Electronics Forum: stencil (Page 151 of 540)

Bump printing with solder paste

Electronics Forum | Thu Aug 19 15:49:05 EDT 2004 | pjc

Hi Erhard, Go to http://www.globalstencil.com They are the stencil firm that worked with MPM for developing technology for printing with thick stencils that are milled out on the bottom to account for existing components on the top side of a PC boa

Stencil design for flex-rigid PWB

Electronics Forum | Fri Sep 17 09:31:33 EDT 2004 | C Lampron

Hi Chris, It sounds like you may have to go with your idea of a relief cut into the stencil. Are there any components that need to be printed in close proximity? Is this a high volume?I used to work at a flex house and we had a similar situation. We

Stencil Cleaner Chemistries

Electronics Forum | Mon Nov 22 15:40:38 EST 2004 | Bill Schreiber

Hello Brent, I recommend that you read an article by Richard Clouthier, "SMT Stencil Cleaning: A Decision That Could Impact Production." It originally was published by EP&P. We keep a copy of it on our web site: http://www.smartsonic.com/article1.

DEK/Tannlin Vectorguard stencils

Electronics Forum | Wed Dec 15 20:17:48 EST 2004 | cmiller

We have switched from IIT pro-plates to QTS stencils. lots of companies provide them. We still buy from IIT, they have been one of the best suppliers we have had. The single axes tightening just does not get it anymore with the super small parts we h

Reflowing BGA balls directly to a PCB surface

Electronics Forum | Fri Apr 01 11:04:35 EST 2005 | chunks

A company called BEST makes a thing called Stencil Quik. It's like a stencil that sticks onto your board, you squeegee paste, place component/board and reflow. The Stencil Quik remains on the board. It prevents shorts and in your case could provid

UP1500 Frame Sizes?

Electronics Forum | Mon May 02 11:00:34 EDT 2005 | jh0n!

Unfortunately, we don't have that option under Utilities. Must be UP-2000 specific. I've set everything up correctly, multiple times...All the right dimensions, etc, taught fids, and it still tries to load the board in the wrong position. As far a

Stencil fiducials

Electronics Forum | Wed Jun 22 10:12:31 EDT 2005 | slthomas

I don't know how your printer could match the board's alignment to the stencil if they aren't. If you don't have fids on both board and stencil that match you'd have to use pads, but then you've got apertures thrown in to the mix. If that's the sit

Manual Stencil Cleaning Solvent

Electronics Forum | Tue Oct 11 13:50:21 EDT 2005 | stepheniii

you take the stencil which is contaminated with basically a toxic substance, add a solvent (alcohol) then use compressed air to blast it all into the air you breathe. I used to use foam wipes that were pretty good. I've also seen thick clothe ones t

Manual Stencil Cleaning Solvent

Electronics Forum | Fri Oct 14 17:08:36 EDT 2005 | Mika

What? That is easily done. With a 127 micron stencil thickness and apertures made for a QFP 0.5mm pitch... Remember from school of how You squeeze a media under a certain presure (like air), from a bigger diameter towards a smaller nozzle, You will i

Fine Pitch Stencil Design

Electronics Forum | Wed Dec 14 07:27:34 EST 2005 | chunks

"find yourself a good stencil manufacturer its there job really just tell them what machine you have and they should do the rest." I have to dissagree with this last statement on so many levels. There's a reason why it's called engineering. Plus,


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