{"id":2439,"date":"2025-09-08T05:50:34","date_gmt":"2025-09-08T05:50:34","guid":{"rendered":"https:\/\/flj-pcb.com\/?page_id=2439"},"modified":"2025-09-26T02:21:26","modified_gmt":"2025-09-26T02:21:26","slug":"half-hole-process","status":"publish","type":"page","link":"https:\/\/flj-pcb.com\/da\/pcb-manufacturer\/half-hole-process\/","title":{"rendered":"PCB med halvt hul: Tips til design og fremstilling"},"content":{"rendered":"<div data-elementor-type=\"wp-page\" data-elementor-id=\"2439\" class=\"elementor elementor-2439\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-57c7fef e-flex e-con-boxed e-con e-parent\" data-id=\"57c7fef\" 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-22c756f elementor-widget elementor-widget-text-editor\" data-id=\"22c756f\" 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 data-start=\"46\" data-end=\"62\">Oversigt<\/h2><p data-start=\"63\" data-end=\"325\">Elektroniske produkter stiller st\u00f8rre krav til printpladerne. Antallet af dele p\u00e5 printet vokser hurtigt. Delst\u00f8rrelserne bliver mindre. Halvhulsprintkort bruges mere og mere, fordi de er nemme at lodde, tager lidt modulareal og underst\u00f8tter mange funktioner.<\/p><p data-start=\"63\" data-end=\"325\"><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone wp-image-2758 size-full\" src=\"https:\/\/flj-pcb.com\/wp-content\/uploads\/2025\/08\/Half-Hole-PCBs.webp\" alt=\"half-hole PCB\" width=\"500\" height=\"455\" srcset=\"https:\/\/flj-pcb.com\/wp-content\/uploads\/2025\/08\/Half-Hole-PCBs.webp 500w, https:\/\/flj-pcb.com\/wp-content\/uploads\/2025\/08\/Half-Hole-PCBs-300x273.webp 300w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/p><h2 data-start=\"327\" data-end=\"358\">Hvad er et PCB med halvt hul?<\/h2><p data-start=\"359\" data-end=\"837\">Et halvt metalhul (eller en halv slids) laves ved f\u00f8rst at <a href=\"https:\/\/www.protoexpress.com\/blog\/no-chilling-when-it-comes-to-pcb-drilling\/\" target=\"_blank\" rel=\"noopener\">Boring<\/a> og metallisere et hul og derefter bore eller fr\u00e6se igen for at sk\u00e6re hullet midt over. Kort sagt er det et metalliseret hul ved printkanten, der er sk\u00e5ret midt over. Processen med halvmetallicerede huller i kanten er moden. I printkortindustrien kaldes det ogs\u00e5 et \u201cfrim\u00e6rkehul\u201d. Du kan lodde hulkanten direkte p\u00e5 hovedkortet. Det sparer stik og plads. Man ser det ofte i signalkredsl\u00f8b. De fleste modul-PCB'er bruger halve huller.<\/p><h3 data-start=\"839\" data-end=\"892\">Karakteristik af metalliserede halvhuls-PCB'er<\/h3><ul data-start=\"893\" data-end=\"1094\"><li data-start=\"893\" data-end=\"922\"><p data-start=\"895\" data-end=\"922\">Den enkelte enhed er lille.<\/p><\/li><li data-start=\"923\" data-end=\"1094\"><p data-start=\"925\" data-end=\"1094\">Enhedens kant har en r\u00e6kke metalliserede halve huller. Denne enhed er et subboard af et parent board. De metalliserede halvhuller loddes til moderkortet og til komponentledninger.<\/p><\/li><\/ul><p><img decoding=\"async\" class=\"alignnone wp-image-2755 size-full\" src=\"https:\/\/flj-pcb.com\/wp-content\/uploads\/2025\/08\/Characteristics-of-metallized-half-hole-PCBs.webp\" alt=\"Characteristics of metallized half hole PCBs\" width=\"589\" height=\"356\" srcset=\"https:\/\/flj-pcb.com\/wp-content\/uploads\/2025\/08\/Characteristics-of-metallized-half-hole-PCBs.webp 589w, https:\/\/flj-pcb.com\/wp-content\/uploads\/2025\/08\/Characteristics-of-metallized-half-hole-PCBs-300x181.webp 300w\" sizes=\"(max-width: 589px) 100vw, 589px\" \/><\/p><h2 data-start=\"1096\" data-end=\"1139\">Fordele ved halvhulsprocessen<\/h2><ul data-start=\"1140\" data-end=\"2093\"><li data-start=\"1140\" data-end=\"1324\"><p data-start=\"1142\" data-end=\"1324\"><strong data-start=\"1142\" data-end=\"1168\">\u00d8g styrken p\u00e5 puderne.<\/strong> Halvhulsdesignet styrker kantpuden mekanisk. I modul\u00e6re printkort forbedrer det lodningens p\u00e5lidelighed. Den passer til anvendelser med h\u00f8j densitet og h\u00f8j vibration.<\/p><\/li><li data-start=\"1325\" data-end=\"1577\"><p data-start=\"1327\" data-end=\"1577\"><strong data-start=\"1327\" data-end=\"1353\">Optimer pladsinddelingen.<\/strong> Med halve huller kan du placere dele mere fleksibelt og bruge mindre plads. I et Wi-Fi-modul kan du f.eks. lodde det halve hul i kanten direkte p\u00e5 hovedkortet og reducere produkttykkelsen med ca. 60%. Dette passer til tynde enheder.<\/p><\/li><li data-start=\"1578\" data-end=\"1802\"><p data-start=\"1580\" data-end=\"1802\"><strong data-start=\"1580\" data-end=\"1604\">Forenkle produktionen.<\/strong> Processen kr\u00e6ver ekstra trin tidligt i forl\u00f8bet (f.eks. kobberbel\u00e6gning og pr\u00e6cis singulering), men alt i alt er det mere effektivt end at bruge traditionelle stik. Man undg\u00e5r ogs\u00e5 at skulle k\u00f8be stik.