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Fri, 1 Sep 1995 11:47:23 -0500 (CDT) |
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| From [log in to unmask] Sat Apr 27 14: |
41:49 1996 |
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There is no IPC specification requirement for storage of PWB, and lenght
of storage. We have done a couple of studies about storage (IPC-TR-462)
which looked at solderability over a 2 year storage condition.
Essentially this study concluded, that if you had good solderabilty to
begin with and solder coating, and relatively benign storage, you could
solder well after 2 years. I don't know how to extrapolate this to 3-4
years, but I believe the same conclusions would hold. We have also
studied the literature on steam aging of components, and have done round
robin testing on this as well.
Regards
***************************************************
David W. Bergman, Technical Director
IPC
2215 Sanders Road
Northbrook, IL 60062-6135
708-509-9700 x340 Phone
708-509-9798 Fax
email [log in to unmask]
***************************************************
On Tue, 29 Aug 1995 [log in to unmask] wrote:
> WE NEED TO KNOW IF THE IPC MANUALS SPECIFY SHELF LIFE OF
> RAW PC BOARDS (AND ANY OTHER PARTS). CAN BOARDS BE
> SUCCESSFULLY SOLDERED AT 3-4 YEARS OLD? ANY HELP ON THIS
> WOULD BE GREATLY APPRECIATED.
>
> GLORIA
>
>
>
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