Kester 24-6337-0010 44 Rosin Core Solder 63/37 .020 1 lb. Spool

Look closely at the flux descriptions for Kester cored solders before buying. No Clean does not mean you dont have to clean up the flux residue. It means the flux does not provide any cleaning action. Kester #44 flux is an active cleaning rosin flux that works to remove oxide from the surfaces being soldered. The solder flows quickly when soldering components in a thru-hole plated PCB, minimizing the time and heat required to obtain a reliable joint. The SN63 version is a eutectic alloy. It goes directly from molten to solid, minimizing the chances of a cold solder joint, at a temperature lower than either tin or lead by itself. I dont worry about the lead, just dont eat while working and wash hands well after handling the raw solder wire. I keep a spool of 0.20 for board work and a spool of 0.31 for chassis connector work on hand. I have never felt the need for fancy boutique solders that cost 4X the price of Kester. Its reliable product that always gets the job done.

You just cant go wrong with Kester solder. Ive used it for years and have had great success.

Worked very well for soldering SMD components down to 0.5 mm pitch.

Great product as expected from Kester. Top of the line solder, the only note I would make here is a pound is quite a large amount of solder, if you dont use much or you just have a small project to do you will have a lifetime supply. Great stuff, well packaged.

Melts nicely and doesn’t burn. Fills crevices easily and is easily removed using solder wick. Doesn’t drench my protoboard in flux. Be sure to use a good quality temperature-control soldering iron or you’ll get bad results no matter how nice your solder is.

This solder is my favorite and I have used it for yearw.

This is the first time I use Kester solder. Ive been using cheap sometimes questionable solder for more than a year and I was most of the time left unsatisfied or frustrated. And then I decided to give this Kester 63/37 1lb spool a try. That was one of the best decisions I ever made. I dont want to use your time explaining anything. Just go with Kester solder and see for yourself.

Works well for my application

Solders amazingly, fills, wicks, and has almost no plastic state

I wish I had discovered this solder earlier. I work with kids doing kit soldering, and some solders have very noxious fumes, which I guess is my fault for not realizing the different kinds of flux, etc. Being very fine (0.5mm) and eutectic (lowest melting point possible for Pb/Sn) it is a dream to work with, and seems odorless.