Electronics Forum: stencil (Page 74 of 540)

RoHS and stencils

Electronics Forum | Fri Mar 03 14:40:22 EST 2006 | amol_kane

i think a more important issue here would be the reduction ratio. as LF solders have a higher surface tension, they do not flow as well as their leaded counterparts. therefore the stencil design may have to be changed (hence a new stencil) if the red

Stencil cleaners.

Electronics Forum | Mon Jul 10 16:24:33 EDT 2006 | nitro

I am looking at two stencil cleaners, and need some input. Electrovert Aquajet 2000 and EMC 30 Reliant. I am told that these are both spray type cleaners. My only experience with stencil cleaners is a PMR Ultrasonic unit which works well for the no c

Imm Silver & Screen Printing

Electronics Forum | Tue Aug 01 12:38:13 EDT 2006 | razor9114

I would go with a 5 mil stencil as well, we experienced some similar issues with micro BGA's and the area ratio was suspect as well as the MESH size of the paste. We went to Type IV paste and verified our area ratio and everything ran beautifully. Pa

To use a mini stencil, or not to use a mini stencil.

Electronics Forum | Fri Mar 30 06:56:17 EDT 2007 | realchunks

Hi Chris, Mini stencils are a pain to line up and then holding it still while trying to print is almost impossible. We used to use tacky flux but found the Stencil Quik gizzmo from Best works the best. Give it a try. http://www.solder.net/stencil

WS619LF solder paste

Electronics Forum | Thu Feb 07 05:24:16 EST 2008 | muarty

I would advise that you clean the stencil thoroughly at least every 4 hours, also though it is worth cleaning the stencil top and bottom after any breaktimes. To avoid solder paste drying off in stencil apertures. Best piece of kit I've purchased was

Stencil Cutters

Electronics Forum | Wed Nov 19 17:29:05 EST 2008 | elias67

It is not as easy as just buying a Laser machine. There is much more involved in bringing this in house. With the price of stencils these days, you would have to be consuming a very large amount of stencils to justify such an investment. Steve is r

Stencil Cleaning

Electronics Forum | Tue Mar 30 13:26:21 EDT 2010 | swag

We currently use under-stencil wipe for in-process stencil cleaning. Our product goes in sensitive optical equip. Our customer is finding microscopic fibers we believe are coming from stencil wiping paper. Can anyone recommend a different process

Reflow Oven

Electronics Forum | Wed Jun 09 11:41:25 EDT 2010 | smtmax

Hi Danny, I would suggest a laser-cut stencils w/ anti static polymer film. For more information on the stencil you should consider engineering lab. They provide high quality stencil for a reasonable price. If you can find a laser-cut stencil for a

PASTE DRYING OUT ON STENCIL

Electronics Forum | Wed Feb 09 13:24:31 EST 2011 | waveroom

I have a customer who's solder paste is drying out on their stencils. Humidity 40-45, Temp 70degrees, no air blowing on stencil, no cleaning stencils with chemicals. Handling of paste is done correctly. I'm thinking maybe the paste froze during shipm

solder splatters

Electronics Forum | Tue Mar 22 11:57:07 EDT 2011 | jercole

Make sure the paper is advancing correctly on > your stencil wiper. I have seen this cause major > issues. If the paper hangs up, it will smear > paste across the bottom of the stencil every time > it wipes. We are manually cleaning the stenci


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