Electronics Forum | Tue May 25 12:59:37 EDT 2004 | gregp
Mils to MM is actaully English to metric. 1 mil is equal to 1 thousandth of an inch (0.001")or 0.0254mm so... 12mil pitch qfp is 0.012" or 0.3mm 15mil pitch qfp is 0.015" or 0.4mm 20mil pitch qfp is 0.020" or 0.5mm (Numbers are rounded)
Electronics Forum | Tue Aug 10 06:58:48 EDT 2004 | dka123
dear all, kindly guide me for the use of space electronics hardware assembky of PQFPs and Cqfps, how to form the flat pack leads, bend for 240 pins of 20 mil pitch and what are the Mil standards for them.how to cut the lead guards.can we use FP5 elit
Electronics Forum | Fri Jan 14 11:16:45 EST 2005 | Dan Gosselin
I have heard of people using a round pad or Home plate design to decrease the incidence of tombstoning on 0402's Anyone have any practical experience on this or is everyone just using the IPC 782 recommended land pattern (28mil x 33mil rectangle pad
Electronics Forum | Thu May 05 20:08:59 EDT 2005 | Gene
We have My12 machines. The precision is 25mic. There is no problem with the accuracy. I assembled components 0201, QFN 20mils pitch /12 mils aperture, 0402 flip chips. Even if you have troubles with the video codes definition, mechanical centering co
Electronics Forum | Wed Aug 10 10:40:16 EDT 2005 | Larry
Hi All, We are looking for a multifunctional P&P capable of 20mil pitch and 0402 at a few kpph, preferably fully automatic. We need to stay in the $10K - $15K range. Are we kidding ourselves? And if so, what can we get in this price range? Thank
Electronics Forum | Fri Feb 17 14:32:53 EST 2006 | gipos
Hi all, The question for experienced operators: DEK 260 or DEK 265, which one is more suitable for high mix low volume to mate Juki 700 series line ? Is there any specific known issues regarding service, operation, repeatability... ? We have target
Electronics Forum | Thu Jan 25 13:49:57 EST 2007 | John S.
James, We have 3 750's that are 5-8 yrs old. Never any major issues. Juki's service and support are the best. We bought a 2060 1 year ago and have been pleased with it. We placed a 20 mil pitch QFP with a spec of +/- 0.003" to test the machine.
Electronics Forum | Fri Feb 09 17:09:29 EST 2007 | flipit
I think it depends on the shield and how it is configured. If your shield has some openings and your placement process is good, you can try it and see how it goes. I place small shields on small PCBs (1" X 2") and have no problems. There are 20 mi
Electronics Forum | Tue Mar 27 08:49:57 EDT 2007 | slthomas
If by 15 mil accuracy you're looking to place 15 or 16 mil pitch, yeah, you're asking a lot of a IVc. Ours do OK for 20 mil pitch but I wouldn't want my living to depend on placing high volume ultra fine pitch with it. They're not designed for that.
Electronics Forum | Tue May 22 12:27:04 EDT 2007 | cyber_wolf
I would consider calling Kester and telling them they need to send their people out. I could not really see mesh size being an issue on anything 20mil and above. There are several other issues that can cause aperture clogging as well...: Incorrect
