Dave,

I found my copy of 1601 and now need to do some reading before I ask more questions.

Thanks,

Phil

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Subject: Re: [TN] board baking - thread continuation


Hi Phil - I know that some folks think its a hassle to reseal  the bag after removing a portion of a board group but I think it is a simple and somewhat effective manner to deter water absorption by the remaining boards. The optimum situation would be to reseal in a moisture proof bag that inhibits interaction between the boards and air but even sealing up any bag with a desiccant pack is a reasonable measure to create an storage "envelope" that becomes static. The IPC-1601 document has some good information that will be useful for your inquiry.

Dave Hillman
Rockwell Collins
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[TN] board baking - thread continuation







Ok, you folks have been very helpful so far.  Now I need to pump you for a little more information, but let me set the stage a little.

We typically build boards in small batches (25 to 50 boards at a time) but we may buy bare boards in a larger quantity.  Historically we would slice (or rip) open the sealed board package and remove the number needed for the kit.  The remainder would sit in the parts bin in the stockroom with no special handling.  Being in New England, summertime can get pretty humid.  I maintain that we should seal the boards for the kit (build here or ship to a CM) and the leftover boards in a bag or pouch with a desiccant.  I did order IPC-1601 back in August, but it hasn't made it up to my office yet.

To properly store the boards is there a preferred plastic bag and desiccant I should use?  I'm going to assume your basic grocery store "Zip-lock" type bag is NOT the product to use.  I would think there are bags and desiccant that are specifically for this application.

Thanks in advance,

Phil Nutting
Design for Manufacturing Engineer
Kaiser Systems, Inc.
126 Sohier Road
Beverly, MA 01915
Phone: 978-922-9300 x1310
Fax: 978-922-8374
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