Electronics Forum | Fri Nov 09 07:40:07 EST 2007 | jdumont
Thanks for all the great suggestions guys. We do not have topside heating but topside temps are where they should be before hitting the wave. No excessive copper in the area either. We are going to start with the most problematic board and use it as
Electronics Forum | Mon Nov 12 07:59:38 EST 2007 | ck_the_flip
N ot another thread on PCB support! O f all the topics, this one has been much repeated. T o each his own, i guess for brining up this H eck, this topic is almost as repeated as stencil cleaning. E ngineers SHOULD be hands on, I agree. No
Electronics Forum | Mon Nov 12 08:04:15 EST 2007 | samir
In my past life, I used a tooling plate by JNJ that is specifically made for MPM's. The theory is - it's an alphanumeric grid, like Battleship, where you figure out your setup once, and then document it. It worked with and fit nicely with the MPM H
Electronics Forum | Wed Nov 21 13:42:12 EST 2007 | etienne
To answer your question: During my experience with Topaz machines, we had to replace 4 Heads on different occassions with different operators involved. Also I encountered several Head crashes with Eclipse machines. To buy such replacements here in Ma
Electronics Forum | Mon Nov 19 21:42:51 EST 2007 | jwsmt
I'll e-mail pics to you. Answers to asumptions: * Flex in end-item use was measured at 410 microstrain * Supplier PPM last 12 mos less than 1 * Part goes through 2 reflow cycles; once on top and once on bottom * ICT microstrain was 1365; reduced to
Electronics Forum | Tue Nov 20 15:06:34 EST 2007 | solder_master
I looked at the Kiss104 and the SPA-400 at the SMTA show in Orlando. I spent an hour with the ACE rep, and walked away totally confused as to how the machine is programmed. I spent 10 minutes with the rep from APS Novastar, and using their Photoscan
Electronics Forum | Fri Nov 23 12:50:27 EST 2007 | bbarton
Do you have any input as to the vibrations seen on the end-use device? Types of device(s) that have solder joint failure? How many thermal cycles the PCB goes through before failure? There are several areas in production of the board that could be th
Electronics Forum | Fri Nov 23 16:09:01 EST 2007 | davef
We're not real clear about what you're trying to discuss, because most capacitors are packaged in epoxy with a solderable termination on each end. But lets throw a couple of ideas at the wall and see what sticks. If this epoxy is: * From the capaci
Electronics Forum | Wed Nov 28 01:07:36 EST 2007 | shy
is there any standard gap between the terminal and pad if we place the glue? SMT-4 mention as per what you understand which is using glue at SMT without solder paste and run at wave solder for the solder paste at the terminal. Glue supplier recomm
Electronics Forum | Tue Nov 27 10:26:22 EST 2007 | ck_the_flip
Alot of that depends on your designs as well. Poor designs with lots of DFM violations WILL require a full-time tech./engineer, whereas with good designs, a conscientious operator (who regularly cleans the nozzles) should be good enough. As Chunks
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