Electronics Forum: stencil (Page 211 of 541)

Re: BGA Repair Problems

Electronics Forum | Mon Aug 17 02:50:44 EDT 1998 | Bob Willis

Have an SRT w/preheat, 18 layer board all copper, 456 BGA needs to be removed and replaced. The manufacturer is Chip Express and during reflow it warps up or down. Causing either opens or shorts on the corners. I was using gel flux with multiple

Re: Aperture Reduction for QFP (fine pitch)

Electronics Forum | Wed Sep 22 22:23:55 EDT 1999 | SY

My stencil thickness is 6 mil and we got qfp's with fine pitch. how many percent should i reduce my stencil aperture using a 6 mil stencil for 0.5 mm pitch and 0.4 mm pitch ? thanks We use 6

Re: Electropolishing Laser-Cut Stencils

Electronics Forum | Tue Jul 14 10:23:42 EDT 1998 | justin medernach

Hi all, We are currently having problems with a laser-cut stencil that is electropolished and nickel plated with 9-mil openings. The paste does not release well from the apertures. We are having to wipe after every print. The board is fixtu

Re: Aperture Reduction for QFP (fine pitch)

Electronics Forum | Tue Sep 21 09:33:30 EDT 1999 | Scott Davies

My stencil thickness is 6 mil and we got qfp's with fine pitch. how many percent should i reduce my stencil aperture using a 6 mil stencil for 0.5 mm pitch and 0.4 mm pitch ? thanks We use 6 mil lasercut stencils w

Re: Cleaning of 'No-Clean' paste

Electronics Forum | Mon Sep 13 11:02:08 EDT 1999 | Bill Schreiber

Mike failed to list the company that introduced the first ultrasonic stencil cleaner in 1990. The company remains the leader in stencil cleaning worldwide: Smart Sonic Corporation Tel: 1(800)906-4407 Fax: 1(818) 909-6409 e-mail: smt@smatrsonic.com w

Forum Sales

Electronics Forum | Mon Jul 26 12:55:08 EDT 1999 | Rob Fischer

I'm interested in hearing how many forum fans are interested in blatant advertising in the forum pages. At least Mike listed everyone instead of tooting his own horn. Some vendors support sites like these by buying banners and such. How effective

Re: polyimide stencils

Electronics Forum | Wed Nov 18 18:10:16 EST 1998 | fraser

I keep hearing about polyimide stencils, but what are they like in terms of registration and aperture accuracy? Fraser- We use polyimide stencils with great success for our prototype boards.

Used equipment

Electronics Forum | Tue May 01 09:58:20 EDT 2007 | rgduval

Basem, I can't direct you to a dispensing machine, as I'm not familiar with them. But, I can tell you what we do. We specialize in short volume, prototype quantity runs. Since prototypes and short quantities are not conducive to volume operations

Best Jet Printer? MY600?

Electronics Forum | Mon Feb 01 09:17:45 EST 2016 | spoiltforchoice

You can buy an awful lot of stencils for $200K > but where/how are you going to store all of those > stencils? There is a certain $$$ value to all > the space it will take to store them. > > I have > been told by a Mycronic salesman that they a

Freshman in SMT industry needing advice

Electronics Forum | Wed Sep 22 14:45:01 EDT 2004 | Michelle Ogihara

As many people have participated in this email string, including competitors and customers of Sawa, I would like to respond to especially one rather detailed email expressing concerns with this stencil cleaning system. Also, this teaches me to keep


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