Knowledge Base

What Determines a PCB Assembly Quote in China?

Learn what affects a PCB assembly quote in China, including PCB fabrication, BOM sourcing, SMT/DIP assembly, testing, quantity, lead time, and logistics.

Huitai Engineering Team/10 min read

PCBA quotation review with BOM, components, sample boards, and testing requirements

Quick Answer

A PCB assembly quote in China is shaped by the PCB specifications, BOM cost and sourcing difficulty, SMT setup, component package density, testing requirements, order quantity, lead time, and the engineering review time needed to confirm the project. Two boards of the same size can differ several times in price once part count, fine-pitch components, and test scope are considered. That is why an accurate quote depends on complete files rather than an instant online estimate.

Main factors that affect a PCB assembly quote

PCB specifications — material, finish, and tolerances
PCB layer count and board size
BOM cost — usually the largest single factor
Component sourcing difficulty — obsolete, long-lead, or single-source parts
SMT setup cost — stencil and line setup
Component package density — fine-pitch, BGA, double-sided
Through-hole (DIP) assembly requirements
Testing requirements — visual, AOI, functional
Quantity — prototype, low volume, or batch
Lead time — expedited builds cost more
Packaging and labeling
Engineering review time to confirm scope

Quotation checklist

Before requesting a quote, check:

Gerber files ready?
BOM complete with manufacturer part numbers?
Quantity confirmed?
Alternative components allowed?
Testing method available?
Target delivery time confirmed?
Sample photos available if files are incomplete?

Common quote delays

Incomplete BOM
Unclear components
Unavailable or obsolete ICs
No test instruction
Missing quantity
Unclear assembly side (top/bottom)

Conclusion

The clearer your files, the more accurate your PCB assembly quote. Send Gerber files, a complete BOM, quantity, lead time, and testing requirements together. If files are incomplete, Huitai Electronics can review a partial BOM or sample photos first.

Send files for a PCBA quote review →