Electronics Forum: ups (Page 172 of 1179)

thread "SRT BGA rework"

Electronics Forum | Tue Oct 08 17:33:56 EDT 2002 | dragonslayr

user just posted today. Thre are 5 identical copies of the users question. maybe a little clean up is needed?

SPC for MPM UP1500 Stencil Printers

Electronics Forum | Thu Sep 26 20:25:06 EDT 2002 | davef

When we DOE a board, we use the following independent print variables: * Print pressure * Print speed * Separation speed * Aperture orientation * Squeegee hardness

baking boards, revisited

Electronics Forum | Wed Oct 02 20:59:23 EDT 2002 | davef

We�ve been stewing on this and it just dawned on us the part that�s missing. Blow-holing is caused by BOTH of the following: * Moisture absorption by the resin that holds the board together. [Steve is addressing this with his various baking schemes

via in pad

Electronics Forum | Sat Oct 12 06:43:49 EDT 2002 | davef

Alternatives to consider are: * Opening-up your stencil aperture put-down more paste to compensate for the amount that is being used to fill the via. * Relaying-out the board to plug and plate over the via. * Relaying-out the board to move the via fr

Matrix Trays

Electronics Forum | Wed Oct 16 11:20:04 EDT 2002 | slthomas

http://www.semicycle.com/semicycle.htm Funny thing, they never told us they paid for them, just that they'd provide boxes and pick them up. I wonder how much $$ they owe me??

Wow! Changes...

Electronics Forum | Thu Oct 17 22:29:41 EDT 2002 | davef

Hocum all the Lou Reed images next the various names of the registered-types that posted messages in a thread always give the same ol' boring pop-up box?

Board Profiling

Electronics Forum | Fri Oct 18 15:23:34 EDT 2002 | mmulgrew

I agree with Monkey. We are a CM and profiling is a way to CYA. If we allowed operators to make decisions on when to and when not to you could end up in a bad spot.

extra zeros very confusing....

Electronics Forum | Wed Oct 23 12:04:47 EDT 2002 | slthomas

Interesting...those all showed up as Dave would expect, and I'm surprised. Why don't Dave's get displayed right for me?

extra zeros very confusing....

Electronics Forum | Wed Oct 23 18:57:22 EDT 2002 | slthomas

It's ie 5.5, and my own attempts at the symbols look fine as I typed them as well as when I view them now. It's only Dave's that are coming up wrong. Pretty weird.

Solder and flux

Electronics Forum | Thu Oct 24 15:02:16 EDT 2002 | seand

Hello Yannick, Have you brought this concern up with your supplier? I would recommend speaking with your flux and paste provider to gain additional insight and recommendations for resolving the concern. Good luck, Sean D.


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