Electronics Forum | Fri Mar 16 23:02:44 EDT 2007 | mika
Well said. But Not to forget, get the business in act before. What is your customers expectations? What is your customers needs? What do you need to get around? Can you fulfill this? And the big question; do you have a market after making all the cal
Electronics Forum | Thu Apr 26 08:29:37 EDT 2007 | pavel_murtishev
Good afternoon, We develop reflow profile ones and control it daily or when recipe changes after that. Modern reflow ovens are usually very stable. This means that your zone temperature set points won�t deviate from initial ones. You can calculate d
Electronics Forum | Wed May 16 15:22:25 EDT 2007 | mainenetservices
Below is a call-in question: Has there been a Benchmark study done for Best-In-Class Cost Per Placement of components on PCBA? Also, is there an industry standard to calculate cost per placement of components on PCBA? Any help would be greatly app
Electronics Forum | Tue May 22 16:07:31 EDT 2007 | francitj
We are doing a field study to test the placement accuracy and calculate cpk of some machines in our plant. From previous readings, it is suggested that you buy glass board kits from Accuspec, Topline, etc. Is that the easiest/cheapest way to go abo
Electronics Forum | Fri Oct 12 11:07:03 EDT 2007 | stepheniii
To get you started you might want to look at http://en.wikipedia.org/wiki/RoHS I think it's as good a place as any to get started. It has the basics explained in a straightforward manner. At the bottom of the page are external links they probably
Electronics Forum | Thu Nov 08 21:46:09 EST 2007 | davef
In the marketing description of your paste, look for "percent metal by volume." This percent metal by volume figure gives you a good approximation of the amount of metal in each solder paste brick that you print on your board. In most solder paste fo
Electronics Forum | Sat Nov 10 23:46:36 EST 2007 | mika
BTW, The surrounded QFN fine pitch terminals should have the normal aperture reduction of 7 % in case of RoHS Senju solder paste. This works for our Telecom customer. The vias in the ground pad will be somewhat filled with solder and makes it diffi
Electronics Forum | Thu Dec 20 01:22:41 EST 2007 | gersla
As I told you, some carriers (trays) are limited to 75 degree maximum, and from time to time employees do not pay attention to this. This is one of the reasons. The second reason is that 90 degree still be problematic in a case of rebake more then 3
Electronics Forum | Tue Sep 16 08:02:15 EDT 2008 | cyber_wolf
OEE is something that is difficult to project, because there are many factors that effect it. Component replenishment, change-over times, programming issues etc. I am sure the Fuji applications folks would be happy to figure out how many modules you
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
