Rob-

cps stands for centipoise, a unit of viscosity. KCPS is thousands of
centipoise. ASTM, and possible IPC, have methods for testing paste
viscosity. Also, try suppliers such as alphametals (Cookson).

Michael Alderete



Rob wrote...
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Date:    Mon, 22 Mar 1999 14:31:17 -0500
From:    Rob Watson <[log in to unmask]>
Subject: Paste Viscosity

Boy, I am full of questions today... As you can tell, I am really digging
into
the screen printing operations.

I have one more question, I have a troubleshooting guide for the SMT
process.
Actually, a presentation someone gave me from a SMTA meeting about 2 years
ago.

Anyways, this guide recommends that solder paste viscosity be between 1000
KCPS
+/- 10%.
Does anyone know what this is?  How would you go about testing to verify
this?
What test methods and equipment would you use to do this?

Thanks again for your support in advance,

Rob Watson
Sanmina Corp.

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