<img decoding=\"async\" class=\"alignnone size-full wp-image-2757\" src=\"https:\/\/flj-pcb.com\/wp-content\/uploads\/2025\/08\/half-hole-Simplify-production.webp\" alt=\"\" width=\"600\" height=\"338\" srcset=\"https:\/\/flj-pcb.com\/wp-content\/uploads\/2025\/08\/half-hole-Simplify-production.webp 600w, https:\/\/flj-pcb.com\/wp-content\/uploads\/2025\/08\/half-hole-Simplify-production-300x169.webp 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/p><\/li><li data-start=\"1803\" data-end=\"1917\"><p data-start=\"1805\" data-end=\"1917\"><strong data-start=\"1805\" data-end=\"1828\">Forbedre udseendet.<\/strong> Halve huller i kanten f\u00e5r printkortet til at se renere ud. Dette opfylder moderne behov for produktudseende.<\/p><\/li><li data-start=\"1918\" data-end=\"2093\"><p data-start=\"1920\" data-end=\"2093\"><strong data-start=\"1920\" data-end=\"1951\">Forbedre signalets ydeevne.<\/strong> I h\u00f8jfrekvente tilf\u00e6lde (f.eks. 5G) kan halvhuller s\u00e6nke den parasit\u00e6re kapacitans og reducere signaltabet. Det \u00f8ger transmissionseffektiviteten.<\/p><\/li><\/ul><h2 data-start=\"2095\" data-end=\"2126\">Problemer med behandlingen<\/h2><ol data-start=\"2127\" data-end=\"3157\"><li data-start=\"2127\" data-end=\"2357\"><p data-start=\"2130\" data-end=\"2357\">Efter formning viser metalliserede PCB'er med halve huller ofte problemer med kobberet i hulv\u00e6ggen. Disse omfatter kobberl\u00f8ft, m\u00f8rkt kobber, rester af grater og forskydning. Disse problemer er en almindelig udfordring for printkortproducenter i formningstrinnet.<\/p><\/li><li data-start=\"2358\" data-end=\"2604\"><p data-start=\"2361\" data-end=\"2604\">En hel r\u00e6kke af frim\u00e6rkelignende halve huller er s\u00e6rlig h\u00e5rd. Hulst\u00f8rrelsen er ca. 0,6 mm. Afstanden mellem hul og v\u00e6g er ca. 0,45 mm. Det ydre lags m\u00f8nsterafstand er ca. 2 mm. De sm\u00e5 mellemrum g\u00f8r det nemt at lave kortslutninger p\u00e5 grund af kobberhuden.<\/p><\/li><li data-start=\"2605\" data-end=\"3157\"><p data-start=\"2608\" data-end=\"3157\">Almindelige formningsmetoder til metalliserede PCB'er med halve huller omfatter CNC-fr\u00e6sning (router), mekanisk stansning og V-cut. N\u00e5r disse metoder fjerner un\u00f8dvendige dele af de belagte huller, efterlader de ofte kobbertr\u00e5de og grater p\u00e5 de udsk\u00e5rne PTH-kanter (plated through hole). I alvorlige tilf\u00e6lde kan kobberet p\u00e5 hulv\u00e6ggen l\u00f8fte sig eller skalle af. Under formningen kan PCB-udvidelse, n\u00f8jagtighed i boreposition og formningspr\u00e6cision ogs\u00e5 medf\u00f8re, at de halve huller til venstre og h\u00f8jre for den samme enhed er meget forskellige i st\u00f8rrelse. Det g\u00f8r det sv\u00e6rt for kunderne at lodde og montere.<\/p><\/li><\/ol><h2 data-start=\"3159\" data-end=\"3207\">V\u00e6rd at vide om PCB-processen med halve huller<\/h2><ul data-start=\"3208\" data-end=\"3417\"><li data-start=\"3208\" data-end=\"3417\"><p data-start=\"3210\" data-end=\"3417\">Alle metalliserede PCB-hulpositioner med halve huller skal bores efter billeddannelse\/plettering (eller efter m\u00f8nsterplettering) og f\u00f8r \u00e6tsning, s\u00e5 krydsningspunkterne i hver ende af det halve hul har et boret hul.<\/p><\/li><\/ul><ol data-start=\"3419\" data-end=\"4207\"><li data-start=\"3419\" data-end=\"3528\"><p data-start=\"3422\" data-end=\"3528\">Ingeni\u00f8rafdelingen skal indstille MI-flowet (produktionsinstruktionen) for halvhulsprocessen.<\/p><\/li><li data-start=\"3529\" data-end=\"3780\"><p data-start=\"3532\" data-end=\"3780\">For halvhuller i metal, der er dannet ved f\u00f8rst at bore (eller fr\u00e6se), s\u00e5 m\u00f8nsterplettering og derefter endnu en boring f\u00f8r \u00e6tsning, skal du overveje, om fr\u00e6sning af den ydre form vil blotl\u00e6gge kobber. Flyt det borede halve hul ind mod enhedens indre, hvis det er n\u00f8dvendigt.<\/p><\/li><li data-start=\"3781\" data-end=\"4026\"><p data-start=\"3784\" data-end=\"4026\">Til hullet i h\u00f8jre side (boret halvt hul):<br data-start=\"3828\" data-end=\"3831\" \/>a. Bor det f\u00f8rst, vend derefter br\u00e6ttet (eller spejlvend det) og bor hullet i venstre side.<br data-start=\"3917\" data-end=\"3920\" \/>b. Dette reducerer borekronens tr\u00e6k p\u00e5 hullets kobber og undg\u00e5r kobbertab inde i det halve hul.<\/p><\/li><li data-start=\"4027\" data-end=\"4109\"><p data-start=\"4030\" data-end=\"4109\">Borest\u00f8rrelsen for det halve hul afh\u00e6nger af afstanden til konturlinjen.<\/p><\/li><li data-start=\"4110\" data-end=\"4207\"><p data-start=\"4113\" data-end=\"4207\">Tegn loddemaskefilmen. For fr\u00e6sede \u00e5bninger skal du tilf\u00f8je stop-punkter og forst\u00f8rre vinduer med 4 mil.<\/p><\/li><\/ol><h2 data-start=\"4209\" data-end=\"4229\">Procesforl\u00f8b<\/h2><p data-start=\"4230\" data-end=\"4394\">Et halvt hul er et metalliseret hul, der er sk\u00e5ret midt over. Det ser enkelt ud, fordi du m\u00e5ske tror, at du kun beh\u00f8ver at fr\u00e6se omridset p\u00e5 en normal plade. Men det er faktisk ikke s\u00e5 enkelt.