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| From [log in to unmask] Mon Jul 28 09: |
39:22 1997 |
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| >From willli Thu Jul 24 15: |
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Was is class at The Copper Connecton in San Jose where saw a video of an
occurance of the growth of metal across a narrow space conductor to
conductor with out solder mask coverage in an environment with elevated
humidity.
check your circumstances--this was an amazing video---actually saw growth.
At 06:28 PM 7/24/97 +0500, B.R.SHASHIRAJ wrote:
>Hello Technetters,
> Can some one out their throw some light on below mentioned problem
>,probable causes and solutions.
> 1. this defect noticed on 1.6mm double sided board, smobc,hal finish.
> 2. after assembly and while testing at elevated temperature noticed
> shorts during test cycle on the solder side between connector pads and trace
>running thro.
> 3.unable to figure out ,this shorts appear of very little dimension and
>are very small compared to pad /trace.
>
> can some one figure what this cud be and why
> THANKS.
>
>BYE.
>
>
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