Content-Type: |
text/plain |
Sender: |
|
Subject: |
|
From: |
|
Date: |
Mon, 24 Aug 1998 18:18:08 -0700 |
MIME-Version: |
1.0 |
X-cc: |
|
Reply-To: |
|
Parts/Attachments: |
|
|
Nick-
Liquidus is about 220 deg C at 90% Sn, 10% Pb, by eyeballing a phase
diagram.
Don't have experience with this solder alloy.
You wrote....
------------------------------
Date: Mon, 24 Aug 1998 18:18:37 -0400
From: Nick Nicolaides <[log in to unmask]>
Subject: Solder temperature
My book only goes to 70/30 (tin/lead). need help. Our part supplier is
using
90/10 rather then 63/37. The higher tin causes more oxides creating some
cold solder joints. Supplier has brass base followed by copper flask and
90/10 tin/lead. What is the liquidus temperature of tin/lead of 90/10
and
has anyone had the experience. Also the feet to this part are very small
and
close to the pad. Hard to inspect. We had the supplier go to 63/37 and
had
very little problem. Supplier wants to go back to 90/10. whats the
concensus?
------------------------------
################################################################
TechNet E-Mail Forum 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's web site (http://www.ipc.org) "On-Line Services" section for additional information.
For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312
################################################################
|
|
|