Electronics Forum | Wed Dec 18 10:10:07 EST 2002 | davef
No, sorry not on "Dave's Bookshelf". My basis is a study done at IBM. I reference it here: http://www.smtnet.com//forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=4941&#Message19050 Responding differently, you're correct. If you have a
Electronics Forum | Tue Dec 17 12:53:28 EST 2002 | russ
You looked one page to far in the IPC book! Fillet height of 75% is acceptable for all 3 classes. Per IPC 610 rev. C Section 6 table 6.2. A. Circumferential wetting on Primary side (top)between lead and barrel (not anualar ring) Class 1 Not spe
Electronics Forum | Sun Aug 15 05:45:15 EDT 1999 | Brian
Boca, Dave Sorry, but I cannot let this go. I'll go along with you that, at the time that the Montreal Protocol was initially signed (September 1987), there was no scientific proof that CFCs etc. were causing ozone depletion. There was, however, ve
Electronics Forum | Mon Apr 04 22:40:07 EDT 2005 | davef
We'd contact suppliers of LPISM. Top LPISM available in the United States are: * Coates ImageCure XV501T & XV501TSM * Coates ImageFlex (Flexible Solder Mask) SV 601T * Enthone DSR 3241 and DSR 3241 GM * Rogers RFlex 8080 LP1 & RFlex 8080 LP3 (Flexib
Electronics Forum | Wed Apr 06 07:28:54 EDT 2005 | liv2xplr
Besides the solder mask suppliers, I would contact some makers of exposure and alignment equipment. Try OLEC (www.olec.com) - they make different types of expsoure equipment. Another good source is a company called All-4-PCB (they rep a number of P
Electronics Forum | Mon Apr 18 14:58:36 EDT 2005 | halal
I have checked the links that you and Will gave to me. I have new info about my task: The task is to summarize the mask aligning methods. The first method: The factory already has an UV machine for the exposure, so they search some positions with a
Electronics Forum | Thu Apr 07 16:31:36 EDT 2005 | halal
Thanks for your answers! I will see them, and I'll write soon what I found helpful.
Electronics Forum | Mon Apr 04 18:19:58 EDT 2005 | halal
Hi! I'm new to here, so let me introduce myself. My name is Szathmari Gabor, and I'm an electrical engineer student in Hungary. There is a task in the university that I have to do, so I ask your help, dear smtnet forumers :) The task is: a factory e
Electronics Forum | Tue Dec 30 08:55:29 EST 2008 | umamaheswaruk
Hi all, I have couple of questions/doubts on solder mask, please clarify. Why green color solder mask is popular when compared to other solder mask (RED, PURPLE, BLUE etc.). Are there any performance issues with other solder mask if I use them.
Electronics Forum | Tue Dec 11 22:31:40 EST 2001 | davef
I'd be surprised if solder mask color is causing your delamination. We use various solder mask colors on FR4 boards and notice no difference. * ~99% of our boards are a medium green * ~1% of our boards are dark green * One of our boards is caramel b
