All the formulations that I tested electromigrate at 85/85 -50V on IPC B 24
coupons (0.5mm spacing) and at 65/85 10V on IPC B 25 B combs (12.5 mil
spaces), so that's too close.
Karen Tellefsen - Electrical Testing
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908-791-3069
John Burke
<jburke@OPTICHRON
.COM> To
Sent by: TechNet [log in to unmask]
<[log in to unmask]> cc
Subject
07/15/2009 01:11 [TN] Silver epoxy
PM
Please respond to
TechNet E-Mail
Forum
<[log in to unmask]>
; Please respond
to
John Burke
<jburke@OPTICHRON
.COM>
Many years back (too many) I was working on silver epoxy connected hybrids
for high reliability applications.
I seem to recall that silver migration is a definite issue. Does anyone
have
any rules for mitigating this risk such as design clearances between pads
etc?
Best regards,
John Burke
Director of Operations
http://www.optichron.com
4221 Technology Drive
Fremont, CA 94538
Cell (408) 515 4992
Desk (510) 249 5233
Main (510) 249 5200
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