Electronics Forum | Wed Jun 20 11:28:45 EDT 2001 | Steve
Fluxes that have been properly heat activated are insulative (non-reactive) during operation in the field and during environmental testing. If you are also performing a cleaning operation, the possibility of growing dendrites is so remote that it can
Electronics Forum | Mon Jan 10 12:00:06 EST 2000 | Dave F
First, I agree with Wolfgang, in response to Wister. Second, Wolfgang: Sometimes, our blanket purchase order for paste schedules delivery of the paste in advance of production requirements. (What!!!???? In-bound material schedules don't match out-
Electronics Forum | Mon Sep 16 03:10:32 EDT 2002 | stefano_bolleri
Do you mean, rows of pins at the edge of the substrate, making it a SIP/DIP component? This is achieved by attaching leadframes with dedicated technology, and is a typical high-volume application. If you confirm this is what you are looking for, ther
Electronics Forum | Tue Sep 14 13:40:50 EDT 2004 | paul_boxboro
I feel your pain. Your company may already be using Kapton tape labels for their board serial numbers labels. Kapton is able to withstand repeated wash and heat cycles, and can be printed on a typical Zebra printer. The key to a successful and accura
Electronics Forum | Tue Sep 20 17:15:29 EDT 2005 | valuems
Hello I'll be the one to ask a dumb question--Why not fix the screen printer? If it is a MPM you can call me and I'll help if I can. And no I'm not trying to sell any thing. Better yet --why is the printer down? Wasn't thinking that you may be ou
Electronics Forum | Mon Mar 27 20:53:12 EST 2006 | davef
If you believe: * There is air in your paste AND * You are not whipping the air into the paste ... You should: * Return the paste to your supplier * Get it replaced * Begin qualifying a replacement supplier. One thing before you go racing off to ly
Electronics Forum | Thu Jun 01 16:30:05 EDT 2006 | slthomas
Just wondering if anyone knows this off the top of there head. I might be able to figure out the math based on surface tension (this is 63/37 so the data is out there) but I REALLY do not want to put that kind of effort into this. :/ Editing to clar
Electronics Forum | Tue Jun 06 15:45:18 EDT 2006 | slthomas
Yep. What I'm really looking for is the minimum radius of curvature for 63/37, which is a function of it's surface tension. It's physical properties issue, not an agency issue. I've seen some references that I have interpreted to mean that it's some
Electronics Forum | Thu Sep 20 07:26:42 EDT 2007 | davef
Jimmy So, it sounds like your stencil and board are made to dissimilar versions. Choices are: * Buy new stencil to match the pads on the board * Tweek position of stencil to better match-up with the pads on board, ignoring the fiducials. You may be a
Electronics Forum | Fri Sep 21 10:31:44 EDT 2007 | russ
this would be meaniung that somewhere in your documantation it should have spec called "repeatability" what this means is that when the vision aligns the stencil/board, the board will always be within "x" amount of the njominal xy "T" position, some
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