Electronics Forum | Tue May 20 16:27:34 EDT 2008 | vms
we buy a mpm and start to clean it, and find so much paste in it my help says did they put any paste on the boards or just throw it inside the machine. Some operators waste so much paste and the engineers ask how much did we use, they should be aski
Electronics Forum | Tue May 20 17:30:38 EDT 2008 | slthomas
They knew we had waste and accepted that as a part of doing business, and allowed the total usage to float while attributing all of the variance to waste. They HAD to have accurate per board values for the BOM, though. I'm just thankful they didn
Electronics Forum | Tue Jul 29 08:29:21 EDT 2008 | davef
Beyond the materials cost, one approach to estimating the cost of assembling a board is: 1 Direct cost * Determine the processes required to assemble the board * Separate parts on BOM according to process * Multiply number of parts in each process by
Electronics Forum | Mon Aug 11 04:08:52 EDT 2008 | janet200701
we want to estimate the price of assemblyng a > board that contain both SMD and THT component . > and also we have the BOM file of this board . > please help me There is 3part on the cost: 1. PCB cost 2.Assembly cost 3.components cost. If you w
Electronics Forum | Thu Oct 23 21:15:15 EDT 2008 | ikonify
Has anyone been using the following documents for DPMO and any feedback on them? IPC-7912 - Calculation of DPMO & Manufacturing Indices for Printed Board Assemblies IPC-9261 (In-Process DPMO Estimated Yield for PWA) Also is there any databases rea
Electronics Forum | Thu Sep 18 12:52:08 EDT 2014 | steveO
Does anyone know a rough price estimate on a new nitrogen reflow oven that can achieve very low oxygen levels - around 10PPM. Compared to a similar standard nitrogen oven that would for example go down to 500 PPM, what is a rough price premium for a
Electronics Forum | Fri Jul 06 08:10:50 EDT 2018 | davef
ACCELERATION FACTORS AND THERMAL CYCLING TEST EFFICIENCY FOR LEAD-FREE SN-AG-CU ASSEMBLIES [http://www.jpclech.com/CLECH_SMTAI2005_PAPER.pdf] Jean-Paul Clech EPSI Inc. Montclair, New-Jersey, USA jpclech@aol.com Paper (copyright EPSI Inc. © 2005) was
Electronics Forum | Tue Mar 31 09:22:48 EDT 2015 | rgduval
I've always hated using machine specs....they're always best case scenarios, and nearly never capture actual through-put rates. Personally, I don't like using first-piece rates, either...unless you're looking for worst case scenarios. Usually, the
Electronics Forum | Wed Apr 05 22:31:51 EDT 2000 | Dave F
Robert: Out of curiosity, by "BT" do you mean: � Bismaleimide triazine, the stuff used to increase the tg of resins used in some BGA interposers. � British Telecommunications plc, the guys with bad teeth. � BrookTree, the RAMDAC supplier, that�s par
Electronics Forum | Tue Oct 03 15:27:37 EDT 2000 | Wolfgang Busko
What�s wrong with your printing process and what improvement do you expect from dispensing ? I can imagine that it�s more convinient just to have this process inline, no worrying about stencils, cleaning, changing printer setting, just replacing a ca
