Electronics Forum | Thu Jan 12 14:17:07 EST 2012 | blnorman
How are the vias failing? Barrel crack?
Electronics Forum | Tue Jan 17 12:06:12 EST 2012 | cobham1
The via's are cracking which then is causing all kinds of problems.
Electronics Forum | Tue May 21 17:22:45 EDT 2019 | stephendo
There are flex caps that are more tolerant of flexing. I don't think they are a lot more expensive. You might want to try a run with them?
Electronics Forum | Thu Nov 13 13:07:04 EST 2008 | vladig
Yes, it does look like a typical crack due to mechanical overloading (bending) of teh component. Usually because of the board flexing Vlad
Electronics Forum | Tue Feb 23 09:48:26 EST 2010 | dyoungquist
How are you sepatating your boards out of the panel? If you are flexing them to break the V-score, this could be what is causing the resistors to crack.
Electronics Forum | Wed Nov 25 17:21:17 EST 1998 | Michael Allen
A word of caution: thick webs (i.e., shallow score grooves) can result in scrapped boards, especially if you've got the dual-wheel-type score breaking machine. I discovered recently that shallow score grooves, combined with DULL knife-edge guides on
Electronics Forum | Wed Feb 02 08:51:25 EST 2005 | Dougs
we have a capacitor cracking on one of our boards, there are four of the same cap on the board and only one cracks, we are seeing about 6% of the component cracking. it's not near the edges of the board and he board is 2.4mm thick so i dont think it
Electronics Forum | Fri Jun 03 10:11:08 EDT 2016 | tnisbet
If you end up buying a depaneling machine/robot, > the guys at Pentagon EMS are very good at making > fixtures. Once they have the specifications of > your machine all you will have to send them is > your panelized drawing of your board. In extre
Electronics Forum | Wed May 22 07:31:13 EDT 2019 | stephendo
Try this link https://www.digikey.ca/products/en/capacitors/ceramic-capacitors/60?k=flex+caps&k=&pkeyword=flex+caps&sv=0&s=50730&s=21887&s=32803&s=5859&sf=0&FV=ffe0003c%2C1f140000&quantity=&ColumnSort=0&page=1&pageSize=25 It should get you started.
Electronics Forum | Thu Apr 22 07:51:32 EDT 1999 | Vic Lau
after soldering transistors on a flex circuit (Ni/Au plated), one of the lead lift-up from the pad. under microscope (1,000 X), i find some cracks on the the pad surface. with edx analysis, the surface is mainly nickel. have you ever encounter suc