<\/p><ol data-start=\"4396\" data-end=\"5929\"><li data-start=\"4396\" data-end=\"4463\"><p data-start=\"4399\" data-end=\"4463\">Fr\u00e6s de halve kanthuller ved hj\u00e6lp af en dobbelt V-formet sk\u00e6rebane.<\/p><\/li><li data-start=\"4464\" data-end=\"4653\"><p data-start=\"4467\" data-end=\"4653\">Til den anden boring tilf\u00f8jes styrehuller ved den \u00f8delagte hulkant. Fjern kobberhuden tidligt for at reducere grater. Skift fra lige bor til notfr\u00e6ser, og optimer spindelhastighed og fremf\u00f8ring.<\/p><\/li><li data-start=\"4654\" data-end=\"4757\"><p data-start=\"4657\" data-end=\"4757\">P\u00e5f\u00f8r kobberbel\u00e6gning p\u00e5 pladen, s\u00e5 de runde hulv\u00e6gge ved pladekanten f\u00e5r et lag kobber.<\/p><\/li><li data-start=\"4758\" data-end=\"5001\"><p data-start=\"4761\" data-end=\"5001\">Lav det ydre lags kredsl\u00f8b ved at laminere, eksponere og fremkalde. Lav derefter endnu en kobber- og tinbel\u00e6gning, s\u00e5 kobberlaget p\u00e5 de runde hulv\u00e6gge i kanten bliver tykkere og d\u00e6kket af et tinlag, der er modstandsdygtigt over for \u00e6tsning.<\/p><\/li><li data-start=\"5002\" data-end=\"5078\"><p data-start=\"5005\" data-end=\"5078\">Form det halve hul ved at sk\u00e6re det runde hul ved pladekanten midt over.<\/p><\/li><li data-start=\"5079\" data-end=\"5141\"><p data-start=\"5082\" data-end=\"5141\">Fjern den resistfilm, der blev presset under lamineringen.<\/p><\/li><li data-start=\"5142\" data-end=\"5218\"><p data-start=\"5145\" data-end=\"5218\">\u00c6ts printet for at fjerne det blottede ydre kobber, der er tilbage efter strippingen.<\/p><\/li><li data-start=\"5219\" data-end=\"5298\"><p data-start=\"5222\" data-end=\"5298\">Fjern tin p\u00e5 pladen, s\u00e5 kobberet p\u00e5 v\u00e6ggen med det halve hul er blottet.<\/p><\/li><li data-start=\"5299\" data-end=\"5410\"><p data-start=\"5302\" data-end=\"5410\">Brug r\u00f8d tape til at holde pladerne sammen efter formningen. F\u00f8r dem gennem alkalisk \u00e6tsning for at fjerne grater.<\/p><\/li><li data-start=\"5411\" data-end=\"5715\"><p data-start=\"5415\" data-end=\"5715\">N\u00e5r printet har f\u00e5et endnu en kobber- og tinbel\u00e6gning, sk\u00e6res det runde kanthul midt over for at lave et halvt hul. Fordi kobberet i hulv\u00e6ggen er d\u00e6kket af tin, og kobberet i hulv\u00e6ggen er fuldt forbundet med kobberet i det ydre lag, er bindingen st\u00e6rk. Ved at sk\u00e6re undg\u00e5r man, at kobberet l\u00f8fter sig eller skaller af.<\/p><\/li><li data-start=\"5716\" data-end=\"5929\"><p data-start=\"5720\" data-end=\"5929\">N\u00e5r halvhulsdannelsen er f\u00e6rdig, skal du fjerne resisten og derefter \u00e6tse. Det forhindrer oxidering af kobberoverfladen og undg\u00e5r kobberrester eller endda kortslutninger. Det \u00f8ger udbyttet for metalliserede halvhuls-PCB'er.<\/p><\/li><\/ol>\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-4jc7z5m elementor-section-content-top elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"4jc7z5m\" 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\">Ofte stillede sp\u00f8rgsm\u00e5l<\/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\">Hvad er et PCB med halve huller (castellated)?<\/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>Et halvt hul (castellated) er et pletteret gennemg\u00e5ende hul, der er fr\u00e6set eller fr\u00e6set, s\u00e5 kun halvdelen af hullet er tilbage ved printkanten. Det skaber en halvcirkelformet belagt pad, der bruges til lodning af moduler eller board-to-board-forbindelser.<\/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\">Hvordan fremstilles belagte halve huller (procesoversigt)?<\/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>I produktionen borer man typisk fuldpletterede huller, pletterer dem og profilerer (fr\u00e6ser) derefter pladekanten for at blotl\u00e6gge halvdelen af hvert pletteret hul. Resultatet er en belagt halvcirkelformet pude langs kanten.<\/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\">Hvad er de vigtigste anvendelser af halve huller?<\/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>Almindelige anvendelser: moduludbrydningskort (Bluetooth\/Wi-Fi-moduler), loddeforbindelser fra kort til kort, kompakte modul\u00e6re systemer og situationer, hvor stik skal elimineres.<\/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\">Typiske minimumsst\u00f8rrelser og mellemrum - hvad kan man forvente?<\/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>Ja - de bruges i vid udstr\u00e6kning til kompakte moduler og fine breakout boards, men designet skal tage h\u00f8jde for pad-st\u00f8rrelse, loddefileter og lodde-reflow-adf\u00e6rd.<\/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\">Hvordan skal jeg levere filer til producenten?<\/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>Inkluder Gerber + borefiler (PTH), mark\u00e9r tydeligt kastellerede huller i mekaniske lag eller noter, angiv den \u00f8nskede finish (f.eks. ENIG), og bed om fabrikkens DFM-feedback.