Electronics Forum | Mon Sep 24 12:47:37 EDT 2007 | PJ
I am doing some research on flux free/flux less SMT reflow soldering. Do you have any equipent/process recommendations? Does anybody use it for volume production and what are the constraints (finish, balls, paste, vacuum, pressure, size)? What is
Electronics Forum | Thu Sep 27 14:24:29 EDT 2007 | itwasbill
Can anyone recommend an automated solder paste dispensing unit that works well and won�t break my company�s bank account? We are getting a bit pushed out by continuously purchasing one stencil after another. Thanks for any help any of you can offer
Electronics Forum | Thu Oct 04 09:21:35 EDT 2007 | dj_jago
We use copper grease on the bolts of our wave solder machines solder pot. The working temperature is up to 1000degC. I believe that the boiling point of mineral oil is a little over 300degC and you will exceed this with iron temperatures, especially
Electronics Forum | Fri Oct 12 08:19:12 EDT 2007 | davef
Michael We know you're just trying to have fun by getting us to respond. Going along with the game, if your solder is more expensive, requires more energy to melt, produces less reliable solder connectiuons, and is worse for the environment; how to
Electronics Forum | Fri Oct 26 07:41:26 EDT 2007 | bbl
We recently changed to an Amtech no clean paste and flux that is washable. So far excellent results. Far superior to the water soluable paste we were using. Fewer solder balls, longer life in printer, boards can be left up to 5 days and still come
Electronics Forum | Mon Oct 22 21:34:36 EDT 2007 | davef
Double check on this, but we have this little voice in our heads telling us that your AgPd termination is intended for conductive adhesive applications. Check with your component supplier. We recall a thread on SMTnet [ http://www.smtnet.com/forums
Electronics Forum | Tue Oct 23 07:03:52 EDT 2007 | davef
We're not really sure. Usually when solder leaves the pads and wicks-up a component lead, it means the component lead is much warmer than the pad on the board. This is the direction we would have taken this if we hadn't taken the AgPd / conductive e
Electronics Forum | Tue Nov 06 07:16:36 EST 2007 | hussman
Run a board with regular solder paste and put your worries to rest. Total cost about $0.50 American. Total Time about 3 minutes placement - 6 minutes oven. Looks like it might be worth a cup of coffe and 9 minutes of your time to try.
Electronics Forum | Wed Nov 07 09:19:16 EST 2007 | pjc
Could be not enough peak temp. Do you have a profiler? I'd measure at the BGA joints- drill under board to get access to BGA solder joints and embed a couple of thermocouples with hi-temp solder, then run your profile to see max. temps. and that prof
Electronics Forum | Tue Nov 13 21:53:55 EST 2007 | molos21
I have been using sn100c for over a year now on our wave solder process and I am plenty satisfied so far. The secret for success with this alloy is to have your solder pot near 270 celsius and your dwell time has to be near 4 sec and your temperature
