Electronics Forum | Mon Jun 01 22:56:39 EDT 2009 | davef
Reflow soldering de-ages the capacitors. Two things may be affecting your testing. * Capacitance measurements are often erratic during testing for about 10 hours after de-aging. * Test limits should be set so that the capacitance value is within the
Electronics Forum | Fri May 29 15:03:46 EDT 2009 | rway
We have recently begun using X5R dielectric capacitors. Although they have a better temperature coefficient over Y5V, they age much faster (5-7% logarithmically per decade). I assume the reason for using the X5R was the availability of the capacita
Electronics Forum | Thu Feb 22 20:35:38 EST 2001 | davef
Ah, that was the time. Those locomotives chugging down the tracks with a plume of steam and coal dust rising above and dissipating down the track towards the end of the train. "Driving that Train, High on. . ." [http://www.thespoon.com/trainhop/song
Electronics Forum | Fri Sep 02 13:13:14 EDT 2005 | stepheniii
50% chance his boss has heard of (or maybe even one time seen) delamination and wants to be sure they don't have that problem. His boss probably felt a need to specify a test and that was one he had heard of. Personally I would recomend find a way f
Electronics Forum | Sat Aug 21 08:00:50 EDT 2004 | davef
First, we know of no conformal coating that will help your situation. Second, as you say, companies recognize that stress testing of shippable products is NOT good practice, because it strips life from the product. So, your product is more expensiv
Electronics Forum | Mon Aug 03 01:49:03 EDT 2020 | kathleen123
Please try to use the steam aging tester and make a try ! When the water temp up to +100℃, Put your new model into the water tank. This +100℃ hot and steam water may remove the paste in via hole. Thank you. https://www.wewontech.com/steam-aging-
Electronics Forum | Wed Aug 15 01:30:56 EDT 2007 | wayne_
To be more specific. I am actually talking about the electrical fatigue whereby a unit is undergo a cyclic electric test. Unlike thermal fatigue, it is all talking about temperature related testing, eg, ageing test, thermal cycle test, etc. Anyone of
Electronics Forum | Wed Dec 15 10:48:23 EST 2004 | gopinath A
I heard that Steam Aging (storage) tests would be inappropriate for gold finishes. Is this a correct statement? If so, what are the reasons? How bad is the shelf life of ENIG
Electronics Forum | Thu Mar 22 03:26:42 EST 2001 | moseschee
Hi Dave, Thank you for your reply.It means a lot to me. By the way, is it possible to have the analysed data on the study you mentioned regarding the solderability "conditioning " ? Can we establish the correlation of solder shelf life based on y
Electronics Forum | Thu Nov 26 03:59:50 EST 1998 | Chi-Ting Chen
I have some 1.25 mils Al wire bonding chip on board process. After epxoy-based encapsulation, I do some aging test. How can I "see" or prove that there is a "wire break" exist due to the tension of thermal cycling? How can I know the failure is cause
