Hi Todd! Your interpretation is correct in that JSTD-001 requires (the "must"
word is used) that the solderability of the components  be ensured. That can be
done in one of three ways: 1) the component supplier gives you confirmation that
the components will meet the requirements of JSTD-002A ; 2) you conduct testing
that the components will meet the requirements of JSTD-002A; 3) you skip
solderability testing and pretin the components prior to their use in the
assembly operation. If a component vendor has a great plating process and will
provide you documentation that the components will meet JSTD-002A despite their
being X Xyears in storage then that meets the requirements or if you don't want
to conduct any solderability testing and choose to pretin then that also meets
the requirements (if the components have solderability problems they will show
up during pretinning!). You should select the method of ensuring solderability
which best fits your schedule, cost, and assembly process. The easiest and most
cost effective method is teaming with your component vendor. Hope this helps.

Dave Hillman
ANSIJ-STD-002A Committee CoChair
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Todd Wakeland <[log in to unmask]> on 02/09/2000 06:23:03 PM

Please respond to "TechNet E-Mail Forum." <[log in to unmask]>; Please respond to
      Todd Wakeland <[log in to unmask]>

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Subject:  [TN] Solderability Requirements



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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