Sender: |
|
Subject: |
|
From: |
|
Date: |
Tue, 14 Sep 1999 15:48:13 -0500 |
Content-Type: |
multipart/mixed; boundary="simple boundary" |
MIME-Version: |
1.0 |
Reply-To: |
|
Parts/Attachments: |
|
|
Al,
Is a cold oven, an oven with a cooling core inside?
I have used a environmental chamber, which has a cooling core that dried
my material with out heat. Kinda like the defroster on your car.
Chris Robertson
PCB Designer
Lockheed - Martin Services, Inc.
[log in to unmask]
Ph/Fax (256) 722-2626
ICQ# 13541566
----- Original Message -----
From: TechNet E-Mail Forum. Alan Shaw
<[log in to unmask]@NAPCOSECURITY.COM>
To: <[log in to unmask]>
Sent: Tuesday, September 14, 1999 4:34 PM
Subject: [TN] Baking SOIC packages to dry them prior to reflow solder
I have 5 year old plastic SOIC packages on reels and want to dry them out in
an oven rather than leave it to the pre-heat of the reflow solder machine.
Production asked for temperature and time for the SOIC to be in the oven.
My initial thoughts are to put them in a cold oven and set the thermostat to
110'C and leave them baking for 4 hours. Then turn off the oven. Remove them
when cool and use in the insertion machines the next day.
Is the temperature and time suitable?
The leads have passed a solderability test already, would the time in the
oven have a significant effect on solderabitiy?
Al Shaw
ashaw at napcosecurity dot 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
##############################################################
|
|
|