Subject: | |
From: | |
Reply To: | |
Date: | Fri, 9 Mar 2001 08:49:56 +0800 |
Content-Type: | text/plain |
Parts/Attachments: |
|
|
For Cu higher stress basically mean higher strain because it can be
considered as linear elastic material in the temperature range of -65C to
300C.
But be cautious about the results from simulation, which can be misleading
sometimes.
rgds/TL
-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of LI YUAN
Sent: Friday, March 09, 2001 5:57 AM
To: [log in to unmask]
Subject: [TN] Substrate trace crack
We were debating PTFE vs BT. Our simulations show that PTFE has less
stress. However, one of my colleagues argued that cu trace failures are
strain dominant failures, hence less stress does not mean better substrate
reliability. I don't know whether he is wrong or right. Please advise.
Thanks a lot,
Yuan Li
----------------------------------------------------------------------------
-----
Technet Mail List provided as a free service by IPC using LISTSERV 1.8d
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt delivery of Technet send the following message: SET
Technet NOMAIL
Search previous postings at: www.ipc.org > On-Line Resources & Databases >
E-mail Archives
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700
ext.5315
----------------------------------------------------------------------------
-----
---------------------------------------------------------------------------------
Technet Mail List provided as a free service by IPC using LISTSERV 1.8d
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt delivery of Technet send the following message: SET Technet NOMAIL
Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
---------------------------------------------------------------------------------
|
|
|