Electronics Forum | Mon Oct 12 01:05:47 EDT 2020 | SMTA-64386317
Than, shall try to find 10 boards with mixture of good and bad samples. Measure it with three different operators and three different times. It will able to tell, machine repeatability and how to troubleshoot it.
Electronics Forum | Thu Apr 15 00:26:38 EDT 1999 | Owen
| I need help in finding solder paste measuring equipment. | No matter what measuremnt system you purchase, make sure that you perform a Gage R&R study to determine whcih system can meet your standards. Most manual measuremnt systems cannot adequa
Electronics Forum | Thu Apr 15 00:32:16 EDT 1999 | Owen
| | I need help in finding solder paste measuring equipment. | | | No matter what measuremnt system you purchase, make sure that you perform a Gage R&R study to determine whcih system can meet your standards. Most manual measurement systems cannot
Electronics Forum | Thu Aug 16 13:57:30 EDT 2001 | Hussman
Ouch! I thought that went away 12 years ago! Visual inspection to IPC standards should be used. Pulling and pushing leads is not even close to being consistent. I bet your customers or ISO auditors have never seen this practice. If they must pul
Electronics Forum | Thu Jul 26 14:55:17 EDT 2001 | mparker
Why not a stink bomb during regular work hours? (If you can get any methyl mercapton, that stuff is very odorific. Smells like baby's barf. A little dab'll do ya!) That way you could gage the complaint ratio as time goes by. Could save you much elbow
Electronics Forum | Wed Jan 28 10:14:03 EST 2004 | danielinsa
All � I am trying to change my rating method for end item assemblies provided by my CM. I am currently using a simple yield method based on total PCBA�s received vs PCBA�s rejected. I have considered PPM but am leery due to the high mix rate and fluc
Electronics Forum | Sun Feb 27 21:39:26 EST 2005 | smtuser1234
First thing is you should be using a 08MPFX nozzle for a 0603 part if you are using a flex head. Then to check the vacuum you should have received a vacuum gage with a nozzle tip that fits on to your spindle and then you turn on the vacuum in diagnos
Electronics Forum | Fri Oct 07 09:05:12 EDT 2005 | chunks
There's a ton of em'. We used the one from Paul N. Gardner Company, part # WF-CCD. They cost 0.95 each, so if someone decides the gage looks better in their garage, it's not that big of a deal. We set up a program that puts down 4 stokes on a test
Electronics Forum | Thu Feb 16 09:00:35 EST 2006 | russ
Samir, You are a nut! I wouldn't cut your hands off! I asked because I was wondering about the stability and repeatability of the wave machine itself being used as the standard. I do understand Gage R&R or at least I think I do that was why I aske
Electronics Forum | Mon Nov 27 08:05:50 EST 2006 | davef
There is no standard for a strain gage measurement of allowable deflection of a board or a fixture. It's possible that your fixture is causing the BGA cracking that you see. What protion of the BGA is cracking? If it is the solder connection, sear
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