Steps for PCB Assembly Process

  • Step1: Customer submits files

  • Step2: Jinseo Electronic sources parts and boards (or customer provides all or some parts)

  • Step3: BOM and files review/verification

  • Step4: Machine programming

  • Step5: Incoming parts and boards inspection

  • Step6: Assembly order

  • Step7: Automated optical inspection (AOI)

  • Step8: X-ray test (if necessary)

  • Step9: After a thorough quality testing, the boards are delivered to the end customers.


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How to Get A Quote ?

  • CAD-Generated BOM List in .xls, .xlsx, .csv, or tab-delimited text document (the information should be in a machine-readable format). The BOM needs reference designators, value, package/decal, description, and (manufacturer) part number. Learn how to do BOMs right here.


  • Gerber files as generated by your CAD program.  For any side with SMT parts, we need three layers: copper, paste, and silkscreen (legend).


  • Your quantity and lead-time requirement.


How to Place An Order?

Placing an order for printed circuit boards assembly can be done via email. We need:


  • Gerber Files and  Excellon (or NC drill) files

Please include all Gerber files (copper, silkscreen, solder paste, solder mask layers, etc.).


  • Bill Of Materials (BOM) Please send us your BOM in an Excel format. Your BOM should include:

  • Quantity of each part

  • Manufacturer part number (MFG PN)

  • Reference designator(s)

  • Part description

  • value

  • Decal/package/Footprint (Optional)


  • Centroid File (also known as Pick and place file or XYRS information)

It should include component locations, rotations, and reference designators.


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