Electronics Forum | Fri Sep 11 14:15:24 EDT 1998 | tim scully
Thanks to all Earl, Mathew and David for the SMT info. I have one more question. Does anybody have a chart listing the standard, industrial spacings? Perhaps listing in each unit, say XX mils = XX Pitch. Or XX mils = XXmm or something of that nat
Electronics Forum | Tue May 26 18:17:22 EDT 1998 | Jerry
Our experience has been that mechanical crack occur vertically through the chip. In other words perpendicular to the board surface. You can sometimes tell through close inspection that the crack may have propogated from a point that the nozzle may
Electronics Forum | Thu Apr 30 11:59:37 EDT 1998 | Earl Moon
| Hello - | I am interested in obtaining information on the possibility of integrating a Vision Inspection System with an SMT line. I am aware of systems which may be used to gather placement data and such, but are there any systems which are able to
Electronics Forum | Wed Feb 25 03:01:13 EST 1998 | MARK EDVINSSON
| We are facing some placement problems with | our QUAD 4-C. | Program was running fine last week, Next week | program will be off (placement, pickup,vision files | etc, | Any help, any idea,??? | Thanks To be honest with you those machine they never
Electronics Forum | Mon Aug 27 19:24:00 EDT 2001 | sharafali
It has been mentioned that DPMO offers large advantages over First Pass yield calculations for measuring process performance!!regarding the same I have a few queries: What are the benchmarks for using DPMO as measures of process performance? How is
Electronics Forum | Wed Dec 05 20:51:36 EST 2001 | davef
Mydata [http://www.mydata.se/] makes excellent placement machines with some unique features. They are: * Tailored high mix, high part count, fast turn production. * Not aimed a low mix, chip pukin� production. * For BIG butt boards. Aegis works fin
Electronics Forum | Fri Feb 22 11:49:42 EST 2002 | stimpman
Hi, Have you checked your placements pre-reflow? The most typical cause of a billboard unlike tombstoning is a pick and place issue. Billboarding will usually happen with ( profile/bad pad layout and the most common just poor center placement. I'v
Electronics Forum | Fri Mar 08 09:27:43 EST 2002 | Amir
hello guys and gals: we know that BGA placement or rework are such a pain in *** oh well! but i was wonder if you can help me to figure: how many BGA do you place on board annualy? (just a bulk park idea) do you rework BGA in house? do you think
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 | Fri May 03 01:25:33 EDT 2002 | gerits
Dear Sir, I do not want to mix in this "subjective" discussion but as an employee of Assembl�on (buider of FCM II, FCM multiflex 50, 75, 100) I can provide you with MTTR, MTBF, placement data (0201), software, and other (also customer) data on our e
