Electronics Forum: pass (Page 21 of 142)

MPM UP3000 Question

Electronics Forum | Fri Aug 11 14:05:43 EDT 2006 | mpm fan

Ahhhh. If it only screwed up "consistantly" it would be alot easier!! yeah, bad board or overheat in the card rack (filters), kinked wire? good luck, my guess is it'll get more consistant as days pass

tester compatibility

Electronics Forum | Tue Sep 05 07:51:51 EDT 2006 | Walleyes R' us

Is there an industry standard for compatability between multiple testers? For example, if an assembly fails on one tester, but passes on another? I realize that target is 100%, but with analog testers, this is not going to happen. Personally, I

Local Fiducials

Electronics Forum | Thu Oct 19 14:49:35 EDT 2006 | sliebl

We teach all of the fids. Globals and Locals. This is because we use a magnetic table, not a pass through conveyor. Without showing the machine the global fids, it has no idea where we've mounted the board.

First Pass Yields

Electronics Forum | Thu Nov 09 20:11:58 EST 2006 | darby

Very much agree with Russ, Are your CM's doing final test and assembly? If so I would think that 95% is in the ballpark. If not, very much product dependant.

BTU VIP98 Oven refuses to start

Electronics Forum | Fri Dec 22 09:47:18 EST 2006 | realchunks

Check your battery back up if you have it. If I remember correctly, you may have to manually switch your wiring to by pass a dead battery back-up.

Thermo runaway

Electronics Forum | Fri Jan 26 08:44:40 EST 2007 | dsteffler

Had the same thing happen here. If the thermocouple line shorts out the temperature appears to go runaway (999F or whatever the max of your software is). Ours was a short out in a socket where the thermo plugged in to pass through the frame. Regar

Blindage soldering

Electronics Forum | Thu Feb 08 08:25:57 EST 2007 | realchunks

Your risk is very high that the solder paste on the blind parts will dryout and hole the parts to the board but not actually reflow. They will pass electrical test but fall off in the real world. Blind soldering is a very high risk process.

Reflowing BGA's 2x on a double sided board

Electronics Forum | Thu Mar 01 11:47:20 EST 2007 | Wagoner

Run the lead free BGA side first. Then run the tin lead side second. We do this on some boards so that we don't overheat the components on the second side. There is no reason that the lead free solder needs to reflow on the second pass.

IEC - 60601 compliant LF-NC Wire Solder

Electronics Forum | Fri Jun 01 17:32:31 EDT 2007 | Chris

Im having problems with electromigration post a IEC - 60601 test (95% humidity for 48 hours). Im looking for a lead-free NC wire solder that will pass. Does anyone know of any that will work? Thanks, Chris

IEC - 60601 compliant LF-NC Wire Solder

Electronics Forum | Fri Jun 01 17:34:19 EDT 2007 | Chris

Im having problems with electromigration post a IEC - 60601 test (95% humidity for 48 hours). Im looking for a lead-free NC wire solder that will pass. Does anyone know of any that will work? Thanks, Chris


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