Electronics Forum | Wed Dec 09 18:56:40 EST 1998 | young
Dear everybody : Does anyone have some information about "bleeder pad"? it seems a method to avoid solder shorts across very small SMT pads.If someone have any idea about it, please contact with me , thanks !
Electronics Forum | Sat Apr 25 08:48:45 EDT 1998 | raymond
Is there an industry standard in calculating SMT process PPM level for benchmarking purpose ? What are the industry benchmark ppm number for some of the defects like solder short for 20-mil QFP, tomstone problem for 0603 components etc....
Electronics Forum | Thu Aug 01 04:12:39 EDT 2002 | jk
Anyone have experience with BGA mount on via hole in pad. I'm encountering about 1 to 2% yield loss due to BGA solder short. This is an entek PCB. The BGA pad size is 32 mil, and the via hole (dia. 10 mil) is at the center of the pad. Any professiona
Electronics Forum | Fri Dec 27 14:11:18 EST 2002 | cnotebaert
We have placed these parts. I have not had problems with them but when I designed the stencil we reduced the app for the large thermal by 20% to reduce the chance of problems like your having. If the balls are close (.040-.050" or
Electronics Forum | Mon Dec 30 13:52:50 EST 2002 | bcceng
Haran, This problem can also be caused if the BGA package is POPCORNING. Popcorning causes the BGA package to expand below the die, seen this happen so often to customers that try to install BGA's themselves without the proper handling of BGA's. Tha
Electronics Forum | Wed Feb 19 22:08:21 EST 2003 | davef
We usually end-up emailing reports and pix to each other. Fire a copy off to me.
Electronics Forum | Mon Apr 04 08:48:33 EDT 2005 | jimih280
that depends on clinch direction, length, and angle. .200" hole center to center is usually safe for all automatic insertion equipment.
Electronics Forum | Thu Apr 21 11:49:24 EDT 2005 | russ
Definitely would help when doing the search's. I always find a numerous amount of suggestions but you're right, you never know if anything worked! Russ
Electronics Forum | Thu Apr 21 12:39:10 EDT 2005 | patrickbruneel
Thanks Russ I must have caught you on a good day I'm not used to see you agree with me. Just kidding (couldn't resist)
Electronics Forum | Mon Mar 13 04:18:42 EST 2006 | pedestrian
0.2mm gap between parts is small and easy to solder short. I prefer 5mils or 4mils.
