Hi Phil,

check IPC-4553. It sets thickness levels and also gives a measuring routine, as it seems that ImAg is more difficult to measure than other finishes.

Regards,

Ioan

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Crepeau, Phil (Space
Technology)
Sent: 10 August 2006 15:15
To: [log in to unmask]
Subject: [TN] silver embrittlement

hi,

i'm trying to find out what's the safe maximum thickness of immersion
silver to call out on pwb's and smt components to minimize embrittlement
effects in solder joints.  can anybody out there help?

thanks,

phil

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