PCBA Cost Breakdown: Where Does Your Money Actually Go?
2026-05-19
You receive a PCBA quote. But what are you really paying for?
Understanding PCBA cost drivers helps you negotiate better and avoid hidden fees.
The 4 Main Cost Components
Cost Element Typical Share What Affects It
Components 50–70% Brand, batch size, market availability
PCB fabrication 10–20% Layers, material, surface finish
Assembly (SMT + wave) 10–15% Component count, placement density
Testing & setup 5–10% AOI, X-ray, functional test, stencils
Components 50–70% Brand, batch size, market availability
PCB fabrication 10–20% Layers, material, surface finish
Assembly (SMT + wave) 10–15% Component count, placement density
Testing & setup 5–10% AOI, X-ray, functional test, stencils
Where Hidden Costs Lurk
Hidden Cost Why It Happens How to Avoid
Component substitutions Original part unavailable Ask for approval before swap
Rework charges Design not DFM-ready Request free DFM review
Expedite fees Short notice or rush Plan ahead or confirm rush policy
Test point addition Missing from design Specify test requirements early
Component substitutions Original part unavailable Ask for approval before swap
Rework charges Design not DFM-ready Request free DFM review
Expedite fees Short notice or rush Plan ahead or confirm rush policy
Test point addition Missing from design Specify test requirements early
How to Get a Fair Quote
Send the right files upfront:
- Gerber (or CAD files)
- Full BOM with part numbers
- Assembly drawings (if any)
- Test requirements
STG Electronic provides free DFM review and transparent breakdown – no hidden line items.
Ready to See a Clear Quote?
Send your Gerber files + BOM → 24hr quote with full cost breakdown
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