Electronics Forum | Tue Aug 17 12:03:47 EDT 2004 | mmjm_1099
Do a search on cracked caps in the search bar above. There is lots of past history for alot of us in this area.
Electronics Forum | Wed Aug 31 11:40:24 EDT 2005 | stepheniii
I just had a "how could I have forgotten" moment. By any chance are these double sided boards and the cracked components are on the fist side? If so support pin placement could be the problem. In case more info would be good.
Electronics Forum | Thu Sep 01 04:41:55 EDT 2005 | dougs
We had a problem with cracked caps a few months ago,they were near the middle of the board, turns out it was caused when breaking them out of the panel, changed the panel layout and made them v-scored, problem solved. just an option, there's lots mo
Electronics Forum | Mon Nov 19 21:25:07 EST 2007 | davef
J Webster: Can you send / post pix of your cracked capacitors? What do you think about our assumptions? They are: * No flex in end-item use * Supplier has no defective packaging * No hand soldering of these parts * No impact or flex from ATE * No H2
Electronics Forum | Fri May 17 07:38:30 EDT 2019 | stephendo
If it happened after a high energy event then maybe the root cause is a lack of TVS diodes in the design of the circuit. Or if they are ceramic diodes then maybe they are too close to the edge and have flex cracks.
Electronics Forum | Tue May 21 15:21:20 EDT 2019 | emeto
Matt, believe it or not, but mechanical stress is cracking these internally and you can't see it with bare eye. Consider de-paneling as a root cause if parts are close to the de-panel V-score edge/router tabs. I can send you more information.
Electronics Forum | Tue May 28 02:09:47 EDT 2019 | robl
Back in the day when everyone had turret chipshooters we used to see a lot of cracking due to incorrect z heights, especially where customers swapped between manufacturers.
Electronics Forum | Wed Oct 31 21:52:10 EDT 2007 | davef
We wouldn't expect the ceramic of the capacitor to conduct very much heat. [We're surprised how high the thermal conductivity of Al2O3 is: (30W/m-�C).] Can we assume that you're talking about parts that are defective at incoming inspection?
Electronics Forum | Tue Aug 17 10:37:45 EDT 2004 | M.Enright
Some cracks are really obvious,straight down the middle of the capacitor.Some are slight hair line fractures which fail at ICT.In all cases seen,all cracks are through the centre of the cap.My worry is that there may be some which have fractures and
Electronics Forum | Wed Sep 09 21:20:26 EDT 1998 | Simon Ting
hi, 1206 capacitor with silver/palladium termination is mounted onto a ceramics substrates. Bonding is achieved through conductive epoxy. We discovered that the epoxy cracked and this caused missing capacitor. We had tried different grade of epoxy,
