Electronics Forum | Thu Sep 02 16:06:33 EDT 1999 | Earl Moon
| Has anyone done or seen any studies done documenting what may be the affect of hardware such as screws in the parimeter vicinity of BGAs on a circuit board? | | What I'm really after is anything describing how close a screw/washer/nut combination
Electronics Forum | Thu Sep 02 16:37:23 EDT 1999 | R Scheller
| | Has anyone done or seen any studies done documenting what may be the affect of hardware such as screws in the parimeter vicinity of BGAs on a circuit board? | | | | What I'm really after is anything describing how close a screw/washer/nut combin
Electronics Forum | Thu Sep 02 16:52:31 EDT 1999 | Earl Moon
| | | Has anyone done or seen any studies done documenting what may be the affect of hardware such as screws in the parimeter vicinity of BGAs on a circuit board? | | | | | | What I'm really after is anything describing how close a screw/washer/nut
Electronics Forum | Tue May 06 14:52:37 EDT 2003 | bremerg
Pictures are now located at http://www.stevezeva.homestead.com/ These components are 2W resistors that only see 1/2W at max. during normal use. I have contacted IRC still wqaiting for a response. The resistors were tested as good. But the circuit
Electronics Forum | Wed Jul 26 15:28:11 EDT 2006 | RLM
How does the machine sense that the fan is working/not working? The fan may be operational but the sense mechanism may be at fault.
Electronics Forum | Sat Jul 05 14:07:33 EDT 2008 | shellydhami
Main diffrences in failure modes for mechanically and thermally induced BGA solder joint fracture
Electronics Forum | Wed Aug 22 12:44:26 EDT 2012 | rway
I would look at your de-paneling process. How are you cutting the boards? This could be inducing mechanical stress on the component; especially if the part is close to the edge of the pcb and perpendicular to it.
Electronics Forum | Wed Aug 22 13:16:23 EDT 2012 | rway
Most likely the depaneling is not your issue, but I do concur that there is some mechanical stress occurring somewhere. What about any fixturing for FT/ICT?
Electronics Forum | Mon Aug 27 04:13:49 EDT 2012 | thmeier
Moisture should not be an issue with ceramics, but mechanical or thermal stress definitely is. Has there been rework on this capacitors? So check for handling /temperature of your soldering irons (better:use hot air). Check oven temperature/profile
Electronics Forum | Fri Jul 27 12:21:18 EDT 2012 | tpatrickwalsh
I am posting this here because I think it may have something to do with PCBA: I have a simple battery-powered consumer product (LED light) that we have been manufacturing for some time. All of a sudden in one batch, we have about a 4% rate of a sing
