Electronics Forum | Thu Jul 15 12:35:19 EDT 1999 | Earl Moon
| I use a Transition Automation Semi- Automatic stencil printer with laser cut frameless stencils. My solder paste is an SN63/PB37 RMA 291. I do not operate with in a controlled humidity enviroment. The room temp generally runs around 70 deg's but hu
Electronics Forum | Tue Mar 23 09:30:35 EST 1999 | Dan Hughes
Nancy, The mounting hole locations in most standard frames are the universal in both the screen and stencil industry, more over some of the newer machines clamp the frame in place. Most printers are very adjustable this way. If you were using a "qu
Electronics Forum | Tue Nov 30 07:53:16 EST 2010 | edmaya33
could be a printer or stencil issue. try to check your printing repeatability. Suggest to use SPI for a checking paste volume/height/area.A regular stencil cleaning may reduced your headache.
Electronics Forum | Tue Aug 14 10:51:18 EDT 2007 | erhard
standard procedure for this would be to solder SMDs on the bottom side and the LEDs all at once on the wave - if the layout is ok for the wave. You would have to glue the SMD components, for this you would have to use a glue dispenser or a special hi
Electronics Forum | Mon Oct 12 14:30:58 EDT 2015 | duchoang
Hello Eniac, 1/- Insufficient solder paste, check your print (Printer/Stencil). 2/- If you've got good paste deposit, that could be contaminated pads causing poor solderability. Good luck.
Electronics Forum | Thu May 04 11:39:10 EDT 2023 | dontfeedphils
We typically wipe the boards with a lint free wipe soaked in the same under stencil cleaning solution we use in our printer, then run it through our spray-in-air stencil wash.
Electronics Forum | Wed Apr 27 02:22:08 EDT 2005 | grantp
Hi, There are a number of things you can try. You are already using 1:1 hole to pad ratio, and that's good as you need the size. I would try an electroform stencil as that will have a smooth side of the aperture and help paste release. Don't use c
Electronics Forum | Fri Mar 03 10:20:12 EST 2000 | se
Steve, I'd stop worrying about the in-line feature of the printer, I've never really seen an in-line system that wasn't capable of batch operation and there will be very little, if any, cost saving associated with going batch load only. An in-line m
Electronics Forum | Fri Mar 03 10:20:12 EST 2000 | se
Steve, I'd stop worrying about the in-line feature of the printer, I've never really seen an in-line system that wasn't capable of batch operation and there will be very little, if any, cost saving associated with going batch load only. An in-line m
Electronics Forum | Wed May 30 21:16:05 EDT 2001 | davef
MPM AP-27 preferred over MPM AP-20 The issue is release of paste from the stencil. A vertical lift printer kinda snaps the stencil away from the board to complete the print cycle. The inertia and the rheometric properties of the paste make it rele
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