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March 2002

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Mon, 18 Mar 2002 10:44:58 EST
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Moon nice insight,
Your supplier should have this ready for you.  You may have a good board
house but a poor match to your needs.  We have all kinds of wild and crazy
materials, but for the FR4 family these are some panel stock numbers.  Keep
in mind core thickness varies, and these numbers are very rough;

Cu            Min               Max
h/h         2400            5000
h/1           800           1300
1/1         3450            7000
1/2           100             200
2/2           500           1000

As you can see .5 (h) is king today, but 1/2 is always in stock.  Morale of
the story... add this as an item when doing supplier surveys.
The hardest working (and most clever) in any PCB shop is the Purchasing
person.  All these materials have a shelf life, cost a bundle (pun intended)
and have limited storage space as controlled environment is recommended.  If
not careful your lams can pile up.

Boston Brad
Coretec FAE
781 858 0783

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