab-content-1031\\\" aria-expanded=\\\"false\\\">\\n\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t<span class=\\\"elementor-accordion-icon elementor-accordion-icon-right\\\" aria-hidden=\\\"true\\\">\\n\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t<span class=\\\"elementor-accordion-icon-closed\\\"><svg class=\\\"e-font-icon-svg e-fas-plus-circle\\\" viewBox=\\\"0 0 512 512\\\" xmlns=\\\"http:\\\/\\\/www.w3.org\\\/2000\\\/svg\\\"><path d=\\\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zm144 276c0 6.6-5.4 12-12 12h-92v92c0 6.6-5.4 12-12 12h-56c-6.6 0-12-5.4-12-12v-92h-92c-6.6 0-12-5.4-12-12v-56c0-6.6 5.4-12 12-12h92v-92c0-6.6 5.4-12 12-12h56c6.6 0 12 5.4 12 12v92h92c6.6 0 12 5.4 12 12v56z\\\"><\\\/path><\\\/svg><\\\/span>\\n\\t\\t\\t\\t\\t\\t\\t\\t<span class=\\\"elementor-accordion-icon-opened\\\"><svg class=\\\"e-font-icon-svg e-fas-minus-circle\\\" viewBox=\\\"0 0 512 512\\\" xmlns=\\\"http:\\\/\\\/www.w3.org\\\/2000\\\/svg\\\"><path d=\\\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zM124 296c-6.6 0-12-5.4-12-12v-56c0-6.6 5.4-12 12-12h264c6.6 0 12 5.4 12 12v56c0 6.6-5.4 12-12 12H124z\\\"><\\\/path><\\\/svg><\\\/span>\\n\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t<\\\/span>\\n\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t<a class=\\\"elementor-accordion-title\\\" tabindex=\\\"0\\\">Why choose HASL for my PCB?<\\\/a>\\n\\t\\t\\t\\t\\t<\\\/div>\\n\\t\\t\\t\\t\\t<div id=\\\"elementor-tab-content-1031\\\" class=\\\"elementor-tab-content elementor-clearfix\\\" data-tab=\\\"1\\\" role=\\\"region\\\" aria-labelledby=\\\"elementor-tab-title-1031\\\"><p>HASL provides excellent solderability, tolerates multiple thermal cycles, and is one of the most cost-effective surface finishes for standard SMT and through-hole assembly.<\\\/p><\\\/div>\\n\\t\\t\\t\\t<\\\/div>\\n\\t\\t\\t\\t\\t\\t\\t<div class=\\\"elementor-accordion-item\\\">\\n\\t\\t\\t\\t\\t<div id=\\\"elementor-tab-title-1032\\\" class=\\\"elementor-tab-title\\\" data-tab=\\\"2\\\" role=\\\"button\\\" aria-controls=\\\"elementor-tab-content-1032\\\" aria-expanded=\\\"false\\\">\\n\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t<span class=\\\"elementor-accordion-icon elementor-accordion-icon-right\\\" aria-hidden=\\\"true\\\">\\n\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t<span class=\\\"elementor-accordion-icon-closed\\\"><svg class=\\\"e-font-icon-svg e-fas-plus-circle\\\" viewBox=\\\"0 0 512 512\\\" xmlns=\\\"http:\\\/\\\/www.w3.org\\\/2000\\\/svg\\\"><path d=\\\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zm144 276c0 6.6-5.4 12-12 12h-92v92c0 6.6-5.4 12-12 12h-56c-6.6 0-12-5.4-12-12v-92h-92c-6.6 0-12-5.4-12-12v-56c0-6.6 5.4-12 12-12h92v-92c0-6.6 5.4-12 12-12h56c6.6 0 12 5.4 12 12v92h92c6.6 0 12 5.4 12 12v56z\\\"><\\\/path><\\\/svg><\\\/span>\\n\\t\\t\\t\\t\\t\\t\\t\\t<span class=\\\"elementor-accordion-icon-opened\\\"><svg class=\\\"e-font-icon-svg e-fas-minus-circle\\\" viewBox=\\\"0 0 512 512\\\" xmlns=\\\"http:\\\/\\\/www.w3.org\\\/2000\\\/svg\\\"><path d=\\\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zM124 296c-6.6 0-12-5.4-12-12v-56c0-6.6 5.4-12 12-12h264c6.6 0 12 5.4 12 12v56c0 6.6-5.4 12-12 12H124z\\\"><\\\/path><\\\/svg><\\\/span>\\n\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t<\\\/span>\\n\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t<a class=\\\"elementor-accordion-title\\\" tabindex=\\\"0\\\">What are the main downsides of HASL?