Electronics Forum | Thu Jul 19 18:25:42 EDT 2012 | boriskilk
We have picked up a new customer who is insisting on Ionic cleanliness less than 6.45u grams/cm2 when measured in accordance with OPC-TM-650 Method 3.26.1 with measurements made immediately prior to solder mask application. This is the first request
Electronics Forum | Tue Oct 09 22:42:38 EDT 2012 | davef
You're correct. It hinges on who's talking about a "production printed board." * You think a "production printed board" is the board that you're trying to produce and ship. * Your fab thinks a "production printed board" is a 30-up panel. It would be
Electronics Forum | Fri Mar 15 18:44:34 EDT 2013 | anvil1021
We will try both the solder mask and the .001" Kapton and see where we end up with each. This is a fine pitch dual row QFN and we cannot afford too much paste on the .004" stencil we are using. We have experienced shorting in the past with .005" sten
Electronics Forum | Mon Apr 23 11:05:36 EDT 2018 | proceng1
Does anyone have an ESE LX3 printer installed and running at their facility? I'm curious if you've had any problems, or major break-downs. I'm wondering in your experience how it handles different color solder mask. Any issues you found with the squ
Electronics Forum | Thu Feb 07 12:04:11 EST 2019 | davef
Over the years, Bob has contributed many videos and pictures that have help identify and solve production issues. I recall a vid of a bug-up BGA being heated to liquious that showed the balls swelling in the heat to the level that they bridged. Bril
Electronics Forum | Fri May 29 14:34:37 EDT 2020 | huske
BEST Inc offers this type of product for custom shape cutouts. You can buy standard circles and squares from many places. soldertools.net/conformal-coating-tapeshapes-laser-cut-3m-type-401-engineering-cad-work/ solder.net/painters-tape-cus
Electronics Forum | Thu Oct 14 18:23:40 EDT 2021 | mikeybinec
OK, thanks for access a few decades ago when I was a kid, I printed soldermask and legend inks on circuit boards. Printing solder mask, (PC-401, SR1000, LPI) I would use SM-1000 stencil material on 86 or 110 mesh I've been trying to find sm-1000 bu
Electronics Forum | Fri Oct 09 14:35:58 EDT 1998 | Chrys
| Does anyone out there have hands on experience of selective soldering. Either masking or miniwave type. I am looking for pointers with regard to equipment selection and known process problems/ limitations | Charles, I've used both miniwave and s
Electronics Forum | Mon Jul 26 18:01:30 EDT 1999 | Earl Moon
| Presently protos of micro-bgas (80i/o) pitch .030/.031 | 12BGA per assembly | | The board is a (.062, 4 layers) FR-4 using Dry film | Pads .014inch | Vias within footprint .020inch | Vias to be filled by bottom side(solder side) only .030in dia. F
Electronics Forum | Fri May 08 08:12:32 EDT 1998 | Steve Gregory
| I am running a board that is .062" thick and has components that over hang the edge of the board by .090". I have bottom side smt components (chip caps and resistors only) and use the turbulent wave to help solder the components. The problem I am
