Dear Netters:

I have a question.  People say that plated through hole is the weak link
in the printed circuit board.  What is the data, i.e., when does a PTH
fail (at what temp cycling, at what no.  of
cycles)?

For microvias, PTH are often filled and planarized.  Is a filled PTH
more reliable?  Any data on this? Has anyone looked whether a pure
dielectric vs. filled dielectric vs. a Ag-filled paste make a
difference?

Thanks.

Goran
_________________________________________________________________________

 Goran Matijasevic
 Director of Development
 Ormet Corporation
 2236 Rutherford Road, Suite 109
 Carlsbad, CA 92008
 Tel: (760) 931-7099  Fax: (760) 431-6971  E-Mail: [log in to unmask]

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