Why do PCBA processing need to provide PCB files?

PCBA is a necessary step for manufacturing electronic equipment. PCBA refers to the operation of installing components on a bare board to make the circuit board functional. Companies that are new to PCBA may be confused about what documents they need to provide to PCB assembly companies. The most common question they receive is: Why do PCBA processing need to provide PCB documents?
Why do PCBA processing need to provide PCB files?
01 March 2024
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PCBA is a necessary step for manufacturing electronic equipment. PCBA refers to the operation of installing components on a bare board to make the circuit board functional. Companies that are new to PCBA may be confused about what documents they need to provide to PCB assembly companies. The most common question they receive is: Why do PCBA processing need to provide PCB documents?

What is a PCB file?

PCB file is an electronic file used to describe the structure and layout of a circuit board. It contains information such as the location and connection relationships of all components on the circuit board, as well as the layer structure of the circuit board. PCB files are usually generated by professional PCB design software and can be read and parsed by machines. We call them gerber files.

Is it necessary to provide PCB gerber files?


Yes, because PCB files are one of the important basis in the manufacturing process. During the PCBA assembly process, it is necessary to determine the location and connection relationship of all components on the circuit board based on Gerber files, so that components can be mounted and welded accurately. At the same time, the page contains the layer structure information of the circuit board. PCB manufacturers can prepare corresponding production materials based on this information. It also includes production process requirements, such as welding temperature, welding time, etc.

Therefore, in order to ensure the progress and quality of PCBA assembly, it is necessary to provide PCB files.

In addition to PCB files, what other files are required for PCBA assembly?


1.Gerber file
During the PCBA assembly process, the location and connections of all components on the circuit board need to be determined based on the Gerber file. In addition, during the production process, Gerber data is used to make stencils and is also used to make patch procedures.

2.BOM (Bill of Materials) file
The BOM file is a detailed list of components, which records all the electronic materials that need to be used in the PCBA, including the brand, model, description, usage amount, etc. of the materials. The electronic materials used on the entire PCBA board will be reflected in in the bom list, so the existence of the bom list is essential.

3.Coordinate file
The coordinate file is a standard for locating the coordinates of PCBA mounting components. The automated equipment used in PCBA assembly will use the coordinates of the positioning points. It locates the coordinates of components. This file is needed when programming the project (such as placement machines, SPI, first article detectors, AOI and other equipment). The coordinate files can also be exported from PCB files. .

4.Test files
Usually after the PCBA is produced, customers will have various test project requirements based on different needs, including test project parameters and technical indicators.

Summarize

By handing over the manufacturing documents required for PCBA to professional PCBA manufacturers with confidence, it can solve the negotiation and procurement time, language communication problems, inventory costs, inspection time, personnel expenses, etc. in material procurement.
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