Electronics Forum | Mon Aug 08 21:43:23 EDT 2005 | plcc
Hi Davef, After reflow, the pcb board turns yellowish color. However, the board still pass thru' functional test.
Electronics Forum | Mon Jul 24 13:53:38 EDT 2006 | Chunks
Usually when someone is just guessing on what to t-shoot, they will always choose the most expensive part. BGA, QFP, GPS Module....... Same groups believe you can get rid of defects by wearing smocks.
Electronics Forum | Tue Jul 25 08:34:30 EDT 2006 | GS
Does your board passes also through the wave solder step ? If, yes, it could be a matter of secondary reflow on BGA ball solder joints. Best Regards....GS
Electronics Forum | Wed Nov 10 16:33:09 EST 2010 | esoderberg
I don't. However we perform inline ICT and functional testing on both sides and the first side has never had issues. It is only when we flip the board and start reflowing on the bottom side.
Electronics Forum | Mon Jul 01 04:35:22 EDT 2019 | sssamw
It depends on your product application requirement, normally should not drop off board for automotive. Even the dropped board pass function test in plant, it will have problem in its working environment.
Electronics Forum | Wed Sep 08 19:58:17 EDT 2021 | kylehunter
Yes, we soldered some Mil-Max pins on a functional test board before. Utter nightmare. We managed to finally get them on, but yes, terrible wetting, and they act as total thermal sinks. Make sure to oversize you pads.
Electronics Forum | Fri Mar 08 15:56:11 EST 2024 | kylehunter
That makes a lot of sense, thank you for the answer. Do you have any sample numbers you can share? Like if you build a batch of boards with no functional testing, are you normally expecting 100% pass rate when the reach the customer?
Electronics Forum | Thu Dec 01 21:30:31 EST 2005 | davef
Primary methods used to test assembled circuit boards are: * Automated test equipment [ATE] * Manual bench-top functional test equipment Assembled printed circuit board ATE market segments are: * In-circuit ATE * Functional ATE * Boundary Scan AT
Electronics Forum | Sat Dec 03 03:56:47 EST 2005 | hamidrezamaddah
Primary methods used to test circuit boards > are: * Automated test equipment [ATE] * Manual > bench-top functional test equipment > > Printed > circuit board ATE market segments are: * > In-circuit ATE * Functional ATE * Boundary > Scan ATE
Electronics Forum | Tue Oct 11 03:50:24 EDT 2022 | ky
Hi Everyone, we have here in our EMS supplier some finish goods that pass all our functional test but fail our final burning test. The burning test is a 30 minutes test which simulate customer use cases, during this test the product is subject to tem
