Why BOM Is The Key Of PCB Assembly

BOM is an extensive list of raw materials, components and assemblies required to construct, manufacture or repair a product or service. A bill of materials usually appears in a hierarchical format, with the highest level displaying the finished product and the bottom level showing individual components and materials. There are different types of bills of materials specific to engineering used in the design process and specific to manufacturing used in the assembling process.

Here's an example of complete BOM files As Below

In electronics, the BOM represents the list of components used on the printed wiring board or printed circuit board. Once the design of the circuit is completed, the BOM list is passed on to the PCB layout engineer as well as component engineer who will procure the components required for the design.

A BOM can define products as they are designed (engineering bill of materials), as they are ordered (sales bill of materials), as they are built (manufacturing bill of materials), or as they are maintained (service bill of materials or pseudo bill of material). The different types of BOMs depend on the business need and use for which they are intended. In process industries, the BOM is also known as the formula, recipe, or ingredients list. The phrase "bill of material" (or BOM) is frequently used by engineers as an adjective to refer not to the literal bill, but to the current production configuration of a product, to distinguish it from modified or improved versions under study or in test.

How to make your BOM contribute to your Project:
A BOM list reduces possible issues if product repairs are required and is necessary when ordering replacement parts. It helps plan for acquisition orders and reduces the possibility of errors.

Every line of the bill of materials should include the part code, part number, part values, part package, specific description, quantity, part picture, or part link and note other requirement of parts to make everything’s clear.

You can get useful Bom sample from PHILIFAST which will help you reduce the component issues when you send your files to pcba supplier.