Electronics Forum | Wed Dec 23 03:33:14 EST 1998 | Charles Stringer
Can anyone recommend a solder stop that can be applied by our PCB supplier. Our current material form Tamura Kaken is causing problems. The material should be capable of withstanding 1 Surface mount IR reflow cycle and 1 wave solder cycle. We need t
Electronics Forum | Tue Dec 29 17:42:27 EST 1998 | Dave F
| Can anyone recommend a solder stop that can be applied by our PCB supplier. Our current material form Tamura Kaken is causing problems. | | The material should be capable of withstanding 1 Surface mount IR reflow cycle and 1 wave solder cycle. | W
Electronics Forum | Sun Sep 08 15:07:42 EDT 2013 | davef
PCB designers specify the application of solder mask [eg, varnish, solder stop mask, solder resist, etc] to fabricators to reduce the potential of bridging between two conductive traces during assembly soldering processes [eg, wave, reflow and hand s
Electronics Forum | Sat Oct 06 08:32:09 EDT 2001 | davef
Mr. Wizard is not currently available. You get the wizzer. Maybe your dream date will show later. Get your own lab tests done. Show your potential customer that your boards are clean. That�s the issue. The issue is not how you go about cleaning
Electronics Forum | Tue May 04 05:06:31 EDT 1999 | Dietrich Habel
Does someone has experience with solder stop on components to avoid an Viking effect (no solder on the pad, all solder on the lead)? What kind of solder stop does work well? What is dangerous? What has to be kept in mind when using such components? B
Electronics Forum | Tue May 04 10:38:24 EDT 1999 | Dave F
| Does someone has experience with solder stop on components to avoid an Viking effect (no solder on the pad, all solder on the lead)? What kind of solder stop does work well? What is dangerous? What has to be kept in mind when using such components?
Electronics Forum | Thu Jan 20 13:56:51 EST 2022 | stivais
For me it seems that the board is already assembled & soldered. Before assembling the board had been (poorly) washed (misprint perhaps) and the spots are just melted solder paste. Aren't those solder balls in the grooves between the pads and solder
Electronics Forum | Fri Jan 21 12:36:52 EST 2022 | stephendo
Like I said a lot of people don't tape the gold fingers the first time they run them. After that they make sure the fingers get taped up because solder gets places you don't think it does and once it touches gold, that gold is contaminated. How do y
Electronics Forum | Wed Jan 21 16:55:22 EST 2004 | patrickbruneel
Hi, Are you testing bare boards or soldered boards. Are the test probes in contact with soldered pads or contacting the copper with the osp coating (not soldered). If you could clarify this it would be easier to give some hints for probable causes.
Electronics Forum | Fri Jan 21 06:35:51 EST 2022 | stivais
"Manual washing" of a misprint board basically is smearing of printed solder paste all over the board. And trying to remove (wipe off) it afterwards. So for me it would not be any surprise that the solder paste ended up on the pads where it was not i
