Electronics Forum | Fri Oct 09 04:08:45 EDT 1998 | Thomas Blesinger
| | | | I am trying to find out, what possibilities I have, to print solder paste on a board, when the task is to have 120 Microns thickness for the biggest part of the board (85% of the real estate), and then have 250 Microns of thickness on the re
Electronics Forum | Tue Oct 12 22:22:34 EDT 1999 | se
| Hi, | We are in the process of evaluate our solder paste,incoming inspection over the solder paste, stencil requirments: | | 1- Is anybody using/requiring 1000 Kcps or more on viscosity to your solder paste provider ? Why ?? | 2- Is anybody using
Electronics Forum | Fri Feb 24 12:34:13 EST 2006 | Ticky Ticky Tembo No Sarimbo Hari Kari Bushkie Perry Pem Do Hai
Stepped stencils are usually the result of some dumb customer's requirement. 2 examples I can give: 1.) Customer demanded 50% wick-up the termination of a MELF component. No way you can get that from reflow. Played around with a drastic "step up
Electronics Forum | Thu Feb 23 23:24:14 EST 2006 | KEN
Depends what is adjacent to the step. 1206 chips could reside closer than say a 16 mil fine pitch. Larger apertures are more forgiving to height variations than small apertures.
Electronics Forum | Thu Feb 27 23:50:09 EST 2014 | ilatintj
I would like to speak with you. In many cases with our new COBRA 3.0....we have been able to help eliminate Steps 1-3 mils....would this be of support to you? Pls email me jv@interlatin.com.mx
Electronics Forum | Thu Mar 13 09:29:29 EDT 2014 | emeto
Why don't you try to make your step on the squeegee side? that way you shouldn't have any issues with cleaning.
Electronics Forum | Wed Aug 06 22:36:27 EDT 2014 | padawanlinuxero
Not an expert, so bear with me, but I think that depends on how much components are in the vicinity of the pads you want to step. Hope this pdf helps Cheers!
Electronics Forum | Sun Sep 08 22:38:23 EDT 2019 | sssamw
what's your final verified ok stencil thickness for the QFN and BGA?
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 | Wed May 22 10:27:23 EDT 2019 | emeto
Greg, this is a huge pitch. 0.16mm is safe for this size of part.
.gif)
