I think the guy probably has a standard form to fill out, and the bare
board is being treated like any other component in the assembly. So I just
wanted to be able to give him real data instead of a vague assurance.




                       "Joyce Koo"
                       <[log in to unmask]>             To:   "TechNet E-Mail Forum" <[log in to unmask]>,
                                                           Chris BALL/AuburnHills/VSDS/VALEO@VALEO
                       08/21/2006 03:28 PM               cc:
                       Please respond to jkoo            Subject:    RE: [TN] Std. FR4 question







You might want to ask NASA... their stuff operate at extremely low temp.
Why you care?
                                        jk

-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Chris Ball
Sent: Monday, August 21, 2006 2:48 PM
To: [log in to unmask]
Subject: [TN] Std. FR4 question

Hello All-

I can find plenty of info for Tg and such for std FR4 (ipc4101/21), but....
was just asked me what the other end of the temperature range is.  My
response so far is "the components will fail before the laminate", but can
anyone give me a more precise answer? I've looked up a couple of specific
vendor's spec's and see nothing about cold temp. or total temp range of
product.

Thanks in advance,
-Chris


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