Electronics Forum | Wed May 27 12:32:15 EDT 1998 | Earl Moon
| | | | | We understand that testing for ionic contamination and surface insulation resistance measure different properties. We assemble printed circuit boards for other companies. We will not get combs on 90% of the boards that we assemble. | | |
Electronics Forum | Tue Sep 25 14:08:59 EDT 2001 | davef
Oooo, the solder on the pad and PGA ball is flowing during reflow down the via to the secondary side? Why didn�t you say so?? ;-) Why would you expect that gravity and capillary action wouldn�t force solder to flow down the solder plated via to the
Electronics Forum | Fri Jan 11 17:14:13 EST 2002 | davef
We have one product with electroless nickel, immersion silver solderability protection. We do not purport to be experts, but like many things, have seemingly boundless opinions. Side note: There are a least three different [maybe five] imm silver
Electronics Forum | Wed Feb 20 17:53:02 EST 2002 | djarvis
I certainly fit both citeria - 6'4" with a face like a bashed crab. I think I'm the one on the far right in white in the top picture at http://www.delicate.com/audio.htm which I believe is us at Mudd Island, Memphis in 1983. Alisa and Steve - now I
Electronics Forum | Thu May 09 17:13:10 EDT 2002 | davef
We are converting all our ENIG to imm silver. CHARACTERISTICS * Nominal thickness of the deposit will be 0.1 to 0.3 microns. * Deposit is flat and uniform * It will withstand multiple heat cycles in assembly, which can be problematic with tradition
Electronics Forum | Tue Jul 23 23:22:25 EDT 2002 | kenbliss
Quite an assortment of opinions and problems, I appreciate everyones input. Based on all that I created a process below that seems to me should work well to reduce these problems. There seems to be plenty of blame to go around for everyone in the f
Electronics Forum | Mon Oct 21 22:15:36 EDT 2002 | davef
First, SIR data is heavily dependant on the test pattern selected. Be very careful when comparing the results of resistance readings taken from different geometric patterns. Second, if yer talkin': * Bare boards, yupper. * Finished assemblies impor
Electronics Forum | Fri Mar 10 00:17:47 EST 2006 | Samir
Patrick, My sardonic wit comes from 11 years of being an embattled process guy who�s basically �seen it all� in electronics manufacturing. I�ve been witness to the �Seagull Managers�, uneducated managers lacking credentials, managers with MBAs but
Electronics Forum | Thu Nov 30 11:20:55 EST 2006 | CK the Flip
I'm no guru, but I am among the best that my home state's gotta offer... :-) Anywho.. a Production Manager's definition of cycle time is the time Production Planning schedules the stockroom to start picking materials for the work order, to the time
Electronics Forum | Mon May 07 11:09:49 EDT 2007 | davef
4 Fluxer Operation 4.1 Set-Up and Check-Out the Fluxer 4.1.1 Spray Fluxer Set-Up and Check-Out 4.1.1.1 Pass a sample unsoldered board through the machine. 4.1.1.2 Remove the board just after passing through the fluxer and the air knife. 4.1.1.3
