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Description / Abstract:
Purpose. This specification defines guidelines for choosing sizes of
printed wiring boards, using standard fabrication panel sizes.
Recommendation. While this document should be helpful in establishing
areas of concern in choosing a PWB size, the designer should consult
with the manufacturer to verify that his capabilities, and restrictions,
are similar to those used in this document
Clarifications. This document makes an assumption that the designer is
free to choose any size board desired. This freedom is not true often
due to the particular needs of the product being designed. However, an
understanding of the principles in this guidelines can be of use to the
designer because it affords and overview of manufacturing requirements
to the design community.
It should also be noted that the limits listed in this document are
appraisals of what is generally available at most companies, using
normal techniques. Under special conditions, using special tooling and
equipment, many things are possible that far exceed what is normally
done. These special designs are usually not desirable because of cost
or reduced producability.
The main emphasis of this document is toward rigid materials commonly
available. Flexible and/or special materials often are available in