<\/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>Overview Electronic products place higher demands on printed circuit boards. Parts on the board grow rapidly in number. The part 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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\":\"57c7fef\",\"elType\":\"container\",\"settings\":{\"display_condition_list\":[{\"display_condition_login_status\":\"subscriber\",\"_id\":\"0c217f1\"}]},\"elements\":[{\"id\":\"22c756f\",\"elType\":\"widget\",\"settings\":{\"editor\":\"<h2 data-start=\\\"46\\\" data-end=\\\"62\\\">Overview<\\\/h2><p data-start=\\\"63\\\" data-end=\\\"325\\\">Electronic products place higher demands on printed circuit boards. Parts on the board grow rapidly in number. The part sizes get smaller. Half-hole PCBs are used more and more because they are easy to solder, take little module area, and support many functions.<\\\/p><p data-start=\\\"63\\\" data-end=\\\"325\\\"><img class=\\\"alignnone wp-image-2758 size-full\\\" src=\\\"https:\\\/\\\/flj-pcb.com\\\/wp-content\\\/uploads\\\/2025\\\/08\\\/Half-Hole-PCBs.webp\\\" alt=\\\"half-hole PCB\\\" width=\\\"500\\\" height=\\\"455\\\" \\\/><\\\/p><h2 data-start=\\\"327\\\" data-end=\\\"358\\\">What is a half-hole PCB<\\\/h2><p data-start=\\\"359\\\" data-end=\\\"837\\\">A metal half-hole (or half-slot) is made by first <a href=\\\"https:\\\/\\\/www.protoexpress.com\\\/blog\\\/no-chilling-when-it-comes-to-pcb-drilling\\\/\\\">drilling<\\\/a> and metallizing a hole, then drilling or routing again to cut the hole in half. Simply put, it is a metallized hole at the board edge cut in half. The edge half-metallized hole process is mature. In the PCB industry this is also called a \\u201cpostage-stamp hole.\\u201d You can solder the hole edge directly to the main board. This saves connectors and space. You often see it in signal circuits. Most module PCBs use half-holes.<\\\/p><h3 data-start=\\\"839\\\" data-end=\\\"892\\\">Characteristics of metallized half-hole PCBs<\\\/h3><ul data-start=\\\"893\\\" data-end=\\\"1094\\\"><li data-start=\\\"893\\\" data-end=\\\"922\\\"><p data-start=\\\"895\\\" data-end=\\\"922\\\">The single unit is small.<\\\/p><\\\/li><li data-start=\\\"923\\\" data-end=\\\"1094\\\"><p data-start=\\\"925\\\" data-end=\\\"1094\\\">The unit edge has a row of metallized half-holes. This unit is a subboard of a parent board. The metallized half-holes solder to the parent board and to component leads.<\\\/p><\\\/li><\\\/ul><p><img class=\\\"alignnone wp-image-2755 size-full\\\" src=\\\"https:\\\/\\\/flj-pcb.com\\\/wp-content\\\/uploads\\\/2025\\\/08\\\/Characteristics-of-metallized-half-hole-PCBs.webp\\\" alt=\\\"Characteristics of metallized half hole PCBs\\\" width=\\\"589\\\" height=\\\"356\\\" \\\/><\\\/p><h2 data-start=\\\"1096\\\" data-end=\\\"1139\\\">Advantages of the half-hole process<\\\/h2><ul data-start=\\\"1140\\\" data-end=\\\"2093\\\"><li data-start=\\\"1140\\\" data-end=\\\"1324\\\"><p data-start=\\\"1142\\\" data-end=\\\"1324\\\"><strong data-start=\\\"1142\\\" data-end=\\\"1168\\\">Increase pad strength.<\\\/strong> The half-hole design strengthens the edge pad mechanically. In modular PCBs it improves solder reliability. It fits high-density and high-vibration uses.<\\\/p><\\\/li><li data-start=\\\"1325\\\" data-end=\\\"1577\\\"><p data-start=\\\"1327\\\" data-end=\\\"1577\\\"><strong data-start=\\\"1327\\\" data-end=\\\"1353\\\">Optimize space layout.<\\\/strong> Half-holes let you place parts more flexibly and use less space. For example, in a Wi-Fi module you can solder the edge half-hole directly to the main board and cut product thickness by about 60%. This suits thin devices.<\\\/p><\\\/li><li data-start=\\\"1578\\\" data-end=\\\"1802\\\"><p data-start=\\\"1580\\\" data-end=\\\"1802\\\"><strong data-start=\\\"1580\\\" data-end=\\\"1604\\\">Simplify production.<\\\/strong> The process needs extra steps early on (for example, copper plating and precise singulation), but overall it is more efficient than using traditional connectors. It also avoids buying connectors.<img class=\\\"alignnone size-full wp-image-2757\\\" src=\\\"https:\\\/\\\/flj-pcb.com\\\/wp-content\\\/uploads\\\/2025\\\/08\\\/half-hole-Simplify-production.webp\\\" alt=\\\"\\\" width=\\\"600\\\" height=\\\"338\\\" \\\/><\\\/p><\\\/li><li data-start=\\\"1803\\\" data-end=\\\"1917\\\"><p data-start=\\\"1805\\\" data-end=\\\"1917\\\"><strong data-start=\\\"1805\\\" data-end=\\\"1828\\\">Improve appearance.<\\\/strong> Edge half-holes make the PCB look cleaner. This meets modern product appearance needs.<\\\/p><\\\/li><li data-start=\\\"1918\\\" data-end=\\\"2093\\\"><p data-start=\\\"1920\\\" data-end=\\\"2093\\\"><strong data-start=\\\"1920\\\" data-end=\\\"1951\\\">Enhance signal performance.<\\\/strong> In high-frequency cases (for example 5G) half-holes can lower parasitic capacitance and cut signal loss. This raises transmission efficiency.