ASTM D 748 Standard Specification for Natural Block Mica and Mica Films Suitable for Use in Fixed Mica-Dielectric Capacitors

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ASTM D 748 Document Information:

Title
Standard Specification for Natural Block Mica and Mica Films Suitable for Use in Fixed Mica-Dielectric Capacitors

ASTM International

Publication Date:
Sep 10, 2000

Scope:

This specification covers natural block mica² and mica films (cut and uncut) suitable for use in the manufacture of fixed mica-dielectric capacitors, based on electrical, visual, and physical properties as determined by tests specified herein.

The values stated in inch-pound units are to be regarded as the standard.

² Coutlee, K. G., “Electrical Quality Classification of Raw Mica by a Rapid, Direct-Reading Test Method,” Proceedings, ASTM, Vol 46, 1946, p. 1486.

Keywords:

classes

mica films

capacitor

grades

form

weight loss

mica

dielectric strength

block mica

electrical conductivity

visual quality

Q value

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