Ladies & Gentlemen,
         I am currently working on a schedule for solder pot sampling. The
     pots will be tested every 30 days and two samples will be taken from
     each pot.  This way if one test happens to fail, we can send the other
     sample to verify the test.  The problem I have ran into is what to do
     if it fails.  In a recent customer audit I was asked what kind of
     containment would we have if the test failed?  Since we are using the
     ANSI/J-STD-001A there are clearly defined limits that must be met.  It
     is my understanding that when you test the solder you are testing for
     the last 30 days. The problem I have is this.  If I test the pot on
     1-1-98 and it passes I'm fine.  But when I test again on 2-1-98 and it
     fails I have a huge problem.  Since the last day I can prove the
     solder was within limits was Jan, 1 that makes everything suspect bad
     material to that date.  I can't write the procedure to recall
     everything for the last 30 days, I need a different solution.  If you
     have any information on how your company handles this please let me
     know.  Please keep in mind, that we must meet the ANSI-STD and any
     element out of range is considered a failure to our customer,
     regardless if the solder integrity is affected or not.

     Thanks
     Chris Smith
     Manufacturing Engineer

################################################################
TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c
################################################################
To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body:
To subscribe:   SUBSCRIBE TechNet <your full name>
To unsubscribe:   SIGNOFF TechNet 
################################################################
Please visit IPC web site (http://jefry.ipc.org/forum.htm) for additional information.
For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312
################################################################