Electronics Forum | Thu Jul 27 12:54:53 EDT 2000 | John Thorup
Hi Jason I think Wolfgang has this one nailed. If it's the same four pins every time and nothing changes this, even rotating the board 90 degrees, then you're probably going to find something like a ground plane connected to them. I don't think sol
Electronics Forum | Sat Jul 29 00:44:30 EDT 2000 | Jason
Thanks for all the ideas. I tried solder "thieves" by placing some desoldering wick behind the briging pins and it worked! I have yet to try Chrys' idea but I will first thing Monday. This is a new board that has had this problem from day one. I
Electronics Forum | Fri Jul 28 14:34:13 EDT 2000 | Gary Simbulan
Belive it or not, these boards were run through a Centech batch mode Vapor Phase machine. Single stage top side IR preheat. Vapor temp 218 C. Solder paste is an SN62 RMA.The boards were FR4 8 layer w/ solder mask, fairly conventional as might be e
Electronics Forum | Tue Jul 25 20:36:58 EDT 2000 | Dave F
Sal: When western companies first started studying Japanese companies, they found the Japanese using a technique called "poka-yoke." It means mistake-proofing. In this, the designer specifies parts and assemblies so that they can be assembled one
Electronics Forum | Mon Jul 24 17:47:16 EDT 2000 | John Thorup
Hello Nick I'm not aware of any published 1:1 footprints. couple of options: Topline dummy show and tell display cards. $$ I believe. Since there aren't that many different pitches, get one of each and glue those puppies to a card. Could be new, dea
Electronics Forum | Mon Jul 24 18:19:08 EDT 2000 | Darby
Nick, Like John says, it will only be a short time and you will "just know". In the meantime you might want to try - 1. All the placement machine manufacturers have show pcbs for the exhibitions, many of these show pitch and package types on the silk
Electronics Forum | Thu Jul 20 11:51:14 EDT 2000 | Deon Nungaray
Walter, First of all, if I recall correctly you should not need a 6" leader for starting a reel on a Mydata. Mydata's have a reel leader extension attachment with a V hook at the end so you can avoid this need for a long leader. You should be able t
Electronics Forum | Wed Jul 19 17:58:45 EDT 2000 | Darby
Moving Heavy Machinery, We will be reconfiguring four smd lines after some building alterations are completed. What are the latest tricks/tools peolple are using for lining up their production lines. Lumps of 4" x 2" and trolley jacks work fine for t
Electronics Forum | Wed Jul 19 17:34:25 EDT 2000 | Deon Nungaray
Craig, I'd be really hesitant in pursuing this method for a TQFP. Remember, most SMD's are rated for a maximum rising slope of around 4C/Sec. Immersing a fragile TQFP in a hot wave of molten solder will probably exceed this ramp up rate. Besides thi
Electronics Forum | Tue Jul 18 11:50:26 EDT 2000 | Jeff Sanchez
Hey all, My brother is a tech at TI. He is running tests on bump dies. The question is if he heats up a die (actual waffer) with out disrupting the solder can he still use the solder. Will the solder lose its integrity? Keep in mind that these
