Good afternoon all,

Excellent discussion.

Has anyone substituted a higher Tg material on a board and seen a better
MTBF than the low Tg version?  From my brief stint in the real world,
customer priority was high (170C) Tg material and controlled impedance.

Hans

Integrity First  -  Service Before Self  -  Excellence in All We Do
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Hans M. Hinners
Electronics Engineer
Warner Robins - Air Logistics Center (WR-ALC/LUGE)
Special Operations Forces System Program Office (SOF - SPO)
Gunship Team
226 Cochran Street
Robins AFB GA 31098-1622

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-----Original Message-----
From: Earl Moon [mailto:[log in to unmask]]
Sent: Friday, November 09, 2001 4:58 AM
To: [log in to unmask]
Subject: Re: [TN] High Tg FR-4


Daan,

I always respect your input. I have studied and written a bit on this
subject over many years. The fact remains, we have serious problems
processing plated through holes as is evidenced by recent postings on this
fourm. Another fact remains, though I'm all for the highest Tg materials
available in my MLB constructions, higher Tg materials don't make good
designs, as such, better.

Earl

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