Hi, Gary
Without seeing a picture of your particular lead, it is hard to tell you what to do.
On the one hand, for leads going through glass hermetic seals you need to be careful not to thermally shock the glass seal. This will allow liquid from the cleaning process (and from the atmosphere) to enter the power converter/filter. 
On the other hand, you do not want the operators to bring their lunch and spend the day on that particular joint, as too long of a dwell time is usually more damaging. We sometimes use a barrel-shaped heatsink on the lead just above the point where it enters the component package or near the PWB termination to allow us to sink the heat and use a hotter tip on the business end that we are trying to solder to. It is a standard alligator clip with a cylinder (cut in half) welded on of the appropriate size for the application.

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Bremer, Gary
Sent: Monday, October 23, 2006 3:24 PM
To: [log in to unmask]
Subject: [TN] Minimum Soldering Iron Temperature setting?

I have normally have specified 600° Fahrenheit as a minimum setting for the soldering iron(s) for the production floor. With the proper tip selection this covers the thermal mass of the component lead (wire for terminal post) and the barrel/pad/terminal post to allow the proper formation of a solder joint.

 

What is the minimum soldering iron setting used for a pierced terminal with 22AWG stranded wire? The pierced terminal is part of a power filter with a glass seal bead.

 

I have been told to set the soldering iron/station(s) to 464° Fahrenheit maximum 240° Celsius. I believe this will cause longer time for the soldering operation and may have cold solder joints when the operators are rushed.

 

Thanks in advance for you assistance in this matter.

 

Gary Bremer
Senior Manufacturing Engineer, CIT
  
Curtiss-Wright Controls Inc. 
Embedded Computing -Subsystem

28965 Avenue Penn
Santa Clarita, CA 91355-4185
Main: 661.257.4430 extension 2170
Fax: 661.257.4782


e-mail: [log in to unmask]
Web: www.cwcembedded.com 

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Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
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