<\\\/p><\\\/li><\\\/ul><h2 data-start=\\\"2095\\\" data-end=\\\"2126\\\">Processing difficulties<\\\/h2><ol data-start=\\\"2127\\\" data-end=\\\"3157\\\"><li data-start=\\\"2127\\\" data-end=\\\"2357\\\"><p data-start=\\\"2130\\\" data-end=\\\"2357\\\">After forming, metallized half-hole PCBs often show problems in the hole wall copper. These include copper lift, dark copper, leftover burrs, and offset. These issues are a common challenge for PCB makers in the forming step.<\\\/p><\\\/li><li data-start=\\\"2358\\\" data-end=\\\"2604\\\"><p data-start=\\\"2361\\\" data-end=\\\"2604\\\">A full row of postage-stamp-like half-holes is especially hard. The hole size is about 0.6 mm. The hole-wall gap is about 0.45 mm. The outer layer pattern spacing is about 2 mm. The small gaps make short circuits easy because of copper skin.<\\\/p><\\\/li><li data-start=\\\"2605\\\" data-end=\\\"3157\\\"><p data-start=\\\"2608\\\" data-end=\\\"3157\\\">Common forming methods for metallized half-hole PCBs include CNC milling (router), mechanical punching, and V-cut. When these methods remove unneeded parts of the plated holes, they often leave copper threads and burrs on the cut PTH (plated through hole) edges. In serious cases the hole wall copper can lift or peel off. Also, during forming, PCB expansion, drill position accuracy, and forming precision can cause the half-holes on the left and right of the same unit to differ a lot in size. This makes soldering and assembly hard for customers.<\\\/p><\\\/li><\\\/ol><h2 data-start=\\\"3159\\\" data-end=\\\"3207\\\">Points to note for half-hole PCB process<\\\/h2><ul data-start=\\\"3208\\\" data-end=\\\"3417\\\"><li data-start=\\\"3208\\\" data-end=\\\"3417\\\"><p data-start=\\\"3210\\\" data-end=\\\"3417\\\">All metallized half-hole PCB hole positions must be drilled after imaging\\\/plating (or after pattern plating), and before etching, so that at each end of the half-hole the crossing points have a drilled hole.<\\\/p><\\\/li><\\\/ul><ol data-start=\\\"3419\\\" data-end=\\\"4207\\\"><li data-start=\\\"3419\\\" data-end=\\\"3528\\\"><p data-start=\\\"3422\\\" data-end=\\\"3528\\\">The engineering department should set the MI (manufacturing instruction) flow for the half-hole process.<\\\/p><\\\/li><li data-start=\\\"3529\\\" data-end=\\\"3780\\\"><p data-start=\\\"3532\\\" data-end=\\\"3780\\\">For metal half-holes that are formed by first drilling (or routing), then pattern plating, then a second drill before etch, think about whether outer shape routing will expose copper. Move the drilled half-hole toward the unit interior if needed.<\\\/p><\\\/li><li data-start=\\\"3781\\\" data-end=\\\"4026\\\"><p data-start=\\\"3784\\\" data-end=\\\"4026\\\">For the right-side hole (drilled half-hole):<br data-start=\\\"3828\\\" data-end=\\\"3831\\\" \\\/>a. Drill it first, then flip the board (or mirror it) and drill the left-side hole.<br data-start=\\\"3917\\\" data-end=\\\"3920\\\" \\\/>b. This reduces the drill bit pulling on the hole copper and avoids copper loss inside the half-hole.<\\\/p><\\\/li><li data-start=\\\"4027\\\" data-end=\\\"4109\\\"><p data-start=\\\"4030\\\" data-end=\\\"4109\\\">The drill size for the half-hole depends on the distance to the outline line.<\\\/p><\\\/li><li data-start=\\\"4110\\\" data-end=\\\"4207\\\"><p data-start=\\\"4113\\\" data-end=\\\"4207\\\">Draw the solder mask film. For routed openings, add stop points and enlarge windows by 4 mils.<\\\/p><\\\/li><\\\/ol><h2 data-start=\\\"4209\\\" data-end=\\\"4229\\\">Process flow<\\\/h2><p data-start=\\\"4230\\\" data-end=\\\"4394\\\">A half-hole is a metallized hole cut in half. It looks simple because you might think you only need to mill the outline on a normal board. In fact it is not simple.<\\\/p><ol data-start=\\\"4396\\\" data-end=\\\"5929\\\"><li data-start=\\\"4396\\\" data-end=\\\"4463\\\"><p data-start=\\\"4399\\\" data-end=\\\"4463\\\">Mill the half edge holes using a double V-shaped cutting path.<\\\/p><\\\/li><li data-start=\\\"4464\\\" data-end=\\\"4653\\\"><p data-start=\\\"4467\\\" data-end=\\\"4653\\\">For the second drill, add guide holes at the broken hole edge. Remove copper skin early to reduce burrs. Switch from straight drill to slot cutter, and optimize spindle speed and feed.<\\\/p><\\\/li><li data-start=\\\"4654\\\" data-end=\\\"4757\\\"><p data-start=\\\"4657\\\" data-end=\\\"4757\\\">Apply copper plating to the board so the round hole walls at the board edge get a layer of copper.<\\\/p><\\\/li><li data-start=\\\"4758\\\" data-end=\\\"5001\\\"><p data-start=\\\"4761\\\" data-end=\\\"5001\\\">Make the outer layer circuit by laminating, exposing, and developing. Then do a second copper plating and tin plating so the copper layer on the round hole walls at the edge gets thicker and is covered by a tin layer that resists etching.<\\\/p><\\\/li><li data-start=\\\"5002\\\" data-end=\\\"5078\\\"><p data-start=\\\"5005\\\" data-end=\\\"5078\\\">Form the half-hole by cutting the round hole at the board edge in half.<\\\/p><\\\/li><li data-start=\\\"5079\\\" data-end=\\\"5141\\\"><p data-start=\\\"5082\\\" data-end=\\\"5141\\\">Strip the resist film that was pressed during lamination.