Electronics Forum | Thu Apr 07 10:39:36 EDT 2005 | geb
I have a BTU International VIP98 reflow oven, running WINCON Version 2.00C on Windows 98. The light tower only lights green when the oven reaches temperature, and the other colours never light up. Do you know how to set the other colour lights to tu
Electronics Forum | Fri Apr 15 11:16:03 EDT 2005 | HOSS
It's a longshot but.....I have seen low-standoff parts move caused by via's under the part erupting from within internal layers (outgassing). If this is a multilayer PCB and vias are not well plated or pourus, they can and will expand when heated.
Electronics Forum | Wed Apr 27 23:23:18 EDT 2005 | pdeuel
It was a resonant frequency that brought down the Narrows bridge. Memorex can shatter a wine glass with resonance. Ultrasonic washers use frequency to do what they do. If anything on the pcb has a length width or mass that resonates at the washers fr
Electronics Forum | Thu Jun 09 12:21:07 EDT 2005 | ratsalad
James, I have worked at a couple of different companies and both have reduced their changeover times significantly. What type of placement machines do you have? Do you use customer part numbers or do you have your own internal part number for co
Electronics Forum | Tue Jul 19 19:10:18 EDT 2005 | chocw
Most of the major chip mounter makers claim that they do have a capability of handling 01005. Like Samsung, Yamaha, Assembleon, Panasonic, etc. But I've never found any screen printer company yet. What is the specification required for selecting scre
Electronics Forum | Tue Jul 19 14:29:12 EDT 2005 | ppwlee
What are possible failure analysis (destructive or non-destructive and what are the pro/cons) I could conduct on the component level (of an IC) to determine failure mode/root cause? We are measuring internal shorts between leads on a SOIC after sold
Electronics Forum | Wed Jan 11 15:01:28 EST 2006 | jsloot
I have a samsung CP40 that is taking an average of 2.5 minutes to load a step program. My CP50 takes about 30 seconds. Both machines are configured the same in regards to the computers, both the operating system and internal CPU for machine functions
Electronics Forum | Fri Feb 10 12:28:05 EST 2006 | jdengler
We do the same as SR Tech but add in a check of the thermocouples the oven uses to monitor it's own temp. Annually I attach a thermocouple from a calibrated thermometer to the thermocouple in the oven. I compare the readings. We specify a plus min
Electronics Forum | Mon Feb 13 07:44:12 EST 2006 | Chunks
That's why I parallel ported the T/C's. Now I can use a calibrated hand help thermocouple and plug into the T/Cs on the oven. If they're within about 3 degrees of each other, then they're considered within our specification. Paper work on the hand
Electronics Forum | Mon Feb 13 07:49:31 EST 2006 | Chunks
Hi Grant, Most inspectors want your oven temps close to what you normally run your product. I've had to show both glue and past profiles on every oven before. Then they want to see if you are matching the profile specified by the manufacturer. I
