Electronics Forum: stencil (Page 323 of 540)

Re: uBGA's

Electronics Forum | Fri May 14 17:06:29 EDT 1999 | Ryan Jennens

Hi Guys, I am going to be graced with the good luck of processing microBGA's in the near future. A bit of a step forward from printing 20-mil pitch and wave soldering 0805's, wouldn't you say? So, any of you folks who have alre

Re: Screen tension (measuring)

Electronics Forum | Mon Mar 15 23:00:40 EST 1999 | Dave F

In the early days, we used screens made of stainless steel or polyester. Sometimes - after A period - the tension was not good, because A wire was broken. Later on we started to us metal stencils, glued in A polyester screen. even than we had som

Re: Screen tension (measuring)

Electronics Forum | Tue Mar 16 08:38:59 EST 1999 | George Verboven (Process Engineer)

In the early days, we used screens made of stainless steel or polyester. Sometimes - after A period - the tension was not good, because A wire was broken. Later on we started to us metal stencils, glued in A polyester screen. even than we had

uBGA (.5mm pitch) printing woes

Electronics Forum | Tue Sep 19 09:41:30 EDT 2017 | sumote

Steve, The 4 things I would do, and in this order: 1. Clean your stencil with stencil cleaner wipes after it comes out of the stencil cleaner. I like MicroCare ProClean (MCC-PROWR). I will even saturate the wipe with a bit of isopropal just till

solder paste

Electronics Forum | Wed Jul 27 09:58:05 EDT 2011 | davef

Pressure printing systems Conventional stencil printing techniques have fundamental limitations as regards paste handling: The volume of paste available for printing is limited, so frequent replenishment is necessary Paste is difficult to c

Re: Stencil Printing

Electronics Forum | Thu Jul 20 14:52:05 EDT 2000 | Bob Willis

If you are talking about Pin In Hole Reflow that is not true, I hope it was not my friends at Speedline that told you that. Stencil printing of paste for through hole reflow can be done. If you get all the parameters right it can give you joints lik

Re: BGA's - Re-ball -- How thick?

Electronics Forum | Tue May 18 16:24:25 EDT 1999 | Scott McKee

What is the best way to re-ball a BGA? Who has the best system for doing it? I'm using our SRT rework stuff to reball in house - when necessary. Of course, we only do this for protos and test boards. We use a standard micro-st

Re: Solder Paste Dispenser

Electronics Forum | Fri Feb 19 16:45:55 EST 1999 | Steve Gregory

Hello Ryan! There's a company called Camalot that sells dispensers that in my opinion, make one of the better dispensers on the market. They use what's called a rotary-positive displacement pump when dispensing... much more precise and accurate

Screen Printer

Electronics Forum | Tue Aug 02 15:05:38 EDT 2011 | davef

A couple of points: * Just a nit, 'screens' fell in disuse 10-15 years ago. Old habits die slowly don't they? * Yes, DEK and MPM each hold about 50% of the solder paste printer market and about 4 or 5 others hold the rest. SOLDER PASTE PRINTER EQUI

Re: APerture size for microBGA

Electronics Forum | Thu Jun 29 09:29:46 EDT 2000 | JAX

sree, You might want to check the archives. If not, I found this just a few questions below yours!! [Back to thread listing at top] Posted by Igmar on June 22, 2000 at 10:27:26 AM EST Can someone please help with the aperture size on a Micro BGA st


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