<\\\/p><\\\/li><li data-start=\\\"5142\\\" data-end=\\\"5218\\\"><p data-start=\\\"5145\\\" data-end=\\\"5218\\\">Etch the board to remove the exposed outer copper left after stripping.<\\\/p><\\\/li><li data-start=\\\"5219\\\" data-end=\\\"5298\\\"><p data-start=\\\"5222\\\" data-end=\\\"5298\\\">Strip the tin on the board so the copper on the half-hole wall is exposed.<\\\/p><\\\/li><li data-start=\\\"5299\\\" data-end=\\\"5410\\\"><p data-start=\\\"5302\\\" data-end=\\\"5410\\\">After forming, use red tape to hold unit boards together. Pass them through alkaline etch to remove burrs.<\\\/p><\\\/li><li data-start=\\\"5411\\\" data-end=\\\"5715\\\"><p data-start=\\\"5415\\\" data-end=\\\"5715\\\">After the board gets a second copper plating and tin plating, cut the round edge hole in half to make the half-hole. Because the hole wall copper is covered by tin and the hole wall copper is fully connected to the outer layer copper, the bond is strong. Cutting then avoids copper lift or peeling.<\\\/p><\\\/li><li data-start=\\\"5716\\\" data-end=\\\"5929\\\"><p data-start=\\\"5720\\\" data-end=\\\"5929\\\">After the half-hole forming is done, strip the resist and then etch. This prevents copper surface oxidation and avoids leftover copper or even short circuits. 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class=\\\"elementor-element elementor-element-57c7fef e-flex e-con-boxed e-con e-parent\\\" data-id=\\\"57c7fef\\\" data-element_type=\\\"container\\\">\\n\\t\\t\\t\\t\\t<div class=\\\"e-con-inner\\\">\\n\\t\\t[elementor-element k=\\\"0e46bd9387093ca73b9000e38f18cce4\\\" data=\\\"{"id":"22c756f","elType":"widget","settings":{"editor":"<h2 data-start=\"46\" data-end=\"62\">Overview<\/h2><p data-start=\"63\" data-end=\"325\">Electronic products place higher demands on printed circuit boards. Parts on the board grow rapidly in number. The part sizes get smaller. Half-hole PCBs are used more and more because they are easy to solder, take little module area, and support many functions.<\/p><p data-start=\"63\" data-end=\"325\"><img class=\"alignnone wp-image-2758 size-full\" src=\"https:\/\/flj-pcb.com\/wp-content\/uploads\/2025\/08\/Half-Hole-PCBs.webp\" alt=\"half-hole PCB\" width=\"500\" height=\"455\" \/><\/p><h2 data-start=\"327\" data-end=\"358\">What is a half-hole PCB<\/h2><p data-start=\"359\" data-end=\"837\">A metal half-hole (or half-slot) is made by first <a href=\"https:\/\/www.protoexpress.com\/blog\/no-chilling-when-it-comes-to-pcb-drilling\/\">drilling<\/a> and metallizing a hole, then drilling or routing again to cut the hole in half. Simply put, it is a metallized hole at the board edge cut in half. The edge half-metallized hole process is mature. In the PCB industry this is also called a \u201cpostage-stamp hole.\u201d You can solder the hole edge directly to the main board. This saves connectors and space. You often see it in signal circuits. Most module PCBs use half-holes.<\/p><h3 data-start=\"839\" data-end=\"892\">Characteristics of metallized half-hole PCBs<\/h3><ul data-start=\"893\" data-end=\"1094\"><li data-start=\"893\" data-end=\"922\"><p data-start=\"895\" data-end=\"922\">The single unit is small.<\/p><\/li><li data-start=\"923\" data-end=\"1094\"><p data-start=\"925\" data-end=\"1094\">The unit edge has a row of metallized half-holes. This unit is a subboard of a parent board. The metallized half-holes solder to the parent board and to component leads.<\/p><\/li><\/ul><p><img class=\"alignnone wp-image-2755 size-full\" src=\"https:\/\/flj-pcb.com\/wp-content\/uploads\/2025\/08\/Characteristics-of-metallized-half-hole-PCBs.webp\" alt=\"Characteristics of metallized half hole PCBs\" width=\"589\" height=\"356\" \/><\/p><h2 data-start=\"1096\" data-end=\"1139\">Advantages of the half-hole process<\/h2><ul data-start=\"1140\" data-end=\"2093\"><li data-start=\"1140\" data-end=\"1324\"><p data-start=\"1142\" data-end=\"1324\"><strong data-start=\"1142\" data-end=\"1168\">Increase pad strength.<\/strong> The half-hole design strengthens the edge pad mechanically. In modular PCBs it improves solder reliability. It fits high-density and high-vibration uses.<\/p><\/li><li data-start=\"1325\" data-end=\"1577\"><p data-start=\"1327\" data-end=\"1577\"><strong data-start=\"1327\" data-end=\"1353\">Optimize space layout.<\/strong> Half-holes let you place parts more flexibly and use less space. For example, in a Wi-Fi module you can solder the edge half-hole directly to the main board and cut product thickness by about 60%. This suits thin devices.<\/p><\/li><li data-start=\"1578\" data-end=\"1802\"><p data-start=\"1580\" data-end=\"1802\"><strong data-start=\"1580\" data-end=\"1604\">Simplify production.<\/strong> The process needs extra steps early on (for example, copper plating and precise singulation), but overall it is more efficient than using traditional connectors. It also avoids buying connectors.