Rolled solder is another name for roller tinning.  This surface finish
applied to bare boards is a coating of tin-lead, tyically 1-2 microns
thick.  Still available today from some PCB fabricators today, it is a low
cost surface finish (cheaper than HASL) typically used on 1-layer PCBs,
sometimes 2-layer PCBs.

See Chapter 15 Solder Finishes in "Th Multilayer Printed Circuit Board
Handbook, ed. J.A. Scarlett, Electrochemical Publications Limited, 1985,
for more detail and history of the process.

At 10:50 AM 8/8/96 PDT, you wrote:
>Simple and to the point.
>
>What is 'rolled solder'?
>
>Thanks,
>Chaye

Regards,
David Estes
PCB/PCBA Commodity Management
Texas Instruments
ph: 214-997-2942
fax: 214-997-2188
e-mail:  [log in to unmask] (or the above address)

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