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Choosing Solder
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Choosing Solder

by jonfen on Sun Feb 07, 2010 5:41 pm

What solder should I be using?

I just watched a 40 minute IPC video on "Hand Soldering for Through Hole Components (Tin-Lead Solder)" and it brought up some questions for me.

To spare you from watching the whole video. They made the point that 63/37 eutectic solder doesn't have a "plastic range" that 60/40 does, they also made the point that 63/73 turns liquid at a lower temperature -- which means less heat required and thus less chance of damaging a component.

They also recommend using a solder thinkness that is slightly less than half the size of the land you are soldering.

So what are the reasons for choosing 60/40 solder over 63/37 eutectic solder mentioned in the SpokePOV parts list?

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Re: Choosing Solder

by westfw on Sun Feb 07, 2010 6:59 pm

63/37 solder is somewhat less common than 60/40. For example, All Electronics, referenced for most of the tools in that Parts List, doesn't sell 63/37. If you have a source, it's fine to use, and probably even preferred. But it's not "necessary."

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Re: Choosing Solder

by Rotzog on Sun Feb 07, 2010 8:03 pm

I use Kester 60/40 .031 inch for most things, and .050 for larger parts.

Just a personal reference though, developed the years.

Try different sizes and types (both brands and mixes) -- you will develop your own preferences.
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Please be positive and constructive with your questions and comments.