Printed Circuit Board Assembly & PCB Design SMT Electronics Assembly Manufacturing Forum

Printed Circuit Board Assembly & PCB Design Forum

SMT electronics assembly manufacturing forum.


Solder paste dispensing

Paul Staniford

#23816

Solder paste dispensing | 18 March, 2003

I am looking at dispensing solder paste using a Fuji GLV glue dispenser. This is to enable us to produce prototype pcb's without the need to purchase a stencil. Has anybody tried this before? If so what problems should I expect to encounter.

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#23817

Solder paste dispensing | 18 March, 2003

The FGLV has a air pressure displacement valve, which is designed for adhesives. A positive displacement valve is better suited for solder pastes. Check with Fuji to see if they offer optional valves.

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Rob_C

#23818

Solder paste dispensing | 18 March, 2003

With a standard valve and no-clean solder paste you may get a few good dots. But, repeatability will be terrible too many variable, air-pressure, board height (two post nozzle), valve time on/off, retract height, retract time, etc... A RMA paste with positive displacement value would have the best results. Just buy the stencil they only cost about $300. and can be turned in a day or two, your NRE of messing with the GL will cost more. You will also be able to uncover potential issues before product launch.

Fuji GL (Good Luck)

Rob smtstart.com

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