Electronics Forum | Thu Nov 07 10:59:11 EST 2002 | pjc
IPC-7525 "Stencil Design Guidelines" is a good reference document to have. Here are notes from a Tessera, (a major mBGA mfg.), study- "Application Note Solder Stencil Requirement for mBGA" The stencil aperture is to be square, equal in size to the l
Electronics Forum | Thu Nov 07 09:23:05 EST 2002 | russ
What would the considerations be in utilizing a type 4 paste as opposed to type 3? We have an assembly that has a large amount of uBGAs (12 mil diam pad)along with 50 mil pitch BGAs assorted fine pitch etc... We are experiencing difficulty in paste
Electronics Forum | Fri Nov 08 17:20:52 EST 2002 | davef
You need to get as much paste on the board as you can get. A BIG opening gives: * Better release. * More paste. You may be able to cheat further by rotating the square so that it is on the diagonal.
Electronics Forum | Fri Nov 08 14:48:58 EST 2002 | davef
Yours is (12 thou x12 thou)/(2x(12 thou +12 thou)x5 thou) = 0.60 * Aspect=W/T for electroformed stencils SB GT 1.1 => Yours is 12 thou/5 thou = 2.40 So, we kind of think of what you�re trying do as maybe printing a 16 pitch QFP, which gives you simi
Electronics Forum | Thu Apr 22 17:50:44 EDT 2004 | davef
Here is a starting point for you: http://www.smtinfocus.com/buyersguide_printers.html
Electronics Forum | Fri Apr 23 11:03:20 EDT 2004 | ravi
hi friend, since u are from india, you can choose very good semi-auto printer from EMS Technologies pvt ltd. MK280 one model, good & economical. My working with that m/c i found very good.
Electronics Forum | Tue May 04 09:18:54 EDT 2004 | Dennis
Speedline Technologies offer several versions of semi-auto screen printers. Speedline have a distributor in India called International Marketing Corp. Their phone number is +91-22-2522-8170. You can find out more about Speedline's products by going
Electronics Forum | Tue Jun 15 07:52:45 EDT 2004 | chandramohan
There are many manufacturers, but if you think of a Indian manufacturer you can choose very good manual printer - Rollo from Synergytech Automation Pvt.Ltd. based in Pune. Rollo has all the features of semi-automatic stencil printer which i think ver
Electronics Forum | Thu Apr 22 00:14:08 EDT 2004 | snehal acharya
we are in Process controls field we have set up our own SMT line , we have MYDATA TP9-2U Pick & Place M/C & reflow oven & manual printer. since now our product demand is increasing so for enhancement of the quality & for speedy production i wanted to
Electronics Forum | Mon Oct 10 07:40:33 EDT 2005 | pjc
To make an "L" you use a 90 deg turn unit, a.k.a. "diverter" conveyor, then connect to a straight or linking conveyor. Go to this link to see turn unit: http://www.flexlink.com/wps/public/s/10000/c/29667
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