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Date: | Wed, 09 Apr 97 17:19:46 cst |
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Hi TechNet -
You have me confused about what type of component(s) you are dealing
with (a "component block" is a term I am not familiar with) but the
source of your solderability is pretty straight forward. Cardboard is
notorious for outgassing many different contaminates that can
interfere with solderability. Silver finishes can tarnish in hours due
to sulfur contamination from cardboard. What is the component finish
and are you controlling the type/quality of cardboard the components
are stored in? Also what is the storage environment conditions
(temperature, humidity, etc.).
Dave Hillman
Rockwell Collins
[log in to unmask]
______________________________ Reply Separator _________________________________
Subject: Solderability of component blocks
Author: [log in to unmask] at ccmgw1
Date: 4/9/97 4:01 PM
We have notice a problem with solderablity of component blocks after
they have been sitting for a while in cardboard for a while. This has
created blow holes in the solder joint, the problem has gone away after
cleaning the parts with alcohol. Has any one else had this problem, and
what kind of packing material will not produce this problem?
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