Subject: | |
From: | |
Reply To: | TechNet E-Mail Forum. |
Date: | Thu, 12 Jul 2001 09:30:13 -0400 |
Content-Type: | text/plain |
Parts/Attachments: |
|
|
If one receives PEMs from the manufacturer which are supposedly dry and
handled correctly but are found to have internal delamination
by acoustic spectroscopy, whether this is an automatic sentence of
popcorning when the devices are put through convection reflow. Is there air
inside the part that can cause popcorning of a dry part when no outward
signs of delamination or popcorning is visible.Also,
---------------------------------------------------------------------------------
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
---------------------------------------------------------------------------------
|
|
|