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Mon, 22 Jun 1998 10:58:06 -0400 |
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Hi TechNet!
Does anyone know of any guidance, specifications, design practice etc regarding acceptability of drilled thru holes and routed slots which are not plated? We have observed haloing and glass fiber intrusion in & around some of the holes & slots at the bare board level. Our concern is processing chemistries wicking into the laminate during assembly which includes wave solder followed by hand soldering of a number of components and several trips thru the semiaqueous and vapor phase cleaners. The unplated holes are for hardware & mechanical uses, not electrical, but there are active circuitry traces nearby. These are double sided polyimide boards. Anyone have any suggestions or similar experiences?
Thanks in advance.
Sheila @ Tracor AES
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