Electronics Forum | Thu Mar 30 04:42:28 EST 2000 | cpgoh
HI all, thanks for the advise.. Electrovert is being used from 7am to 7pm and we do dedross from the surface of the solder bath during lunch time around 12nn. Break Time we just sweep them to the side.. Every two week, we do the solder bath maintena
Electronics Forum | Fri Mar 10 08:42:40 EST 2000 | John
We're quoting out a new board design, and one of the prospective suppliers is pitching a silver coating process over hot air leveling. We haven't had experience with boards of this type, and I am concerned about any processing issues that may come u
Electronics Forum | Fri Mar 17 07:51:49 EST 2000 | Peter Barton
John, I have had previous experience of immersion silver coated PCB's in place of HASL coated type using no-clean processing with little or no problem at all. All of the process parameters were left unchanged. There is a very minor difference in th
Electronics Forum | Mon Mar 13 14:41:22 EST 2000 | Boca
By Hot Air Knife I assume (leave it alone Dave F.) that you mean a debridging knife located at the exit end of a wave solder machine. Russ is right, they are not a good substitute for a good process, but once the process (w/o HAK) is developed, it
Electronics Forum | Mon Mar 13 14:45:01 EST 2000 | Boca
By Hot Air Knife I assume (leave it alone Dave F.) that you mean a debridging knife located at the exit end of a wave solder machine. Russ is right, they are not a good substitute for a good process, but once the process (w/o HAK) is developed, it
Electronics Forum | Tue Feb 29 13:18:16 EST 2000 | Steve Schrader
We have what appears to be a recurring problem. On immersion gold boards only, we are having solderability problems. After reflow, selected parts can be popped right off the board. There is then a dark haze left on the pad. The paste on the compon
Electronics Forum | Mon Feb 28 19:36:39 EST 2000 | Tony
I work for a contract manufacture of PCB's, we are also in the BGA rework business. We see all kinds of different size boards, as well as different types of BGA's and micro BGA's. We selected the Conceptronics Freedom 2000 over the Air Vac and SRT. T
Electronics Forum | Thu Feb 17 03:53:24 EST 2000 | Scott Cook
It is with some regret that I find that feel that I can no longer contribute to this forum with the same zeal I once had. The forum old timers will remember when I was a leading respondent to technical questions. Many issues drive me to this decisio
Electronics Forum | Tue Jan 16 21:27:56 EST 2001 | davef
No we do not use such a storage unit. We say our preferred environment is within: * 30%RH / 84�F * 30%RH / 72�F * 70%RH / 78�F * 70%RH / 68�F J-001C says [words to the effect of]: * At 30%RH and below you�d better make sure your ESD control program
Electronics Forum | Tue Feb 06 13:02:36 EST 2001 | kmorris
Hi all: We are seeing "solder webbing" on the bottom side of some of our PCBs after wave solder. The solder is sticking (like a spider web) to the solder mask on the PCB. This is only happening on 2 of the many PCBs we wave on that machine. Both o