<\\\/a>\\n\\t\\t\\t\\t\\t<\\\/div>\\n\\t\\t\\t\\t\\t<div id=\\\"elementor-tab-content-1032\\\" class=\\\"elementor-tab-content elementor-clearfix\\\" data-tab=\\\"2\\\" role=\\\"region\\\" aria-labelledby=\\\"elementor-tab-title-1032\\\"><p>HASL can produce an uneven surface (poor planarity) compared with planar finishes, making it less ideal for very fine-pitch components and some BGAs.<\\\/p><\\\/div>\\n\\t\\t\\t\\t<\\\/div>\\n\\t\\t\\t\\t\\t\\t\\t<div class=\\\"elementor-accordion-item\\\">\\n\\t\\t\\t\\t\\t<div id=\\\"elementor-tab-title-1033\\\" class=\\\"elementor-tab-title\\\" data-tab=\\\"3\\\" role=\\\"button\\\" aria-controls=\\\"elementor-tab-content-1033\\\" aria-expanded=\\\"false\\\">\\n\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t<span class=\\\"elementor-accordion-icon elementor-accordion-icon-right\\\" aria-hidden=\\\"true\\\">\\n\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t<span class=\\\"elementor-accordion-icon-closed\\\"><svg class=\\\"e-font-icon-svg e-fas-plus-circle\\\" viewBox=\\\"0 0 512 512\\\" xmlns=\\\"http:\\\/\\\/www.w3.org\\\/2000\\\/svg\\\"><path d=\\\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zm144 276c0 6.6-5.4 12-12 12h-92v92c0 6.6-5.4 12-12 12h-56c-6.6 0-12-5.4-12-12v-92h-92c-6.6 0-12-5.4-12-12v-56c0-6.6 5.4-12 12-12h92v-92c0-6.6 5.4-12 12-12h56c6.6 0 12 5.4 12 12v92h92c6.6 0 12 5.4 12 12v56z\\\"><\\\/path><\\\/svg><\\\/span>\\n\\t\\t\\t\\t\\t\\t\\t\\t<span class=\\\"elementor-accordion-icon-opened\\\"><svg class=\\\"e-font-icon-svg e-fas-minus-circle\\\" viewBox=\\\"0 0 512 512\\\" xmlns=\\\"http:\\\/\\\/www.w3.org\\\/2000\\\/svg\\\"><path d=\\\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zM124 296c-6.6 0-12-5.4-12-12v-56c0-6.6 5.4-12 12-12h264c6.6 0 12 5.4 12 12v56c0 6.6-5.4 12-12 12H124z\\\"><\\\/path><\\\/svg><\\\/span>\\n\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t<\\\/span>\\n\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t<a class=\\\"elementor-accordion-title\\\" tabindex=\\\"0\\\">How does HASL compare with ENIG?<\\\/a>\\n\\t\\t\\t\\t\\t<\\\/div>\\n\\t\\t\\t\\t\\t<div id=\\\"elementor-tab-content-1033\\\" class=\\\"elementor-tab-content elementor-clearfix\\\" data-tab=\\\"3\\\" role=\\\"region\\\" aria-labelledby=\\\"elementor-tab-title-1033\\\"><p>HASL is cheaper and gives robust solder joints, but ENIG offers a much flatter, more uniform surface (better for fine-pitch\\\/BGA and planar requirements). Choose based on component pitch and connector\\\/mating needs.<\\\/p><\\\/div>\\n\\t\\t\\t\\t<\\\/div>\\n\\t\\t\\t\\t\\t\\t\\t<div class=\\\"elementor-accordion-item\\\">\\n\\t\\t\\t\\t\\t<div id=\\\"elementor-tab-title-1034\\\" class=\\\"elementor-tab-title\\\" data-tab=\\\"4\\\" role=\\\"button\\\" aria-controls=\\\"elementor-tab-content-1034\\\" aria-expanded=\\\"false\\\">\\n\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t<span class=\\\"elementor-accordion-icon elementor-accordion-icon-right\\\" aria-hidden=\\\"true\\\">\\n\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t<span class=\\\"elementor-accordion-icon-closed\\\"><svg class=\\\"e-font-icon-svg e-fas-plus-circle\\\" viewBox=\\\"0 0 512 512\\\" xmlns=\\\"http:\\\/\\\/www.w3.org\\\/2000\\\/svg\\\"><path d=\\\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zm144 276c0 6.6-5.4 12-12 12h-92v92c0 6.6-5.4 12-12 12h-56c-6.6 0-12-5.4-12-12v-92h-92c-6.6 0-12-5.4-12-12v-56c0-6.6 5.4-12 12-12h92v-92c0-6.6 5.4-12 12-12h56c6.6 0 12 5.4 12 12v92h92c6.6 