Electronics Forum | Tue Jan 22 22:23:48 EST 2008 | amarpreet41
Thanks, I am working on to prevent solder bridging. Tried fine tuning reflow profile, solder printing looks fine. Any further ideas??
Electronics Forum | Wed Sep 01 05:23:08 EDT 2010 | leeg
We are having solder bridges on a fine pitch QFP and was wondering whether printing speed directly affects the bridging and is there a typical formula to work out print speed?
Electronics Forum | Tue Apr 09 12:08:25 EDT 2013 | zinalnpatel
I am new into the programming of mirtec MV2-HT and I have tried a lot of things tyo program for the IC bridge inspector but it fails everytime, Can someone please help me learn the programming of IC bridge. Thank you
Electronics Forum | Fri Jun 30 15:34:09 EDT 2023 | calebcsmt
Doesn't IPC specify bridges are only unacceptable when uncommon, therefore if the leads were connected via trace wouldn't this classify them as common therefore acceptable? Would it be safe to say, at least from a electrical stand point its acceptab
Electronics Forum | Fri Apr 21 14:58:04 EDT 2023 | rgduval
I mean...there are a ton of possibilities for bridging on selective solder before you ever get to alloy purity. Are the bridges happening consistently in the same spot? Are the leads too long? Can you modify the approach/exit/peel off to address? Wh
Electronics Forum | Mon Jul 03 16:47:19 EDT 2023 | calebcsmt
Well noted - and makes sense. Though 'technically acceptable' from an electrical/functional stand-point, unless it was called out within documentation/discussed with the customer, it should still be looked at as a defect, since otherwise its very amb
Electronics Forum | Wed Mar 24 23:12:48 EDT 2021 | grahamcooper22
0.66 area aspect ratio...so for example...if the device is 0.5mm pitch QFP, the pcb pad may be 12 thou wide..make the aperture 9 to 10 thou wide...and reduce it's length by 10 % overall compared to the pcb pad.... Depending on device pitch, select ap
Electronics Forum | Fri Sep 15 05:48:24 EDT 2000 | carsonho
Have any experience that Sn/Pb plated integrated circuit products will appear some rainbowbridge-like substance after exposing at conditions of 121degC, 100%RH and 15psi for 48hours or above? The rainbow bridge substance was analyzed by EDAX and fou
Electronics Forum | Fri Sep 15 05:48:11 EDT 2000 | carsonho
Have any experience that Sn/Pb plated integrated circuit products will appear some rainbowbridge-like substance after exposing at conditions of 121degC, 100%RH and 15psi for 48hours or above? The rainbow bridge substance was analyzed by EDAX and fou
Electronics Forum | Fri Sep 24 09:49:53 EDT 1999 | C.K.
Hi Folks: We've been having bridging problems on our fine-pitch QFP's, despite thorough inspection of paste height, volume, and placement accuracies....profiles look good also. The bridging is happening after coming out of reflow...one last thing t
