Electronics Forum | Tue Mar 22 06:08:45 EST 2005 | Grant
Hi, We used to manually profile by comparing logged temp numbers and matching the paste profile. But we got a KIC and it's software was so much better we got a good reduction in rework and we have almost no first run faults now. I would recommend on
Electronics Forum | Tue Mar 22 07:39:05 EST 2005 | davef
There is no standard. This is a relative test. If you wish to do tests of this kind, we suggest to pay attention to the following points: * Shear strength of soft solder depends on the deformation speed applied. The faster the material is deformed t
Electronics Forum | Wed Mar 30 16:46:03 EST 2005 | chunks
There is no spec because solder is designed to provide an electrical connection not a mechanical connection to hold the part on. If it where mechanical we�d be welding our parts on. Your pad width and length are derived from your component manufact
Electronics Forum | Tue Mar 22 20:33:24 EST 2005 | davef
Q1. What are you guys doing for filled/tented/plugged vias on the BGA site? A2. 2221A, 4.5.1 tells you the vias have to be tented on both sides. Q2. What type of issues can this cause if using no filled/tented/plugged vias on the BGA site? A2. BGA
Electronics Forum | Tue Mar 22 12:11:15 EST 2005 | jdengler
Bob, I don't have 300 stencils only about 83 so my way might not be practical for you. This is what I have done. 1. I have racks that hold 20 stencils, 10 top 10 bottom. 2. Number the racks and have them in order. 3. Made a number system for locati
Electronics Forum | Wed Mar 23 02:56:59 EST 2005 | Hannu
Hi all Can somebody share their experiences on the Asymtek DispenseJet systems? I am not interested in sales rep talk, I want to hear real-life facts. Mainly things like maintenance intensity (is that the expression?) and if there are any issues wit
Electronics Forum | Thu Mar 24 22:39:22 EST 2005 | pmd
My opertaors have lots of setup problems with vib feeders. They dont realize that the chip weight pushes parts down and when feeders run low it's the frequency that drives the parts. Mixing parts with diferant phisical deminsions and masses in the sa
Electronics Forum | Wed Mar 30 20:06:07 EST 2005 | Sue PH
Ken, I run a Triber and have a manual. This machine was bought used and came to this company before I did. It looks like the manual is a copy and someone wrote Treiber 700B-16F on the front page. I don't know if this is the same machine as yours o
Electronics Forum | Thu Mar 31 10:14:06 EST 2005 | davef
There's some nice low-VOC uV coatings out there. We don�t use uV cured coatings, but try: * http://www.emersoncuming.com * http://www.dymax.com * http://www.mgchemicals.com * http://www.loctite.com * http://www.humiseal.com Be aware that uV co
Electronics Forum | Fri Apr 01 10:27:58 EST 2005 | chunks
Wow, Daja Vu! Besides a 9 iron, there isn�t any official physical test you speak of. You can run a design of experiments to prove your joints are strong, but I wouldn�t suggest pushing, slapping or prying on a customers solder joints. Any such pok
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