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Magnetic disk for data storage devices, 107 500 flux transitions per track, 266 mm and 356 mm diameter

1st edition, September 1980

This Standard ECMA-65 specifies the mechanical, physical and magnetic properties of a non-lubricated magnetic disk intended for mounting in data storage devices.

Two types are specified, Type A and Type B, which have the same magnetic characteristics and are related to the same Standard Reference Surface. They differ only with regard to their outer diameter and some related numeric values.

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Technical CommitteeTC16 (this TC is no longer active)