Electronics Forum: stencil (Page 164 of 540)

BGA APATURE

Electronics Forum | Wed Nov 05 13:05:54 EST 2003 | MRMAINT

HAS ANYONE EVER USED SQUARE APATURES ON A STENCIL FOR BGA'S IF SO WHAT IS THE REASONING BEHIND IT. THANKS

Stencil Printers

Electronics Forum | Tue Dec 02 23:46:42 EST 2003 | Grant Petty

Hi, I know this must have been asked a lot of times, however I have a "which is the best stencil printer" question. We are on a limited budget of around US$90,000 and we need to get an inline fully automated stencil printer. We have been looking a

Stencil Printers

Electronics Forum | Thu Feb 19 17:58:23 EST 2004 | browning

Grant, Congradulations on your choice, I think you'll be happy with it, they are a great printer.

Stencil Aperture Sizes

Electronics Forum | Thu Jan 22 17:01:11 EST 2004 | Guest

Yes, 1:1 is more or less standard for gerber data provided to the assembler.

Board Cleaning

Electronics Forum | Tue Feb 24 16:21:13 EST 2004 | esoderberg

I should of said stencil cleaning. Sorry

Stencil printer

Electronics Forum | Wed Mar 03 07:51:16 EST 2004 | jpa

Thanks. Would you avoid it if it hasn't been upgraded?

Stencil printer

Electronics Forum | Wed Mar 03 08:31:25 EST 2004 | pjc

Yes, considering the cost to upgrade if the Cognex 2000 goes down.

Stencil printer

Electronics Forum | Wed Mar 03 08:57:23 EST 2004 | jpa

Then I certainly will inquire, Thanks!

Freshman in SMT industry needing advice

Electronics Forum | Thu Mar 04 12:34:48 EST 2004 | cyber_wolf

I know that many smaller companies clean their stencils the same way you do. If you get good results cleaning your stencils this way then I would say stick with the alcohol/wipe method. Take your stencil and put it under a microscope.If the aperture

Type 4 solder paste

Electronics Forum | Mon Apr 12 15:52:12 EDT 2004 | wgaffubar

I am using Indium 92J type 4 solder paste due to a BGA site with .008" pads and stencil opening of .009" square and .005" stencil thickness. When I try the type 3 we get insuffecient print. The aspect ratio tells me that I should be using a type 4. T


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