Sender: |
|
X-To: |
|
Date: |
Wed, 10 Nov 1999 20:53:54 EST |
Reply-To: |
|
Subject: |
|
MIME-Version: |
1.0 |
Content-Transfer-Encoding: |
7bit |
Content-Type: |
text/plain; charset="us-ascii" |
From: |
|
Parts/Attachments: |
|
|
Hi Bernhard,
At Bell Laboratories we found that 1812's were not suitable in
telecommunications outside plant environment from a solder joint reliability
perspective (not considering 1812's with thicker solder joints due to
gluing). CC's are susceptible to component cracking depending on the size of
the solde fillet--the larger the fillet, the more stress on the CC's. Also,
too rapid cooling from reflow can cause thermal shock stresses that are too
high.
Werner Engelmaier
Engelmaier Associates, L.C.
Electronic Packaging, Interconnection and Reliability Consulting
7 Jasmine Run
Ormond Beach, FL 32174 USA
Phone: 904-437-8747, Fax: 904-437-8737
E-mail: [log in to unmask], Website: www.engelmaier.com
##############################################################
TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c
##############################################################
To subscribe/unsubscribe, send a message to [log in to unmask] with following text in
the body:
To subscribe: SUBSCRIBE TECHNET <your full name>
To unsubscribe: SIGNOFF TECHNET
##############################################################
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
information.
If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or
847-509-9700 ext.5365
##############################################################
|
|
|