I've got a project BOM costed out and I know my PCB costs. Without sending my project out for quote I'd like to be able to estimate the assembly cost by number of SMT components placed and the number of through holes (for connectors) requiring hand soldering. Assume these are assembled in the US. Assume I know the fixed costs for stencils, pick and place programming, etc.
Anybody have some ballpark figures which might help here?
Answer
We usually have 100 units assembled at a time. I usually have a 64 to 100-pin QFP, a few 8 to 20-pin SOIC chips, and many 0805 resistors and caps.
I estimate $0.07 to $0.08 per pin/pad. That usually gets me a ballpark figure of what the assembly houses will charge. This does not include the tooling and setup charges. They run between $200 and $500, depending on the assembly house.
Edit We use assembly houses in New England (USA).
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