Electronics Forum | Wed Apr 25 10:53:49 EDT 2001 | wbu
Zam_bri: If it were a mystery .... there can�t be any answers . Possible causes: - Short is in the PCB ( not very propable, cause you�ve checked that ) - Short is in the BGA ( not very propable, cause you�ve checked that ) - Short occurs due to so
Electronics Forum | Tue Sep 01 20:36:05 EDT 1998 | Rin Or
| We are experiencing shorting on a BGA. The part has a 1mm pitch with a 196 I/O count. The problem seems to pop up without warning & disappear in the same manner. | Our pad design is .020" diameter pads with .025" solder resist diameter. The ce
Electronics Forum | Mon Jul 07 21:08:17 EDT 2003 | sam
I have an experience about AOI that it is necessary in a complicated PCB. Due to the final circuit design, the concerned PCB were having nets on the boards, that the Open/Short could not be identified by traditional In-Circuit testers. Some long tr
Electronics Forum | Wed Sep 13 12:01:26 EDT 2000 | Wolfgang Busko
Hi Charly, short question, short answer: excessive mechanical influence often in combination with bad solderjoint itself. For bad solderjoints there are many many reasons, process and material related. Are there any special circumstances that made y
Electronics Forum | Thu May 17 07:58:25 EDT 2001 | Bob Willis
I think the answers to the problem have been given but if anyone wants to see this happening and solder shorts forming during corner warp there is a video clips on BGA shorts to download. Its available free on http://www.bobwillis.co.uk It should am
Electronics Forum | Wed Apr 25 13:28:12 EDT 2001 | davef
You can make bare BGA balls short together, depending on how you choose to heat the device. Lookit .. [http://davesmt.50megs.com/pictures/ select bgashortng.avi]
Electronics Forum | Wed Jun 12 22:35:03 EDT 2002 | jkhiew
We had alot of problem with melf diode short together after reflow soldering. The clearance is about 0.8mm & we used "v" shaped opening . PLease comment !
Electronics Forum | Thu Jun 13 03:15:01 EDT 2002 | jkhiew
Hi Jax, After component placement, all melf diodes being checked & found no touching each other. Unfortunately, after reflow those MELFs are shorted.
.gif)
