Electronics Forum | Tue Jan 21 13:51:19 EST 2014 | rgduval
Armando, Is the problem in the same spot on the board with every run? If so, there might be something about that particular location that is part of the cause (ie. ground or power plane connection). It sounds like you're seeing blow holes, or insu
Electronics Forum | Sat Sep 21 23:38:06 EDT 2002 | ivanchu
I got one problem from my production line recently. One 0.5mm pitch QFP IC have been used on my PCBA. Actually, the defect was happened in randomly. Sometime, we got the fillet completely but sometime is not. The solder joint look like is good, but t
Electronics Forum | Tue Dec 17 11:01:24 EST 2002 | Tim Marc
Hello all, One of our PCB manufacturers coated a through hole connecters vias with solder mask. The only IPC references that comes close to describing this problem is 2.9.2 Registration to holes, and subsequent specification 6.3.1 PTH � Vertical fil
Electronics Forum | Tue Feb 19 19:36:21 EST 2002 | davef
You weren�t clear but I assume the problem is not widely distributed and affects only a few parts on each board. Do this trick: * Cut a ~1� piece of fairly serious wire, like 18 or 12 AWG. * Strip the insulation. * Gear-up with gloves, glasses, and
Electronics Forum | Thu Aug 26 13:09:08 EDT 1999 | Doug
I am building a board with T1/34 LED's in a 10X10 array there are 12 arrays in a panel. The LED's are body to body in the array, .1 spaced. The LEDS have been autoinserted on a Universal RAD III, so they are cut and clinched. The trouble I am having
Electronics Forum | Mon Aug 30 16:14:58 EDT 1999 | Dave F
| I am building a board with T1/34 LED's in a 10X10 array there are 12 arrays in a panel. The LED's are body to body in the array, .1 spaced. The LEDS have been autoinserted on a Universal RAD III, so they are cut and clinched. The trouble I am havin
Electronics Forum | Fri Jun 12 14:22:53 EDT 1998 | Ryan Jennens
| Hey all! | The wave solder warrior is back. I have found a flux which leave almost no residue (the least yet), but because of its super low solids content I absolutely cannot get topside fillets. The multi-layer, two sided board is on a pall
Electronics Forum | Fri Aug 27 13:34:25 EDT 1999 | Brian Larson
If your through holes are overlarge or the anular rings too small, the surface tension of the wave may exceed that of the joint. I would look at the design. You may want to put a strip of kapton tape on the following edge of the panel to test the "
Electronics Forum | Fri Aug 27 14:38:54 EDT 1999 | Doug
Brian, Thanks for the input. The hole size is good but the anular ring is small. I have helped the condition by reducing the clinch on the LED's. This I believe is reducing the pull out path. Thanks again | If your through holes are overlarge or th
Electronics Forum | Fri Jun 12 15:56:43 EDT 1998 | Ryan
| | | Hey all! | | | The wave solder warrior is back. I have found a flux which leave almost no residue (the least yet), but because of its super low solids content I absolutely cannot get topside fillets. The multi-layer, two sided board is o
