Electronics Forum | Thu Nov 20 12:10:20 EST 2003 | frank
Well, let me take a shot... +/-100um = 0.1mm 5 sigma = is the number of acceptable defects (or placements outside of that accuracy (or tolerance). I believe 5 sigma is 233 defects out of 1 million, but I could be wrong on that. So basically all pl
Electronics Forum | Wed Dec 27 12:22:05 EST 2000 | charlie
Where is the best place to get exact dimensions for waffel trays? The trays themselves give the support dimensions n each pocket, but as you know, having the exact pitch makes it quicker to program a tray,by eliminating the measuring and estimating o
Electronics Forum | Wed Dec 27 16:31:37 EST 2000 | Dason C
Charlie, please check Jedec Publication 95, you may found the information which you want. FYI, http://www.jedec.org/DOWNLOAD/pub95/ Rgds. Dason.
Electronics Forum | Tue Dec 22 23:13:46 EST 2020 | isd_jwendell
I have been using 3M (Scotch) 233+ (6mm or 3mm width)
Electronics Forum | Wed Dec 27 21:16:51 EST 2000 | Dave F
Expanding on Dason's suggestion ... 4 Waffle Tray Size 4a www.jedec.org/download/default.htm search for "registered microelectronic carrier". 4b JEDEC Publication 95, under the CO- and CS- standards. 4c Tray manufacturers [ie, Peak, Summit, Nepenthe
Electronics Forum | Tue Jul 27 10:11:26 EDT 1999 | John Thorup
| Does anyone know where I can find the supplier of an adhesive RTV5204. | Don't know for sure but General Electric silicone rubber adhesives are prefixed with "RTV" Try GE silicones at 518/233-3330 (might be an old area code) or distributor R.S. H
Electronics Forum | Thu Jun 17 15:47:51 EDT 2004 | davef
Tim: We haven't bought a stone in years, but we'd start with our wave solder equipment manufacturer. Then, we'd try: * Metallic Resources, Inc.; 2116 Enterprise Parkway; Twinsburg, OH 44087; (330) 425-3155 (fax) (330) 425-2180; Stanley Rothschild
Electronics Forum | Tue Jun 14 10:38:53 EDT 2005 | Stefan
500 rejected (?) per million placed components is a very good rate, considered that it would be better than 4 Sigma if you name it defects on the board. Or do I incorrectly convert ppm to dpm? * 3 Sigma 66,800 defects per one million opportuniti
Electronics Forum | Mon Apr 28 02:22:52 EDT 2014 | jkhiew
We found repeated pad lifted after different SMT Reflow temperature (eg: 243 deg C and 233 deg C) at an isolated slot. The PCB Supplier had claimed that such condition is acceptable as per IPC 600H Clause 3.3.2 (Cross Sections) - eg: Acceptable - C
Electronics Forum | Mon Mar 04 10:09:36 EST 2002 | davef
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