pipelineaudio
Active member
What’s the reason for 63/37? I’ve only used 60/40 and sometimes have to use ROHS compliant if the products are going to Europe and I am horrible with it compared to 60/40
FourT6and2
Well-known member
60/40 solidifies over a range of temperatures. That means as it transitions from liquid to solid, it goes through a plastic state where it's kind of pasty and slushy. If you disturb the joint during this transition, you get a bad (cold) joint. 63/37 is eutectic, which means it both melts and freezes at one specific temperature. Therefore, it sets and transitions much more quickly and all at once. That means fewer cold joints. It also means lower heat is needed, which is better for sensitive components.
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pipelineaudio
Active member
Awesome! After a lifetime of soldering patch bays and all manner of nastiness, I never really thought about the hows and whys of the solder itself! I gotta try some. And probably time for a new iron.
7704A
Well-known member
Kester 63/37 is the bees' knees.
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R
raiken
Active member
Only Weller soldering stations and Kester 63/37 for me.
B
BDC
Member
Yeah I bought one of those a year or so ago and it was a pretty big upgrade for me..... I really like how it gets to temperature fast and gives a constant temp reading......Previously was using 40 watt Radio Shack irons........built 6 amps with them and numerous repairs....
I've been using the same 60/40 Kester .031" a long time along with some lead free stuff from Radio Shack......
I'm gonna order some of that 63/37..Good heads up on that... I'm not a tech just a DIY guy to a point..
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