Eric, Try cutting off a foot or two from your solder roll. No I am not crazy - what you describe is what happens when flux is missing from the solder. It occasionally happens that there will be a length of solder without the flux. Blame it on the solder manufacturing line.
73, Don W3FPR On 10/9/2010 4:42 PM, Eric Champine wrote: > Hi all. > I have been soldering these relays and it is not working! > First off I have good soldering skills and I have soldered many kits and I > have not had this problem to date. > I soldered the relays K1 through K8 with no problem but I have tried to > solder the rest and it is not working. > Relays K9 through K15 are the ones that have the SMD in the middle and I am > thinking that this may have something to do with my problem because they are > the only ones doing this. I place the relay and flip it over to solder. I > place the soldering iron tip on one side of the pin and touching the pad > too, then touch the other side of the pin and pad with the solder and I get > a small puff of smoke and the solder is melted but as I take away the > soldering iron tip, the solder comes too. The solder seems to want to stay > with the tip but not on the pad or the pin on the relay. What is wrong? > I have tries different temps and I have tried scratching-up the pins and > pads just in case there is some sort of coating preventing the solder from > attaching its self. That did not work. I am using Kester 60/40 .03 dia. > solder. Everything I have soldered so far soldered fine with the exception > of these relays. I am so frustrated. I hope some one else has had this > problem and it is not just me. I also thought about replacing the tip but > the tip looks like it is in good condition. > Please help me. Thanks to all. > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
