Electronics Forum | Sat Sep 12 10:47:00 EDT 1998 | Jon Medernach
I am aware that the Intel processor is available in a 0.012" leadframe, as a TAB product ( which can be excised and placed with may P&P machines but I do not know of any 0.008" leadframes, Bumped Die are at these pitches and frankly I would bet dime
Electronics Forum | Tue Jul 27 12:45:34 EDT 2010 | kmtan
Hi expert, we have one lead frame product proposed to send to flux clean recently. The problem here is the frame is attached with high temp tape. After flux cleaning the frame, the tape turns out deformed in which we think it was due to chemical reac
Electronics Forum | Mon Sep 14 07:28:58 EDT 1998 | Wayne Bracy
Jon: Sorry, that's what I get for fishing all weekend long, did not read down the forum ........... Wayne
Electronics Forum | Mon Sep 14 07:02:55 EDT 1998 | Wayne Bracy
Jon: What stimulated this? It's okay to pick on Earl, but explain who is placing .008" pitch. Sounds like the olde hybrid guys? Always looking for cheap equipment to do hi-rel production. Wayne
Electronics Forum | Mon Sep 14 07:58:36 EDT 1998 | Earl Moon
| Jon: | What stimulated this? It's okay to pick on Earl, but explain who is placing .008" pitch. Sounds like the olde hybrid guys? | Always looking for cheap equipment to do hi-rel production. | Wayne Wayne, I resemble that remark. Jon, That's a
Electronics Forum | Sun Oct 28 08:32:47 EDT 2007 | davef
With a 7 thou stencil, we'd go 1 to 1. So for a more typical 6 thou stencil, we'd bump the aperture area by 1.15, maybe 1.2. We make no distinctions between 'innies' and 'outies'. Are you talking about castellations on land grid devices [ie, BCC�, L
Electronics Forum | Wed Nov 21 19:45:36 EST 2001 | Yngwie
Hi Guys, I need help. I�ve a trouble with non-wetting problem on the lead of 208 pin, 20 mils pitch QFP. We are on intrusive reflow. I never faced this problem before on this product after running them for about 2 years now. This occurred on one pa
Electronics Forum | Wed Aug 03 21:29:59 EDT 2005 | Ken
Yes, lead can promote fillet lift. In order to understand this defect you must begin looking at your lead frame mateials. some lead frames are more susceptable to this disorder. This is most likely a cte mismatch disorder. Lead contamination in
Electronics Forum | Mon Oct 18 22:15:11 EDT 2004 | KEN
I have two industry leading customers that have specific requirements for components to survive 30 seconds above 230C. In one case I have a custom ASIC that is heat sinked on the die (to the PCB). The sink pulls heat out of the lead frame very effi
Electronics Forum | Wed Feb 21 14:14:11 EST 2007 | rgduval
Hi, Bill, Lead-free solder and paste manufacturers will be a great resource for you during the transition; they've tested their products extensively, and their application groups have been able to help me through the biggest changes. There are a fe
