Electronics Forum | Sat Sep 26 14:07:09 EDT 2020 | davef
Print no paste on the tin-plated, [test???] pad. Experiment by putting Kapton tape over the stencil aperture for the tin platted pad. Re-assess your reflow profile, since the liquidus of the two plating materials will be different. Evaluate your pa
Electronics Forum | Wed Mar 16 19:59:51 EDT 2022 | a1customer
I do have this machine and I am trying to assess its value https://a1customer.com/products/jot-automation-j501-57-2-laser-depaneling-machine-smt-depanelizers-router
Electronics Forum | Tue Aug 15 17:17:26 EDT 2023 | emeto
This one picture would help us so much to assess. Step stencil to 6mil for the connector area.If this doe not resolve it, start thinking about part contamination, insufficient heat in reflow profile and a few other
Electronics Forum | Mon Jul 20 22:40:22 EDT 1998 | Dave F
| | Bare board solderability plays a significant role of forming good solder joint. Currently, I can not find any information about bare board solderability testing procedure or methods. I think the procedure of testing should have some differentiat
Electronics Forum | Wed Aug 03 15:35:27 EDT 2005 | mgc
The machine you are buying is probably going to > cost less than the service visit. Then with all > the problems found......hmmmmm....could get real > ugly.......shoulda just bought a new > machine.....hahahhaa " An assessment could suggest tha
Electronics Forum | Wed Aug 20 20:10:30 EDT 2008 | davef
Naw, accounting is boring. Standoff could be an issue. Coupla things: * Above 30 thou, just about any cleaning process, more sophisticated than a garden hose, will produce acceptable results * Below 10 thou, can be cleaned with best efforts, but not
Electronics Forum | Fri Feb 17 11:48:25 EST 2012 | davef
Here's a link to an earlier thread on SMTnet that may add something to the conversation http://www.smtnet.com/Forums/Index.cfm?CFApp=1&Message_ID=20871 Allowing fabricators to X-Out boards is a bad idea. * X-Outs are randomly placed * Machines can
Electronics Forum | Tue Sep 26 20:12:06 EDT 2000 | Dave F
I assume your "mounting manufacturer" (whatever that is) would reduce your cost. That would be cool, eh? There are some electrical, moisture absorbtion, flammability classification, and operating temperature considerations that your mounting manuf
Electronics Forum | Mon Jan 31 21:11:09 EST 2000 | Dave F
Dave: Find: "Comprehensive Surface Mount Reliability Model Covering Several Generations of Packaging and Assembly Technology", by J. Clech et.al. IEEE Trans on Comp. Hyb. and Manuf. Tech. Vol. 16, No. 8 Dec. 1993, p.949. It listed cycle to failure
Electronics Forum | Tue Nov 24 11:12:14 EST 1998 | Scott B
We are in the process of assessing some medium volume, stand alone SMT Placement systems. Does anyone have any experience with :- 1) Europlacer (Specifically the Progress 6 or EP600) 2) Intelliplace (DHM-120 or SHM-120) I have searched the forum bu
