Electronics Forum | Thu Jul 01 14:47:10 EDT 1999 | Tony
| | | My guess would be trapped flux continuing to be active after soldering. Is the tarnish there immediately after exiting the machine? Do you remove the mask and wash right away? If the solder is reflowing under the mask on the component side
Electronics Forum | Wed Feb 07 21:58:38 EST 2001 | davef
We are reviewing our shelf life policy and have the following items listed as shelf life sensitive: Printed circuit boards, peelable solder mask, solder paste, moisture sensitive parts, multiwire printed circuit boards from Icon or Hitachi, NiCd batt
Electronics Forum | Wed Aug 18 22:21:26 EDT 1999 | Dave F
| | We have developed a new process for removing moisture from surface mount devices. We have one site where PCB laminate drying has been reduced to 1.5 hours. A standard oven took 4 hours to do the job. I am looking for a firm who does large scale b
Electronics Forum | Tue Feb 28 11:07:41 EST 2006 | Chunks
Gel Flex works for Dek, just a slight modificaion. Works 100% better than any Grid type of system. We had missprints from Grid Lok and Form Flex - about every 5th or 6th board. Until we modified the Gels, we would take the time and some peelable s
Electronics Forum | Thu Nov 10 02:04:26 EST 2011 | julien
We've got the same problem here, what we do is to apply peelable solder mask around the connectors or the exclusion zone. But be carefull! Sometimes the soldermask get inside the connectors and you can't remove it so you have to change it. Another th
Electronics Forum | Sat Feb 19 05:07:28 EST 2000 | Dean
I'm not exactly sure of your problem...but I'll give it a shot. I assume the screw is on the solder side of the board. If you wave solder the screw the head will fill in with solder. Try a water solouble mask or peelable laytex mask over the screw
Electronics Forum | Sat Feb 19 05:07:28 EST 2000 | Dean
I'm not exactly sure of your problem...but I'll give it a shot. I assume the screw is on the solder side of the board. If you wave solder the screw the head will fill in with solder. Try a water solouble mask or peelable laytex mask over the screw
Electronics Forum | Thu Jan 28 17:37:00 EST 1999 | Earl Moon
| | | | | Greetings, | | | | | | | | | | Can anyone tell me what temperatures pcb's should have when coming out of a forced convection reflow oven and out of a wavesoldering machine. | | | | | Also, is there any danger of the pcb's giving off some k
Electronics Forum | Thu Jan 28 17:37:02 EST 1999 | Earl Moon
| | | | | Greetings, | | | | | | | | | | Can anyone tell me what temperatures pcb's should have when coming out of a forced convection reflow oven and out of a wavesoldering machine. | | | | | Also, is there any danger of the pcb's giving off some k
Electronics Forum | Fri Jan 29 07:55:52 EST 1999 | Wayne Bracy
| | | | | | Greetings, | | | | | | | | | | | | Can anyone tell me what temperatures pcb's should have when coming out of a forced convection reflow oven and out of a wavesoldering machine. | | | | | | Also, is there any danger of the pcb's giving of
