2013年11月26日星期二

In general, what is the thickness of surface finish for a printed circuit board?

Please find below a brief description of the thickness of surface finish for a printed circuit board:
Surface Finish
HQEW PCB Capabilities(FYI)
General Thickness
Max. Thickness(please contact our sales representative)
Notes
HASL
HASL pb free
0.7mil
(17.5μm)
1.2mil
(30μm)
 
ENTEK/ OSP 0.4μm  
Immersion Tin (ImSn)
30~40μ"
  
Immersion sliver (ImAg)
6~8μ"
  
Immersion gold (soft gold)3~5μ"12μ"The general thickness for immersion gold is 100~120μ". If your specification is beyond this range, please contact our sales representative. For your information, our capabilities for such service can be reached to 350μ".
Gold Plating
3~5μ" 
50μ" 
ENEPIG3~8μ"  

The above mentioned are FYI, thank you.

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