Alejandro,

        The print speed is more a solder paste factor than a printer issue.
We just tested a solder paste with 20 mil pitch components and 0402 with a
print speed of 4 in/sec. The board was a 11 by 8 inches. The cycle time was
around the neighborhood of 15 seconds with no 2D inspection, fiducial
reading was of course included on the Screen Printing program. I would
recommend you to talk to your paste manufacturer.

Jorge Rodriguez
Varian Inc
Tempe, AZ

-----Original Message-----
From: Becerra Alejandro [mailto:[log in to unmask]]
Sent: Tuesday, May 07, 2002 6:03 AM
To: [log in to unmask]
Subject: [TN] Cycle Time for Solder Paste Printing



Hello to All,

We are planning to build a new product, and our bottleneck is the solder
paste printing operation.
The printing length is 8 inches and the product has components up to 20 mil
pitch and 0402 chips.
The product is panel with only one board.
We are interested in a throughput of 235 boards (printings) per hour, then
we need a cycle time less than 15 seconds.
Is it possible to have a cycle time as low as this number?
Is there a printer capable to do it?
What is a reasonable cycle time for solder paste printing operation?
Right now our cycle time (in a board with a printing length of 11 inches)
varies from 24 to 26 seconds depending on the printer that we use.

Have you heard about the Ultraprint 2500 (MPM/Speedline) with dual conveyor?

Any comment input will be greatly appreciated.

Thanks in advance

Alejandro Becerra

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