Originally Posted by
associatevalley
Is there a noticeable difference between 60/40 and 63/37?
The melting points at one temperature rather than a range for the 63 37. 60 40 is a bit of hit and miss but if your iron is powerful enough then its fine. Honestly I prefer the 63 37 because I sometimes solder integrated circuits (headphone amps and dacs). But for RC both should be equal. Get what is local and easy to source in a pinch.
http://forums.qrz.com/showthread.php...60-40-vs-63-37
Heres a quote from that thread
I would stick with the eutectic 63/37.
The idea behind the 63/37 is that it goes directly from liquid
to solid. The plastic state is virtually non-existant.