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Ring color Significant figures Multiplier Tolerance Temperature coefficient
Name Code RAL [nb 1] Percent [%] Letter [ppm/K] Letter
None ±20 M
Pink PK 3015 ×10−3 [1] ×0.001
Silver SR ×10−2 ×0.01 ±10 K
Gold GD ×10−1 ×0.1 ±5 J
Black BK 9005 0 ×100 ×1 250 U
Brown BN 8003 1 ×101 ×10 ±1 F 100 S
Red RD 3000 2 ×102 ×100 ±2 G 50 R
Orange OG 2003 3 ×103 ×1000 ±0.05 [1] W 15 P
Yellow YE 1021 4 ×104 ×10000 ±0.02 [1] [nb 2] [2] P 25 Q
Green GN 6018 5 ×105 ×100000 ±0.5 D 20 Z [nb 3]
Blue BU 5015 6 ×106 ×1000000 ±0.25 C 10 Z [nb 3]
Violet VT 4005 7 ×107 ×10000000 ±0.1 B 5 M
Gray GY 7000 8 ×108 ×100000000 ±0.01 [1] [nb 4] [nb 2] [2] L (A) 1 K
White WH 1013 9 ×109 ×1000000000

References

  1. ^ a b c d "IEC 60062:2016-07" (6 ed.). July 2016. Archived from the original on 2018-07-23. Retrieved 2018-07-23. [1]
  2. ^ a b VR37 High ohmic/high voltage resistors (PDF). Vishay. 2015. Archived from the original (PDF) on 2016-09-10.
Notes
  1. ^ For illustration only. IEC 60062:2016 and IEC 60757:1982 do not specify or intend to specify color boundaries and properties, and colors shown here as example are applied for the purpose of consistent illustration only.
  2. ^ a b Before yellow and grey colored rings were assigned to tolerance values of ±0.02% and ±0.01% with IEC 60062:2016, some manufacturers used yellow and grey as substitute for gold (±5%) and silver (±10%) colored rings in high-voltage resistors to avoid metal particles in the lacquer.
  3. ^ a b Any temperature coefficient not assigned its own letter shall be marked "Z", and the coefficient found in other documentation.
  4. ^ Before a grey colored ring was assigned to a tolerance of ±0.01% with IEC 60062:2016, some manufacturers used a grey colored ring to indicate a non-standardized tolerance of ±0.05%.