TECHNET Archives

July 1997

TechNet@IPC.ORG
Options: Use Monospaced Font
Show Text Part by Default
Condense Mail Headers

Message: [<< First] [< Prev] [Next >] [Last >>]
Topic: [<< First] [< Prev] [Next >] [Last >>]
Author: [<< First] [< Prev] [Next >] [Last >>]

Print Reply
Mime-Version:
1.0
Content-Type:
text/plain; charset="us-ascii"
Old-Return-Path:
<[log in to unmask]>
Date:
Thu, 17 Jul 1997 11:02:43 -0700
Precedence:
list
Resent-From:
[log in to unmask]
Resent-Sender:
TechNet-request [log in to unmask]
X-Status:
Status:
O
X-Mailing-List:
<[log in to unmask]> archive/latest/14086
X-Sender:
[log in to unmask]
TO:
[log in to unmask]
>From willli Thu Jul 17 12:
57:38 1997
Return-Path:
<TechNet-request>
X-Loop:
[log in to unmask]
Resent-Message-ID:
<"yc2AA1.0.C8I.mpbpp"@ipc>
From [log in to unmask] Mon Jul 21 15:
56:13 1997
From:
"J.Felts" <[log in to unmask]>
Received:
by ipc.org (Smail3.1.28.1 #2) id m0wounY-000BjaC; Thu, 17 Jul 97 12:57 CDT
Subject:
FAB: FR4 exotherm & rheology
X-Mailer:
Windows Eudora Light Version 1.5.2
Message-Id:
<[log in to unmask]>
Parts/Attachments:
text/plain (22 lines) 
[nothing but chirping crickets so far... re-submit]

Does anyone have a good approximate number (or source) for the exotherm per
unit volume (please don't make this M.E. count polymeric kJs/mole..:) for a
standard FR4 epoxy (B-stage) during reflow?  Can this be extracted from a
typical DSC scan?  (any help from the analytical lab experts out there?)
Does it occur entirely during the melt-gel profile?

Thanks, 
Joe Felts

***************************************************************************
* TechNet mail list is provided as a service by IPC using SmartList v3.05 *
***************************************************************************
* To subscribe/unsubscribe send a message <to: [log in to unmask]>   *
* with <subject: subscribe/unsubscribe> and no text in the body.          *
***************************************************************************
* If you are having a problem with the IPC TechNet forum please contact   *
* Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask]      *
***************************************************************************

ATOM RSS1 RSS2