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Reply To: | TechNet E-Mail Forum. |
Date: | Thu, 14 May 1998 16:35:49 -0400 |
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I believe the use of cold storage may be intended slow or minimize the
copper-tin intermetallic growth. If I simply bake a board for a long
time, the copper-tin intermetallic grows faster and can become
problematic for soldering. I'd question how much shelf life I'm
buying by reducing the storage temp from 25C to 14C.
One man's opinion.
______________________________ Reply Separator _________________________________
Subject: [TN] Storing PCB's
Author: "TechNet E-Mail Forum." <[log in to unmask]> at smtp
Date: 5/14/98 11:53 PM
I am confused.
For years, I have understood that the best way to store pcb's prior to
assembly is in a heated, relatively dry environment. I am sure that the
general consensus amongst most manufactureres is that this works best.
Well, just recently I was told by a company setting up a new facility that
they had been advised by a well known consultant to use a cold dry
environment. They are planning a 12-14 degree Celsius storeroom, once again
relatively dry.
Is there new thinking on this, or have they been badly advised?
[Nicholas Kane]
[Axion Australasia]
[Suite 3, 651 Canterbury Road]
[Surrey Hills]
[Victoria 3127 Australia]
[tel: 613 9899 3511 fax: 613 9899 3811]
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