Electronics Forum | Sat Jul 25 04:48:40 EDT 1998 | Stoney Tsai
Hi, good friends I found this site is so wonderful to learn SMT techniques meaningfully. We now employ 3 Fuji GL-541 dispensors and raw material with Soma IR-120. but we found glue string casually. From my experience from trouble-shooting the cabinet
Electronics Forum | Sat Oct 06 08:36:04 EDT 2001 | davef
Your point about thermosets getting soft in the preheater of the wave is well taken. But an adhesive that is used past its expiry or other up-front lack of process control represent 99 & 44/100 percent of the reason for �glued parts falling off in
Electronics Forum | Mon Mar 11 11:11:38 EST 2002 | slthomas
Tahnk you for posting the charts. > > They look > very useful, but I have a silly question: In > reflow problems _ What is "leaching" ? Dissolution of the component metallisation into the liquid solder. _ > What is "Halo effect" ? "...a
Electronics Forum | Mon Jan 27 18:47:10 EST 2003 | jonfox
I'm a former Q/M/Tyco field guy, what was so bad? I know the guys in tech support, and as far as I'm concerned they are all top notch guys when it comes to troubleshooting and finding problems with their equipment. Not only that, but the Quad machi
Electronics Forum | Fri Sep 13 14:22:37 EDT 2002 | davef
If that's the case, it's most likely the radio is bad. Again, I'm not clear, but it sounds like using the MD is the trigger to shut the player down: * Stop using the MD. * Fix the MD or some of the associated power supply regulation circuitry. For
Electronics Forum | Mon Nov 25 20:38:39 EST 2002 | davef
That's basically it. In a wonderful world, the oxides flow on top of the flux during heating through reflow. Obviously when compared to reflow soldering, you create much more dross with your wave by: * Pumping a large volume of very hot solder to h
Electronics Forum | Fri Jan 17 11:21:01 EST 2003 | Brian W.
You can Cpk numbers for the DEK using the QcCalc software. Simply connect a computer to the RS232 port on the DEK and follow the instructions. The program can give you Cp, Cpk numbers for a number of parameters, including X alignment, Y alignement,
Electronics Forum | Mon Feb 03 23:49:00 EST 2003 | Dreamsniper
Hi, Has anyone who's using vapor phase process able to help me troubleshoot tombstoning? I raed about uneven forces during reflow due to misalignment, pad design, paste volume deposition unevenness due to dirty stencils, worn stencil printer parts s
Electronics Forum | Tue Jul 22 06:41:40 EDT 2003 | davef
bga void doe * Dr. Lee at Indium Corp. has conducted a number of investigations concerning solder joint voiding and BGA components. Check Indium's site. [As an aside, Lee's book "Reflow Soldering Processing and Troubleshooting SMT, BGA, CSP and Flip
Electronics Forum | Wed Sep 01 19:28:50 EDT 2004 | Enrique
Hello. I have a question, i don't know if any one of you can help me. The same screen printer comes with a small thermal printer: Panadac-931-02-A; I wan't to use it for another application, but I need the drivers in order to print from a Windows ope