<img class=\"alignnone size-full wp-image-2757\" src=\"https:\/\/flj-pcb.com\/wp-content\/uploads\/2025\/08\/half-hole-Simplify-production.webp\" alt=\"\" width=\"600\" height=\"338\" \/><\/p><\/li><li data-start=\"1803\" data-end=\"1917\"><p data-start=\"1805\" data-end=\"1917\"><strong data-start=\"1805\" data-end=\"1828\">Improve appearance.<\/strong> Edge half-holes make the PCB look cleaner. This meets modern product appearance needs.<\/p><\/li><li data-start=\"1918\" data-end=\"2093\"><p data-start=\"1920\" data-end=\"2093\"><strong data-start=\"1920\" data-end=\"1951\">Enhance signal performance.<\/strong> In high-frequency cases (for example 5G) half-holes can lower parasitic capacitance and cut signal loss. This raises transmission efficiency.<\/p><\/li><\/ul><h2 data-start=\"2095\" data-end=\"2126\">Processing difficulties<\/h2><ol data-start=\"2127\" data-end=\"3157\"><li data-start=\"2127\" data-end=\"2357\"><p data-start=\"2130\" data-end=\"2357\">After forming, metallized half-hole PCBs often show problems in the hole wall copper. These include copper lift, dark copper, leftover burrs, and offset. These issues are a common challenge for PCB makers in the forming step.<\/p><\/li><li data-start=\"2358\" data-end=\"2604\"><p data-start=\"2361\" data-end=\"2604\">A full row of postage-stamp-like half-holes is especially hard. The hole size is about 0.6 mm. The hole-wall gap is about 0.45 mm. The outer layer pattern spacing is about 2 mm. The small gaps make short circuits easy because of copper skin.<\/p><\/li><li data-start=\"2605\" data-end=\"3157\"><p data-start=\"2608\" data-end=\"3157\">Common forming methods for metallized half-hole PCBs include CNC milling (router), mechanical punching, and V-cut. When these methods remove unneeded parts of the plated holes, they often leave copper threads and burrs on the cut PTH (plated through hole) edges. In serious cases the hole wall copper can lift or peel off. Also, during forming, PCB expansion, drill position accuracy, and forming precision can cause the half-holes on the left and right of the same unit to differ a lot in size. This makes soldering and assembly hard for customers.<\/p><\/li><\/ol><h2 data-start=\"3159\" data-end=\"3207\">Points to note for half-hole PCB process<\/h2><ul data-start=\"3208\" data-end=\"3417\"><li data-start=\"3208\" data-end=\"3417\"><p data-start=\"3210\" data-end=\"3417\">All metallized half-hole PCB hole positions must be drilled after imaging\/plating (or after pattern plating), and before etching, so that at each end of the half-hole the crossing points have a drilled hole.<\/p><\/li><\/ul><ol data-start=\"3419\" data-end=\"4207\"><li data-start=\"3419\" data-end=\"3528\"><p data-start=\"3422\" data-end=\"3528\">The engineering department should set the MI (manufacturing instruction) flow for the half-hole process.<\/p><\/li><li data-start=\"3529\" data-end=\"3780\"><p data-start=\"3532\" data-end=\"3780\">For metal half-holes that are formed by first drilling (or routing), then pattern plating, then a second drill before etch, think about whether outer shape routing will expose copper. Move the drilled half-hole toward the unit interior if needed.<\/p><\/li><li data-start=\"3781\" data-end=\"4026\"><p data-start=\"3784\" data-end=\"4026\">For the right-side hole (drilled half-hole):<br data-start=\"3828\" data-end=\"3831\" \/>a. Drill it first, then flip the board (or mirror it) and drill the left-side hole.<br data-start=\"3917\" data-end=\"3920\" \/>b. This reduces the drill bit pulling on the hole copper and avoids copper loss inside the half-hole.<\/p><\/li><li data-start=\"4027\" data-end=\"4109\"><p data-start=\"4030\" data-end=\"4109\">The drill size for the half-hole depends on the distance to the outline line.<\/p><\/li><li data-start=\"4110\" data-end=\"4207\"><p data-start=\"4113\" data-end=\"4207\">Draw the solder mask film. For routed openings, add stop points and enlarge windows by 4 mils.<\/p><\/li><\/ol><h2 data-start=\"4209\" data-end=\"4229\">Process flow<\/h2><p data-start=\"4230\" data-end=\"4394\">A half-hole is a metallized hole cut in half. It looks simple because you might think you only need to mill the outline on a normal board. In fact it is not simple.<\/p><ol data-start=\"4396\" data-end=\"5929\"><li data-start=\"4396\" data-end=\"4463\"><p data-start=\"4399\" data-end=\"4463\">Mill the half edge holes using a double V-shaped cutting path.<\/p><\/li><li data-start=\"4464\" data-end=\"4653\"><p data-start=\"4467\" data-end=\"4653\">For the second drill, add guide holes at the broken hole edge. Remove copper skin early to reduce burrs. Switch from straight drill to slot cutter, and optimize spindle speed and feed.<\/p><\/li><li data-start=\"4654\" data-end=\"4757\"><p data-start=\"4657\" data-end=\"4757\">Apply copper plating to the board so the round hole walls at the board edge get a layer of copper.<\/p><\/li><li data-start=\"4758\" data-end=\"5001\"><p data-start=\"4761\" data-end=\"5001\">Make the outer layer circuit by laminating, exposing, and developing. Then do a second copper plating and tin plating so the copper layer on the round hole walls at the edge gets thicker and is covered by a tin layer that resists etching.