Electronics Forum | Wed Apr 24 21:34:01 EDT 2002 | davef
Search the fine SMTnet Archives. Guidelines * Control: Flux specific gravity, preheater temp, conveyer speed, solder temperature. * Two most important parameters are: solder temperature & dwell time * Contact time. The optimum contact (dwell) time
Electronics Forum | Mon Oct 13 17:50:30 EDT 2003 | davef
IPC-7530 "Guidelines for Temperature Profiling for Mass Soldering Processes (Reflow & Wave)" As you observe, the temperature you measure will depend on what you are measuring. For instance: * Hottest temperature in the oven - air in the oven * Hott
Electronics Forum | Tue Sep 26 10:22:51 EDT 2006 | SWAG
Histogram: Place standard tooling block in centernest. Jog camera over block. Jog z-axis to soft limit. Place a white card under camera. User mode to test. Turn board lamp on. From test menu, select histogram. With board lamp on and white under camer
Electronics Forum | Mon Nov 05 19:37:32 EST 2007 | davef
You weren't specific about the frequency band were you're operating. So, let's pound a couple of stakes in the ground. * Conventional tin-lead plating of 200-300 �m is quite satisfactory for lower frequencies in the range of 2GHz. * At frequencies h
Electronics Forum | Mon Dec 05 17:46:10 EST 2022 | SMTA-64387381
Does anyone have experience with routing through areas of PCBs with Cu traces running through them. Trying concept to design in functional "wing" portions to our main board in an effort to get 2 in 1 functional boards - a fully functional main PCB
Electronics Forum | Tue Apr 24 12:34:44 EDT 2001 | 061032
Hello all, Has anyone out in SMT land have any feed back on the Fuji Cp743 placement machine. We have older CP4-2 machines and they have held up pretty well...but we jumped on the Siemens band wagon 18 months ago and whamo...we have had more servic
Electronics Forum | Wed May 02 22:33:44 EDT 2001 | davef
Silvio Dante (played by former E Street Band Guitarist Steve Van Zandt, in his acting debut) has even turned an extremely passing resemblance to Al Pacino [Godfather, Part III] into a personality; he�s forever curling down the corners of his mouth an
Electronics Forum | Fri Feb 14 22:02:04 EST 2003 | caldon
DAVE- The way we got around it was simple- Our Mole for profiling is RF and the cell phones would interupt the data transfer so we nixed all cell use. Also, our BTU oven was in constant RF communication with our KIC and so cells were band from the fl
Electronics Forum | Fri Oct 01 13:14:10 EDT 2004 | dorklover664
The MPM's are the Yugo's. You can fix anything on it with duck tape and a rubber band. I would go with the DEK. They are user friendly and reliable. Just make sure that if you are running double-sided boards to look into good push-up pins. They have
Electronics Forum | Wed Jul 05 16:26:51 EDT 2006 | flipit
I had one SMT process engineer using rubber bands to hold a connector on second side reflow. Even the operators told him he was nuts. The zero stick through on leaded devices has come up several times for me. We clip leads first and pin in paste t
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