Electronics Forum | Wed Sep 13 12:08:02 EDT 2000 | Dave F
Charlie: I'm with Wolfgang ... The prime cause of your cracked solder joint on a surface mount part is mechanical stress. That�s about as specific as you�re gonna get. More information would be helpful. For instance: * Talk about the distribution
Electronics Forum | Wed Feb 12 12:06:58 EST 2003 | dwanzek
I need some input on what good solder thieves dimensions should be. I am limited to solving my bridging problem with solder thieves; all process/wave variables have been adjusted to try to solve this problem. There are several of these connectors on
Electronics Forum | Thu May 26 08:52:42 EDT 2011 | davef
Phil Zarrow wrote a useful paper that could help in evaluating paste. Here read it ... Evaluating Solder Paste � Not An Option Contributed by Phil Zarrow of ITM an Independent SMT consulting firm With soldering being the dominant source of assembly
Electronics Forum | Sun May 21 23:29:38 EDT 2017 | zsoden
Hi all, We run an old Seho 1135C wave solder with a 63/37 pot at 250°C. It has been running well for a couple of years but we have noticed lately that all of the larger pads (terminal blocks, transformers, etc.) require additional solder to be appli
Electronics Forum | Wed Nov 17 11:20:23 EST 1999 | Dave F
Hey Gyver: If you don�t mind (which you don�t have any choice about, because I�m going to do it anyhow, cause it�s MY word processor), I�m going to respond genericly, but still be directed to your question. Much of the following is paraphrased from
Electronics Forum | Mon Jul 14 12:55:07 EDT 2008 | arminski
I have a board with the above problem from our PCB supplier. After they applied the solder mask and run the PCB's to HASL process, the solder mask bubbled on one side of the PCB making the solder mask thickness higher and PCB looking awkward. They s
Electronics Forum | Sun Jan 31 22:55:33 EST 1999 | Dennis O'Donnell
| | Hello Netters, | | | | I need some info, Earl or Dave, I have a PCB that exhibits a white layer on solder side. It does not appear to be surface residues (IPA has no effect), but looks like its under solder mask. My first guess is that the LPI
Electronics Forum | Wed Feb 03 04:44:43 EST 1999 | Jeff Sanchez
| | | Hello Netters, | | | | | | I need some info, Earl or Dave, I have a PCB that exhibits a white layer on solder side. It does not appear to be surface residues (IPA has no effect), but looks like its under solder mask. My first guess is that t
Electronics Forum | Wed Sep 09 12:20:28 EDT 2009 | richardli
What is the cause of this discoloarion? Soldermask masterial wrong? Thanks.
Electronics Forum | Sun Jan 31 03:28:24 EST 1999 | Jeff Sanchez
| Hello Netters, | | I need some info, Earl or Dave, I have a PCB that exhibits a white layer on solder side. It does not appear to be surface residues (IPA has no effect), but looks like its under solder mask. My first guess is that the LPI solde
