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BS1852 Resistor Coding

Some types of resistor have markings based on a system of coding defined in BS 1852. This system involves marking the position of the decimal point with a letter to indicate the multiplier concerned. A further letter is then appended to indicate the tolerance as shown in the table below.

LetterMultiplier
R1
K1000
M1000000
LetterTolerance
F1%
G2%
J5%
K10%
M20%

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Page last modified on July 19, 2011, at 02:35 PM