Bernzomatic SPecialty Lead-Free Premium Silver Soldering Kit

For those complaining about circuit board application. This product was NOT meant for circuit board cause its melting point is to hot for boards.

Like the other reviewer, I bought this intending to use it on PCBs and opened it only to find out that the flux will ruin my board. Luckily I knew enough not to use it. Seeing as how this is advertised as being for circuit board use this is a huge problem. That being said the solder works nicely, and I can use the flux for other repair projects around the shop, so it wasnt a total loss.

This product works OK for soldering normal metal applications, but should never be used on electronic circuit boards. The tube of flux that is provided with it is an acid based flux (read its ingredients) that is water soluble. As any electronics tech will tell you (or you can Google "solder flux" for further info) this type of flux will destroy a circuit board by leaving a corrosive (and conductive) residue behind on the board. It may work for a few days or weeks, but then the corrosion will eat away at the delicate copper runs on the board, and also cause unwanted conduction between adjacent copper runs, making the circuit board malfunction. I find this package really misleading because it is actually marketed as being made for "circuit board repair", and even worse, the solder in the package is (purposely?) wrapped around the tube of flux, so that you can't tell that it is the wrong flux until after you buy it and open the kit package. Always use resin (also spelled "rosin") flux instead for electronic work, or a solder that has a core of resin flux built in- most special electronic solders have this core built-in to them. Note: if it's too late and you have already used this kit on a circuit board, my only advice would be maybe you can try to save the board by sponging the soldered area with water to try and remove as much residue as possible, and then thoroughly drying the board (a couple of hours with a warm hair dryer). Obviously any power needs to be removed from the board before doing this, and I would give this a 50% chance, I would guess, of saving the board. Thanks for letting me post this.