A forum where you can get useful answers for these questions can be found at:On Wednesday 04 December 2002 07:23, you wrote:Which paste should I use for national-semi microSMD package with 0.5mm raster, 0.2mm bumps? I would like to print paste with screen instead of stencil, but problem is with 80 mesh (only suitable for Type 3 paste), because screen wire raster is close to bump raster... Is only option laser formed stencil?That has been covered in depth by some of the mags aimed at factory engineers. There's a guy who specialises in writing jargon loaded articles on the subject (Bob Willis?). Never read much of it, mind you - life's too short for that :)
I have no expierience with screens; I use a pneumatic paste dispenser (syringe) and place 0201 components and 8 bump microSMD IC's manually for very small preamplifiers and telemetry transmitters.http://www.smtnet.com/
Regards, Tinco Brouwer
Specialist Analoge technieken
Afdeling Elektronica Biologie
Vrije Universiteit
Amsterdam
