RKM code

The RKM code, also referred to as "letter and numeral code for resistance and capacitance values and tolerances", "letter and digit code for resistance and capacitance values and tolerances", or informally as "R notation" is a notation to specify resistor and capacitor values defined since 1952 in the IEC 60062 (formerly IEC 62) standard of the International Electrotechnical Commission. Corresponding national standards include DIN 40825 (1973) of the Deutsches Institut für Normung, BS 1852 (1975) of British Standards Institution, and IS 8186 (1976) of the Bureau of Indian Standards; as well as the pan-European EN 60062 (1993) of the European Standards Organizations. The updated IEC 60062:2016, amended in 2019, comprises the most recent release of the standard.

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