Electronics Forum | Tue Oct 27 12:31:24 EST 1998 | Sanjay Bhatikar
SMT-ers I notice that most suppliers provide data that is eye-catching but avoid providing data of significant technical relevance, such as Cp and Cpk. It would perhaps be a wise idea for standards to be formulated in this area. For eg., ma
Electronics Forum | Fri Aug 17 12:07:40 EDT 2001 | davef
We always get pissed-off a preform suppliers when they tell us that we need to do NRE to develop a preform. Is that BS er watt? Ya got this vanilla connector that everyone on the planet uses and we have to pay NRE. It's just a scam. Try Teka Inte
Electronics Forum | Tue Sep 25 14:25:30 EDT 2001 | davef
Points in response are: * Microstencils work fine with paste, although they are a little fussy to use. * Never have used microstencils for flux. * Like Hussman, we dab the uBGA into a puddle of tacky flux and then place it on the board. * On contro
Electronics Forum | Wed Sep 26 16:32:40 EDT 2001 | davef
Placing a component the correct side up: * May affect heat dissipation. [Umm, that sounds like stretch, but who knows what designers think about?] * Allows reading the markings on those components that have markings, however cryptic the notation of
Electronics Forum | Tue Nov 20 20:58:43 EST 2001 | davef
Very coo!!! [You have done an outstanding job of describing your situation.] I guess the via are connected to a BIG chunk of copper that affects your profile on that pad / ball. At the same time, run a profile each on a: * Void pad * Nonvoid pad
Electronics Forum | Fri Feb 22 00:20:41 EST 2002 | djarvis
0.005" for a distance of 0.120". I supply the cad file - they supply the blades - SIX PER SHIM - $300. Try it, you'll like it! Take yer set of overpriced, dooverlacky, hoity toity, rickerpoodley and a fandoogally, titanium, teflon, whacko the didd
Electronics Forum | Mon Jul 29 18:53:17 EDT 2002 | davef
For MCM, hybrid, thick film er whatever they call them nowa days: * Aimtronics [ http://www.aimtronics.com/micro_thickfilm.htm ] * ISSI [ http://www.internationalsensor.com/HYBRID_PAGE_HTML/HYBRID_PAGE.htm ] * Vetronix Research 1700 Harmon Rd Auburn
Electronics Forum | Thu Aug 08 17:51:51 EDT 2002 | davef
'The emailer on Cold Fusion came that way and we have been soooo busy trying to make sure the Geary's is gone before the date code comes-up that we just haven't had time for munitia like that.' Well, I'd like to revisit that decision, given: * Volum
Electronics Forum | Mon Aug 26 20:35:08 EDT 2002 | davef
There are no industry standards for eutectic solder-paste in conjunction with the life span of solder-paste. Whatever that is. Speaking of that ['whatever that is.'], what do you mean by �life span of solder-paste�? Is that: * Shelf life? * Workin
Electronics Forum | Wed Jan 22 16:17:27 EST 2003 | slthomas
Ya know, I got that thing because I was told, once upon a time, that besides some typical low density passive bottom sided stuff, we'd eventually be building products with SOJ's and QFP240's on both sides and short of hand dispensing big tall gobs of
