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About This Item
Full Description
The definition of such series with a defined numeric resolution is a basic prerequisite for the marking and coding of capacitors and resistors with their respective capacitance or resistance values as described in IEC 60062.
NOTE The number series defined in this standard are based on progressive ratios of r√10 , with r = 3 · 2i, and i being a whole number in the range of 0 to 6, hence e.g. of 12√10 .
This system of progressive ratios had been established prior to the 1952 release of the first edition of this standard as a consequence of the standardisation of tolerances at ±5 %, ±10 % and ±20 % and the related commercial practice. An adoption of the ISO practice, based on a 10√10 system, was never considered achievable.
Cross References:
IEC 60062
EN 60062
ISO 3
All current amendments available at time of purchase are included with the purchase of this document.