To all,

For purchased components we impose solderability requirements of J-STD-002
on our suppliers.  Most of the time we use these purchased parts in a timely
manner and do not experience solderability problems.  More recently,
however, we are having to make decisions about whether or not we can use
components from stock that are 1-2 years old.  There seems to be some
confusion within my group as to whether or not "solderability testing" needs
to be performed to determine whether these parts are still solderable.

 In reading J-STD-001B para 5.2 Solderability, the last sentence says "When
a pre-tinning and inspection operation is performed as part of the
documented assembly process, that operation may be used in lieu of
solderability testing." Based upon this statement, would it be acceptable to
tin and inspect a sample of each aged lot based upon an established sampling
plan (that we would create) Vs having to go through the riggers of
solderability testing per J-STD-002.  Based upon what I have read it appears
that we will in fact need to validate the solderability of these parts based
upon their age?  Any clarification would be welcome.

Todd Wakeland
TRW ASD
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