How to Document Your PCBA Process for Better Results

PCBA manufacturing requires multiple documentation subsets to keep track of information flow, order materials, and regulate processes. Before manufacturing this includes:

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• Bill of Materials. The first step to successful manufacturing is a comprehensive and detailed parts list. Your BoM will be broken down into an eBoM (Engineering Bill of Materials) that lists all the parts, components, and materials within the design, and an MBoM (Mechanical Bill of Materials) which shows how the entire product is to be assembled physically.

• A Centroid File. This file, also known as XYRS(X-y-rotation-side), describes the orientation and positioning of each surface mount component, including its X and Y positions, its rotation, and whether it is mounted top or bottom. In addition, through-hole components require a separate component placement file.

• Electronic Schematics provides an organized view of electrical circuits located within the PCBA and are necessary for manufacturing.

• Design files. Design files contain additional information about layers and component placement, and vary depending on the EDA tool used.

• You will encounter more paperwork after placing your order and the manufacturing process begins. Purchase orders, engineering changes, price variances, inventory releases, and invoices are among the items on the list.