0 12 5.4 12 12v56z\\\"><\\\/path><\\\/svg><\\\/span>\\n\\t\\t\\t\\t\\t\\t\\t\\t<span class=\\\"elementor-accordion-icon-opened\\\"><svg class=\\\"e-font-icon-svg e-fas-minus-circle\\\" viewBox=\\\"0 0 512 512\\\" xmlns=\\\"http:\\\/\\\/www.w3.org\\\/2000\\\/svg\\\"><path d=\\\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zM124 296c-6.6 0-12-5.4-12-12v-56c0-6.6 5.4-12 12-12h264c6.6 0 12 5.4 12 12v56c0 6.6-5.4 12-12 12H124z\\\"><\\\/path><\\\/svg><\\\/span>\\n\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t<\\\/span>\\n\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t<a class=\\\"elementor-accordion-title\\\" tabindex=\\\"0\\\">Is HASL suitable for fine-pitch SMD and BGAs?<\\\/a>\\n\\t\\t\\t\\t\\t<\\\/div>\\n\\t\\t\\t\\t\\t<div id=\\\"elementor-tab-content-1034\\\" class=\\\"elementor-tab-content elementor-clearfix\\\" data-tab=\\\"4\\\" role=\\\"region\\\" aria-labelledby=\\\"elementor-tab-title-1034\\\"><p>Generally not the first choice for very fine pitch (&lt;0.5 mm) or dense BGAs because of surface topography; many designers prefer ENIG or other planar finishes for those cases.<\\\/p><\\\/div>\\n\\t\\t\\t\\t<\\\/div>\\n\\t\\t\\t\\t\\t\\t\\t<div class=\\\"elementor-accordion-item\\\">\\n\\t\\t\\t\\t\\t<div id=\\\"elementor-tab-title-1035\\\" class=\\\"elementor-tab-title\\\" data-tab=\\\"5\\\" role=\\\"button\\\" aria-controls=\\\"elementor-tab-content-1035\\\" aria-expanded=\\\"false\\\">\\n\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t<span class=\\\"elementor-accordion-icon elementor-accordion-icon-right\\\" aria-hidden=\\\"true\\\">\\n\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t<span class=\\\"elementor-accordion-icon-closed\\\"><svg class=\\\"e-font-icon-svg e-fas-plus-circle\\\" viewBox=\\\"0 0 512 512\\\" xmlns=\\\"http:\\\/\\\/www.w3.org\\\/2000\\\/svg\\\"><path d=\\\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zm144 276c0 6.6-5.4 12-12 12h-92v92c0 6.6-5.4 12-12 12h-56c-6.6 0-12-5.4-12-12v-92h-92c-6.6 0-12-5.4-12-12v-56c0-6.6 5.4-12 12-12h92v-92c0-6.6 5.4-12 12-12h56c6.6 0 12 5.4 12 12v92h92c6.6 0 12 5.4 12 12v56z\\\"><\\\/path><\\\/svg><\\\/span>\\n\\t\\t\\t\\t\\t\\t\\t\\t<span class=\\\"elementor-accordion-icon-opened\\\"><svg class=\\\"e-font-icon-svg e-fas-minus-circle\\\" viewBox=\\\"0 0 512 512\\\" xmlns=\\\"http:\\\/\\\/www.w3.org\\\/2000\\\/svg\\\"><path d=\\\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zM124 296c-6.6 0-12-5.4-12-12v-56c0-6.6 5.4-12 12-12h264c6.6 0 12 5.4 12 12v56c0 6.6-5.4 12-12 12H124z\\\"><\\\/path><\\\/svg><\\\/span>\\n\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t<\\\/span>\\n\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t<a class=\\\"elementor-accordion-title\\\" tabindex=\\\"0\\\">Does HASL add lead-time or cost?<\\\/a>\\n\\t\\t\\t\\t\\t<\\\/div>\\n\\t\\t\\t\\t\\t<div id=\\\"elementor-tab-content-1035\\\" class=\\\"elementor-tab-content elementor-clearfix\\\" data-tab=\\\"5\\\" role=\\\"region\\\" aria-labelledby=\\\"elementor-tab-title-1035\\\"><p>HASL is usually one of the lower-cost finishes and is fast to apply, but lead-free HASL may require tighter process control and slightly different handling\\u2014ask your fab for lead-time impacts.