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August 2004

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Subject:
LeadFinish vs PCB Finish
From:
Joe Lee <[log in to unmask]>
Reply To:
(Leadfree Electronics Assembly Forum)
Date:
Wed, 11 Aug 2004 09:17:34 -0400
Content-Type:
text/plain
Parts/Attachments:
text/plain (27 lines) 
To all:
Is anyone aware of incompatibilities between various leadframe finishes and
PCB finishes?
I would expect there not to be issues if the same finish was used on both
the leadframe and PCB.
Leadframe Finish  PCB Finish    Compatibility
SnPb              SnPb          Good
SnPb              Imm-Sn        Good
PureSn            Imm-Sn        Good
PureSn            Matte-Sn      ?
SnNi              Imm-Ag        ?
SnNiCu            ENIG          ?
.
.

Regards
Joe Lee


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