Electronics Forum | Wed Sep 20 19:34:13 EDT 2000 | Dave F
Congrats. You now control the source of almost 70% of the defects of your SMT operation. There is a neat series of presentations on printing, each year at SMI. One of the best of the SMI series was in 1997, because presenters used a common board
Electronics Forum | Mon Apr 30 18:17:16 EDT 2001 | ianlg
Hi Barry Unable to assist on specifics but I can tell you that some 74 100is machines were built. The majority residing in China Imported in by Wong King Kong Ltd ( Johnson lee Tel 00852 2357 8888 ) Most are at either Flextronics or Roslare. You mi
Electronics Forum | Mon Dec 06 17:50:39 EST 1999 | Kantesh Doss
Christopher: Thank you for sharing your experience about the DPAK. Yes, out part has a heat sink at the bottom. Our stencil opening was 7 mils (in both X and Y) smaller than the pad size excepting that the stencil opening consisted of a series of zeb
Electronics Forum | Sun Jan 24 06:44:31 EST 1999 | Kallol Chakraborty
| | Could anyone send me equations to calculate controlled impedance of traces on circuit boards. I am most interested in the buried traces in multi layer boards. | | | | Thanks, | | David - piengr@verinet.com | | | As one of the first MLB impedan
Electronics Forum | Wed May 22 13:51:20 EDT 2002 | Phil
2 suggestions - Get a good scope - at least a 4X, but more like a 6X, 10X is best. You have a choice on used equipment for a substantial savings. A Leica Stereo 4 zoom is it. You can look for BGA scopes that have a 90` angle for looking at the balls
Electronics Forum | Thu Oct 23 08:13:44 EDT 2003 | davef
The SEMA listing [ http://www.smema.org/smema5.pdf ] says: * D CUT SQUEEGEE: A single diamond edge squeegee which is shaped like an upside down house and made of polyurethane. * FOUR-SIDED DIAMOND EDGE SQUEEGEE: A polyurethane 3/8 x 3/8 four sided, f
Electronics Forum | Wed Apr 21 18:24:13 EDT 2004 | pjohnson@volterra.com
Simple process - we use similar Kester solder brands of "no clean" low residue solder wick to clean our pads, then brush with isopropyl, and apply Kesters brand of tacky flux under a Leica 6x microscope. We do this on 7x7mm and 9x9mm packages. This w
Electronics Forum | Thu Jul 03 09:32:32 EDT 2008 | realchunks
Well, when facts and data become "complaining' and "scare-tactics", it's pointless to carry on a conversation. You might as well twist tin whiskers so that it becomes a GOOD thing. "Just say YES and we'll move on!" http://www.funnyordie.com/vide
Electronics Forum | Fri Aug 28 12:05:12 EDT 2015 | davef
“The global automotive industry demands world class levels of product quality, productivity and competitiveness as well as continual improvement. To achieve this goal many vehicle manufacturers insist that suppliers are certified to the quality manag
Electronics Forum | Thu Oct 26 17:53:32 EDT 2000 | Dave F
John: I�m here. On "what do ya think about that one!..."??? Mutha, that sounds rat�s rump [as Dennis Miller says] ugly. On some boards, we paste a cuppla chips on the break-away panels and then torque the chips from the board after cure. We use the