<\\\/p><\\\/div>\\n\\t\\t\\t\\t<\\\/div>\\n\\t\\t\\t\\t\\t\\t\\t<div class=\\\"elementor-accordion-item\\\">\\n\\t\\t\\t\\t\\t<div id=\\\"elementor-tab-title-1036\\\" class=\\\"elementor-tab-title\\\" data-tab=\\\"6\\\" role=\\\"button\\\" aria-controls=\\\"elementor-tab-content-1036\\\" aria-expanded=\\\"false\\\">\\n\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t<span class=\\\"elementor-accordion-icon elementor-accordion-icon-right\\\" aria-hidden=\\\"true\\\">\\n\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t<span class=\\\"elementor-accordion-icon-closed\\\"><svg class=\\\"e-font-icon-svg e-fas-plus-circle\\\" viewBox=\\\"0 0 512 512\\\" xmlns=\\\"http:\\\/\\\/www.w3.org\\\/2000\\\/svg\\\"><path d=\\\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zm144 276c0 6.6-5.4 12-12 12h-92v92c0 6.6-5.4 12-12 12h-56c-6.6 0-12-5.4-12-12v-92h-92c-6.6 0-12-5.4-12-12v-56c0-6.6 5.4-12 12-12h92v-92c0-6.6 5.4-12 12-12h56c6.6 0 12 5.4 12 12v92h92c6.6 0 12 5.4 12 12v56z\\\"><\\\/path><\\\/svg><\\\/span>\\n\\t\\t\\t\\t\\t\\t\\t\\t<span class=\\\"elementor-accordion-icon-opened\\\"><svg class=\\\"e-font-icon-svg e-fas-minus-circle\\\" viewBox=\\\"0 0 512 512\\\" xmlns=\\\"http:\\\/\\\/www.w3.org\\\/2000\\\/svg\\\"><path d=\\\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zM124 296c-6.6 0-12-5.4-12-12v-56c0-6.6 5.4-12 12-12h264c6.6 0 12 5.4 12 12v56c0 6.6-5.4 12-12 12H124z\\\"><\\\/path><\\\/svg><\\\/span>\\n\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t<\\\/span>\\n\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t\\t<a class=\\\"elementor-accordion-title\\\" tabindex=\\\"0\\\">What should I include in fabrication notes when requesting HASL?<\\\/a>\\n\\t\\t\\t\\t\\t<\\\/div>\\n\\t\\t\\t\\t\\t<div id=\\\"elementor-tab-content-1036\\\" class=\\\"elementor-tab-content elementor-clearfix\\\" data-tab=\\\"6\\\" role=\\\"region\\\" aria-labelledby=\\\"elementor-tab-title-1036\\\"><p>Specify whether you want lead-free (RoHS) or traditional SnPb HASL, any special pad area or fine-pitch concerns, and request the fab\\u2019s DFM feedback about minimum pad-to-pad clearances and planarity limits.<\\\/p><\\\/div>\\n\\t\\t\\t\\t<\\\/div>\\n\\t\\t\\t\\t\\t\\t\\t\\t<\\\/div>\\n\\t\\t\\t\\t\\t\\t<\\\/div>\\n\\t\\t\\t\\t<\\\/div>\\n\\t\\t\\t\\t\\t<\\\/div>\\n\\t\\t<\\\/div>\\n\\t\\t\\t\\t\\t<\\\/div>\\n\\t\\t<\\\/section>\\n\\t\\t\",\"scripts\":[],\"styles\":[]}}"],"_uag_css_file_name":["uag-css-2392.css"],"_uag_js_file_name":["uag-js-2392.js"]},"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"trp-custom-language-flag":false},"uagb_author_info":{"display_name":"Philifast","author_link":"https:\/\/flj-pcb.com\/cs\/author\/2475017442jygmail-com\/"},"uagb_comment_info":0,"uagb_excerpt":"What is HASL? HASL stands for Hot Air Solder Leveling. People also call it hot air solder leveling or hot [&hellip;]","_links":{"self":[{"href":"https:\/\/flj-pcb.com\/cs\/wp-json\/wp\/v2\/pages\/2392","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/flj-pcb.com\/cs\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/flj-pcb.com\/cs\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/flj-pcb.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/flj-pcb.com\/cs\/wp-json\/wp\/v2\/comments?post=2392"}],"version-history":[{"count":13,"href":"https:\/\/flj-pcb.com\/cs\/wp-json\/wp\/v2\/pages\/2392\/revisions"}],"predecessor-version":[{"id":3439,"href":"https:\/\/flj-pcb.com\/cs\/wp-json\/wp\/v2\/pages\/2392\/revisions\/3439"}],"up":[{"embeddable":true,"href":"https:\/\/flj-pcb.com\/cs\/wp-json\/wp\/v2\/pages\/1898"}],"wp:attachment":[{"href":"https:\/\/flj-pcb.com\/cs\/wp-json\/wp\/v2\/media?parent=2392"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}