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April 1997

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Subject:
FAB: Plating on flexible circuit
From:
es500yap@pts7 ( YAP CHOW LAN)
Date:
Mon, 28 Apr 1997 18:15:42 +0800
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Had some problem from a supplier who is providing us flexible circuit which require plating.  It seems that we can never get Ni 
plated onto the flex cct.  We need this flex for wirebonding.  One suspect is 
the photoimageable covercoat that was used on this flex while they have 
experiences that the conventional covercoat used on other product do not give 
them problem with Ni plating.  Does any one has idea about this?  Plating spec 
is Ni-Pd-Au for wire bonding.

Appreciate any input.


thanks & regards,
stella

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