Electronics Forum | Fri Jan 10 15:02:03 EST 2003 | John
Hi. I am familiar with the Transition blades. Normally, when there is metal to metal contact, as in the squeegee-stencil situation, there will be scratches, or a "brush pattern". Sometimes it takes the pattern of the high profile surface elements u
Electronics Forum | Fri Feb 22 13:54:40 EST 2002 | seand
Hello Armin, If you are putting a matrix together to determine the best equipment set to use then a good path would be to start with your product and production expectations. Is this to be utilized strictly for typical SMT products? Are there any
Electronics Forum | Mon Feb 25 21:09:48 EST 2002 | davef
You are correct about a TCE [CTE] mismatch issues in ceramic packages. The coefficient of thermal expansion [ppm/�C] of major ceramic package elements are: * Silicon - 3 * Standard 92% alumina ceramic � 6.5 * FR4 board � 18-20 Several points are: *
Electronics Forum | Fri Mar 01 08:35:27 EST 2002 | caldon
I am on board with Dave F.(like I usually am). I can not imagine what IPC specs the auditor is speaking about. The Stencil Design criteria, 610, and 001 do not fit the type of solder deposition you speak of (nor I think they should). The machine para
Electronics Forum | Thu Mar 14 19:08:56 EST 2002 | stevezeva
Hi ya'll! I know this is going to be an extreme longshot, but I'm in desperate need of a Assemblion Emerald 54mm front light camera mirror (part number 5322-380-10285). Ours got cracked somehow (still haven't found out how, probably never will...
Electronics Forum | Tue Mar 26 23:26:35 EST 2002 | ianchan
Hi Guys, (Note: We are not talking about bill-board RES/CAP, we are talking about Z-axis slant/tilted RES/CAP with respect to the PCB pad Z-axis plane). 1) We ref through the IPC-A-610C specification "bible", and can not find a "chapter/verse" tha
Electronics Forum | Wed Mar 27 01:06:12 EST 2002 | ianchan
Hi Guys, We are using two types of support Jigs for our PCB boards, during the paste printing, chip shooter, and IC mounting. The two types of support Jigs are : 1) "self-fabricated" aluminium support Blocks 2) "off shelf purchased" support Pins T
Electronics Forum | Wed Mar 27 21:20:30 EST 2002 | davef
There is two major BGA coating camps. * Camp #1: "We require the coating to be under low stand-off devices but with no filleting. So we apply a thinned dip coat first, and then top-off with a proper spray coat" * Camp #2: "We want no coating under th
Electronics Forum | Fri Mar 29 09:08:03 EST 2002 | caldon
Barcode!! The Siemens machines can have bar code Options added.On the Siemens Machines the bar code S/W is a little archaic. In theory You would have a bar code on a reel of part and a barcode on the feeder location (They are the black codes on the s
Electronics Forum | Mon Apr 01 17:50:31 EST 2002 | stefwitt
the good and bad days are normal results of statistics. You enter some variables like number of feeders, length of part numbers, day of the week, sexual satisfaction of the operator a.s.f. , you get some statistical distribution. It tells us that on
