Electronics Forum | Fri Oct 04 16:08:28 EDT 2013 | hegemon
Same idea but simpler execution. Verify Solder pot temperature. Verify Temperature of Solder as it leaves the nozzle. Verify preheating gets your PWB up to 90C-120C prior to soldering. Check machine speed, verify 4 seconds contact with solder at
Electronics Forum | Thu Sep 03 21:49:20 EDT 2020 | kylehunter
> Not in our case, the pre-heat temp was not high > enough. Also our pre-heat is only from top > (KISS104). Ahh that makes total sense. We have bottom IR, and have thermocoupled at 100c, so I think we should be good on that end. Anoth
Electronics Forum | Fri May 07 02:37:31 EDT 1999 | Bob Willis
| Mornin! | | We just had vendor in here pitching a "low-temperature rework system" which was intriguing, but too expensive. He did get me to thinking though, beyond heating ceramic caps before hand-soldering them, it seems like it would be ad
Electronics Forum | Mon Jun 12 09:08:17 EDT 2006 | Chunks
Hi Grant, Boy, how do I say this - I might have to agree with Wave Master Larry. (Yeah, yeah - I know; Davef and Dr. Shocker will "burn me" again) "We" also solder large thru-hole connectors on with a selective solder machine. They measure 4 by 8
Electronics Forum | Tue Aug 28 11:12:23 EDT 2007 | grics
This is what I was thinking, but I am being beat up pretty badly by the selective solder. Ambient temperature is anywhere in the the neighborhood of 76 - 80 degrees F. I am not sure of the RH, but I wouldn't think that would be my issue... One of
Electronics Forum | Mon Nov 19 11:14:22 EST 2007 | taintedone
I am currently looking at selective solder machines. The two that i have looked at are the KIss 104 and the APS Novastar SP A400. Both machines are in the price range i need to be in. There are very different from each other as far as how they do the
Electronics Forum | Wed Jun 06 21:58:39 EDT 2012 | davef
Higher temperatures are the primary reason that there are more solder balls with selective soldering than in wave soldering. Possible causes are: * Solder mask type is the most important factor ... Solder resists becomes stickier at higher temperatur
Electronics Forum | Tue Jan 12 08:47:39 EST 1999 | Dick Casagrande
| | | I need leads on equipment vendors for selective soldering systems. I have information about ERSA and Seho already. I want to contact Air Vac in particular, but I can't find thier phone number. Thanks for the help | | | | | Jim, | | | | Be
Electronics Forum | Wed Jul 31 12:47:34 EDT 2002 | mzaboogie
Hi Patrick, We are using AIM 266-3. The topside preheat temp is approx 100 degrees C although we have played with that number both up and down. Raising the temp leaves a white residue, lowering the temp (below about 90 degrees) and the solder balls
Electronics Forum | Mon Dec 02 16:01:15 EST 2002 | russ
If you can, attach athermocouple to the locations where you are getting solder balls. A previous product I had showed the same thing and we found that we had inadequate preheat leaving the liquid flux to splatter when it hit the wave. It could aslo
