Electronics Forum | Wed Feb 09 13:07:01 EST 2000 | Jeff Woodruff
I have seen an issue that escapes our ICT and functional testing or operates in an intermitent fashion. The lead is slightly separated from the PCB with a fully formed solder joint behind it at the heel an toe. The joint apears to have started to tra
Electronics Forum | Thu Nov 01 14:40:26 EDT 2007 | ck_the_flip
Electrically testing components is an age-old practice of the past. True "world class manufacturers" like to minimize, or even eliminate incoming inspection of ANYTHING - the theory being....a world class manufacturer should have such awesome relati
Electronics Forum | Thu Dec 12 17:48:21 EST 2019 | davef
You proved that the standard solderability test of components may be effective for assessing aged components. Curious Minds Can you get the authorization to use a more aggressive flux? Will that flux solve the problem? What's it going to cost to qu
Electronics Forum | Wed Dec 20 22:54:28 EST 2006 | fastek
I think that in this day and age.....if you are not testing the feeder via some sort of indexing proceedure while the feeder is off of the machine.....you are simply not going to be certain the feeder is working properly. The Alternative SMT jig do
Electronics Forum | Thu Jun 13 08:32:24 EDT 2013 | rway
Have you verified the measurements on the bench with an LCR meter? Chances are you are experiencing aging with these ceramic caps. We have similar issues with X5R and X7R caps. You will see the effects of aging with returns from the field as well
Electronics Forum | Thu Feb 15 19:41:38 EST 2001 | davef
What do you mean by "But after performing temperature cycle test, the former aging rate (from the shear strength ) seems faster than the latter."? Comments are: I can't recall having heard the term "precipitation hardness" [not that that means anyt
Electronics Forum | Sat Feb 14 19:35:51 EST 1998 | C. Lao
Mr Lao We have some specialist knowledge on this subject and offer both equipment and services for these tests. My first recommendation is that take coupons manufactured by your PC Fabricator and then samples at each manufacturing stage: Bare coupon
Electronics Forum | Tue Mar 04 09:12:35 EST 2008 | davef
Q1. What would you recommend for the best practice or comparison? A1. We'd go with dip & look. It's easy and cheap, requires no advanced degrees in measurology. Have you reviewed "J-STD-002B - Solderability Tests for Component Leads, Terminations, Lu
Electronics Forum | Mon Dec 01 14:40:54 EST 2008 | snaggletooth
DC powered Power-up and ageing burn-in equipment, preferably non-product specific, starting from room temperature down to -41 degrees celcius and up to +71 celcius at a rate of 7 celcius per minute. But anyone who could suggest a manufacturer would b
Electronics Forum | Mon Dec 01 07:37:07 EST 2008 | snaggletooth
PCBA Burn-in testing: We need to test some products from -40c - +71c and need some testing equipment for it. We have some burn-in equipments but not at the this temperature range and not at the 7c per minute change rate that is needed. Anyone have so