<\/p><\/li><li data-start=\"5002\" data-end=\"5078\"><p data-start=\"5005\" data-end=\"5078\">Form the half-hole by cutting the round hole at the board edge in half.<\/p><\/li><li data-start=\"5079\" data-end=\"5141\"><p data-start=\"5082\" data-end=\"5141\">Strip the resist film that was pressed during lamination.<\/p><\/li><li data-start=\"5142\" data-end=\"5218\"><p data-start=\"5145\" data-end=\"5218\">Etch the board to remove the exposed outer copper left after stripping.<\/p><\/li><li data-start=\"5219\" data-end=\"5298\"><p data-start=\"5222\" data-end=\"5298\">Strip the tin on the board so the copper on the half-hole wall is exposed.<\/p><\/li><li data-start=\"5299\" data-end=\"5410\"><p data-start=\"5302\" data-end=\"5410\">After forming, use red tape to hold unit boards together. Pass them through alkaline etch to remove burrs.<\/p><\/li><li data-start=\"5411\" data-end=\"5715\"><p data-start=\"5415\" data-end=\"5715\">After the board gets a second copper plating and tin plating, cut the round edge hole in half to make the half-hole. Because the hole wall copper is covered by tin and the hole wall copper is fully connected to the outer layer copper, the bond is strong. Cutting then avoids copper lift or peeling.<\/p><\/li><li data-start=\"5716\" data-end=\"5929\"><p data-start=\"5720\" data-end=\"5929\">After the half-hole forming is done, strip the resist and then etch. This prevents copper surface oxidation and avoids leftover copper or even short circuits. It raises the yield for metallized half-hole PCBs.<\/p><\/li><\/ol>","display_condition_list":[{"display_condition_login_status":"subscriber","_id":"d5db85f"}]},"elements":[],"widgetType":"text-editor"}\\\"]\\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-4jc7z5m elementor-section-content-top elementor-section-boxed elementor-section-height-default elementor-section-height-default\\\" data-id=\\\"4jc7z5m\\\" 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\\\">What is a half-hole (castellated) 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>A half-hole (castellated) is a plated through-hole that is milled or routed so only half the hole remains at the board edge. It creates a semi-circular plated pad used for soldering modules or board-to-board connections.<\\\/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\\\">How are plated half-holes made (process overview)?<\\\/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>Manufacturing typically drills full plated holes, plates them, then profiles (mills) the board edge to expose half of each plated hole. The result is a plated semi-circular pad along the edge.<\\\/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\\\">What are the main applications of half-holes?<\\\/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>Common uses: module breakout boards (Bluetooth\\\/Wi-Fi modules), board-to-board solder connections, compact modular systems, and situations where connectors are to be eliminated.<\\\/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\\\">Typical minimum sizes and spacing \\u2014 what to expect?<\\\/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>Yes \\u2014 they are widely used for compact modules and fine-pitch breakout boards, but design must consider pad size, solder fillet, and solder-reflow behaviour.<\\\/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\\\">How should I provide files to the manufacturer?<\\\/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>Include Gerber + drill (PTH) files, clearly mark castellated holes in mechanical layer or notes, supply desired finish (e.g., ENIG), and request the fab\\u2019s DFM feedback.<\\\/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-2439.css"],"_uag_js_file_name":["uag-js-2439.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\/da\/author\/2475017442jygmail-com\/"},"uagb_comment_info":0,"uagb_excerpt":"Overview Electronic products place higher demands on printed circuit boards. Parts on the board grow rapidly in number. The part [&hellip;]","_links":{"self":[{"href":"https:\/\/flj-pcb.com\/da\/wp-json\/wp\/v2\/pages\/2439","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/flj-pcb.com\/da\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/flj-pcb.com\/da\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/flj-pcb.com\/da\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/flj-pcb.com\/da\/wp-json\/wp\/v2\/comments?post=2439"}],"version-history":[{"count":20,"href":"https:\/\/flj-pcb.com\/da\/wp-json\/wp\/v2\/pages\/2439\/revisions"}],"predecessor-version":[{"id":3375,"href":"https:\/\/flj-pcb.com\/da\/wp-json\/wp\/v2\/pages\/2439\/revisions\/3375"}],"up":[{"embeddable":true,"href":"https:\/\/flj-pcb.com\/da\/wp-json\/wp\/v2\/pages\/1898"}],"wp:attachment":[{"href":"https:\/\/flj-pcb.com\/da\/wp-json\/wp\/v2\/media?parent=2439"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}