Electronics Forum | Wed Mar 06 11:02:07 EST 2002 | slthomas
I worked for a medical instrument manufacturer a few years ago and we had to calibrate all measurement devices. That included everything from our vapor phase oven's thermocouples to 6 inch steel rulers. I don't see any logical justification if you'
Electronics Forum | Sun Mar 24 23:11:36 EST 2002 | sy_koh
I am looking technology for BCC package. The preliminary datasheet from customer show that it had rectangular flat pad on the joint. The smallest pitch is 0.6mm having 96 I/Os. I am currently putting BGA, uBGA, CSP and CBGA onto PCBs usinf no-clean
Electronics Forum | Mon Apr 01 05:55:54 EST 2002 | nifhail
Anyone with selective wave experience ? I'm buying the Selective Wave machine and trying to workout the comparison matrix. Can someone tell me what criteria should I look at when listing down the matrix ?...things like, min clearance to the high prof
Electronics Forum | Mon Apr 15 19:01:53 EDT 2002 | Shawn
We have been getting solder balls on some of our SMT boards that are scattered across the board. We are using AIMS RMA291 in a cartridge. The profile we run matches what is called out on the tech data sheet for the solder with only the soak time mayb
Electronics Forum | Mon Apr 22 13:05:52 EDT 2002 | davef
Try: Somar Corporation, 11-2, Ginza 4-chome, Chuo-ku Tokyo 104-8109, JAPAN http://www.horiba.co.jp/ +81 3 35422151 +81 3 35422056 Not to imply there is anything wrong with Somar's material [having never used the material], just looking at an alterna
Electronics Forum | Tue May 07 07:29:24 EDT 2002 | Yannick
Hi, I reaaly mean AG (Like silver) we was thinking about going with immersion gold butis a bit more expensive. we use a no-clean paste but in a few year( maybe 1-2) we suppose to change to a lead free. You said that with Immersion gold we
Electronics Forum | Tue May 07 07:38:13 EDT 2002 | ianchan
Hi mate, checked with one of our egg-brains in the factory (freakin' workaholic still around at this time of night), he tells me that Ag-based PCB finishings share rather similar reflow temperatures for normal Sn/Pb applications. this means (if he i
Electronics Forum | Wed May 08 04:20:58 EDT 2002 | S.E.J.E
Hi there. I intend to do some evaluation between different pastes, stencils, stencil apertures and reflow profiles (to find practical differences, evaluate stencil suppliers and have some desing guides among other things). I'm considering to use ben
Electronics Forum | Tue Jun 04 19:15:15 EDT 2002 | rob_thomas
Por, Why do you clean no-clean flux residue?I didn't use the product you mentioned but I got some help from the folks at Cookson group last year when I did wirebonding after no-clean smt processing.check their website.Check your profile as well.unles
Electronics Forum | Wed May 29 17:17:49 EDT 2002 | wilcoxito
As far as aperture dimensions go, I found a technical note written by Micron that recommends using "square apertures with sides equal in length to the diameter of the PCB pad. The corners of the square should also be slightly rounded, and the apertu
