:: ne member, and electrical engineering lead, who is taking
:: the lead role in instructing everyone how to solder, is insisting
:: that
:: 420degF is all that is needed to make leaded solder joints since
:: the melting
:: point for leaded solder is a little under 400degF.

One thing you haven't mentioned, are these PTH, SMD or great hulking 
BNC/RS232 connectors that are being soldered?.

For class 1 equipment - any crap soldering that isn't for medical, 
military or life saving purposes the temperature standard is 270 deg C 
- that is for PTH components excluding connectors.

For class 2 - 270 deg C

Class 3 (medical and life saving equipment) 330 deg C

That is assuming leaded solder. Lead free solder is hotter.

It also depends somewhat on the type and manufactuer of solder that is 
being used, as I assume you are in the US, look at Kesters website for 
recommended melting points etc for their range of sodlers.

Colin
--
cdb, colin@btech-online.co.uk on 5/01/2009
 
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