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Reply To: | TechNet E-Mail Forum. |
Date: | Mon, 27 Jul 1998 14:31:08 -0400 |
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Technetters, the following question is vague, and I'm sure that I'll get a
lot of "it depends" type of answers, but that's fine as long as the
responses contain some examples of guidelines that are followed.
- The solderability on many devices must be verified prior to assembly if
the devices have surpassed a certain date code limit.
So, here's the question:
- Once the solderability has been tested on one of these "old" lots, for
how long do you consider the test results valid? i.e. I may have some
devices with date codes that are 24 months old where I verified their
solderability 1 month (or choose any time period for the example) ago.
Should I re-verify solderability again prior to releasing them for assembly?
I'm looking for any guidelines that are used or considered in such
situations. I understand that storage conditions are likely the main
variable and that a general guideline is not likely. Any case-specific
examples would be greatly appreciated.
Yves Trudell
Nortel, Wireless Networks Calgary
Quality System Engineering
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