Electronics Forum | Tue Dec 02 18:10:39 EST 2008 | sys_steven
Need your opinion guys.. The old timers at the plant here feel that we should clean our board after Misprints withe the solvent cleaner over water wash. This is so they don't have to rebake the pcb for 24 hours before smt again. I don't believe th
Electronics Forum | Fri Apr 10 13:25:08 EDT 2009 | jefflkupkt
Layer 2 is the ground plane layer of a 4 layer board. After installing a 2.5 mm DC power jack and 0.1 center SIP header by hand, the ground pin disconnects and causes an open. My board supplier said they passed Electrical Test. Prepreg was within
Electronics Forum | Thu Jun 28 09:40:49 EDT 2012 | austinpeterman
We just stepped into the inline wash world with a techical devices new clean galaxy plus. We are noticing a significant amount of foaming when washing our boards after selective solder. One theory is that the water soluble flux used is not being cu
Electronics Forum | Mon Sep 17 05:48:10 EDT 2012 | stivais
Hi Ben, Yes, this could be the reason but have you ever seen solderability issues for (new) boards with LF-HAL surface finish? I have seen this only if there are surface finish quality issues for bare boards (exposed copper etc.). In this case we di
Electronics Forum | Thu Feb 12 21:14:37 EST 2015 | kahrpr
They are both very good machines however Kohyoung will give you better first pass results meaning a lot less false calls and when you run the first board after initial programming you have to fix very few things. However the cost is a lot more. This
Electronics Forum | Mon Sep 14 08:10:34 EDT 2015 | iamera
Hello Our production face a problem where our board after etching become shrinkage till 0.09mm but sometime it can be till 0.18mm. this happen after etching still the beginning of process not count for silver through hole and carbon process where th
Electronics Forum | Tue Sep 01 16:47:25 EDT 2020 | charliedci
The problem that we have seen applying NC flux (EF2210) at selective solder is that the flux overspray (relative to the nozzle path) did not see high enough temperature to activate the flux and turn it to a non-conductive, benign residue as one would
Electronics Forum | Mon Oct 12 17:28:39 EDT 2020 | rgduval
Check the microphone data sheet to find out what the max temperature is...if it's not listed, call the manufacturer. Are you water-washing the board after assembly? Could be water intrusion/entrapment in the microphone. Again, check the data she
Electronics Forum | Wed Apr 28 06:26:15 EDT 2021 | jeremy_leaf
@Evtimov I can't use flux as the components being soldered can't cope with any contamination whatsoever. Even an ultra low solids no-clean flux will be too much. I also can't clean the boards after soldering due to any residual contamination from the
Electronics Forum | Fri May 27 14:21:27 EDT 2005 | Frank
Back in the day, we had a small solder pot used for dipping ICs that were freshly removed from defective boards. What tool did we use to clean the dross? A small piece of card board. After the card board got too toasted, we'd grab a new piece of c
.gif)
