Electronics Forum | Fri May 07 15:58:36 EDT 2010 | smt_guy
I'm looking for an optical scope that can penetrate through a gap of 0.005" to 0.010". Is there anything available in the Electronics / Semiconductor Industry for this kind of application? I want to see what's inside that size of gap for solder short
Electronics Forum | Mon Aug 12 21:54:33 EDT 2019 | davef
I've never seen successful printing with a step as deep as you seem to be saying. The keep out would have to be jigundous!!!! SMTnet Technical Library: https://smtnet.com/library/files/upload/Step-Stencils-laserjob.pdf I'd guess * Maximum step
Electronics Forum | Mon Jun 18 10:02:26 EDT 2007 | dyoungquist
5mil should work fine. Some stencil manufacturers charge more if you go less than 5mil so stick with 5mil.
Electronics Forum | Tue Feb 21 21:17:41 EST 2006 | Cal Kolokoy
M, The paste height is what you establish it as. You're probably using a laser measurement system, and these depend on where your reference datum is. Some will measure from a silkscreen, a trace, or solder mask. These add height, not to mention H
Electronics Forum | Thu Jun 01 21:19:52 EDT 2006 | ec
Hi Russ, Thanks for your input. Currently, our stencil is at 5 mil thickness and the paste height from 5.5 to 6.5mil. I have increase the paste height to 7 to 7.5 mil and great improve....... I just need some data to present to my management and tel
Electronics Forum | Tue Feb 21 20:22:46 EST 2006 | mnguyen
Hi, I am having problem looking through IPC and finding according to ISO spec what should the paste height requirement vs stencil. EXAMPLE: The stencil is 5mils thick and according to the specs we have on paste height measurement the max height to be
Electronics Forum | Wed Feb 14 15:43:33 EST 2007 | CK the Flip
5/3 mil as in... 5 mils stepped down to 3 mils?
Electronics Forum | Mon Jun 18 02:15:20 EDT 2007 | pavel_murtishev
Good morning, 5mil stencil or less would be appropriate. We deal with 0402's daily and 5mil works. BR, Pavel
Electronics Forum | Wed Jul 13 19:47:06 EDT 2005 | Darby
This works for me with ENIG finish and a SAC305 NC paste Reduce all pads by -2mil on all sides ie 0.050" x 0.050" becomes 0.046" x 0.046" EXCEPT Anything smaller than 30mil; -1.5mil Anything smaller than 20mil; -1mil Anything smaller than 15mil;
Electronics Forum | Thu Sep 16 17:56:48 EDT 2010 | asksmt
Ok Thanks, i have reduced thermal pad size by 4.5 mils on top and bottom part of this footprint where the problem was occuring, so now the clearance between thermal pad and lead pads are 12 mils instead of 7.5 mils on two sides. (i kept the signal pa
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