Resistors - Letters and Digit Codes
Letter and digit codes to indicate resistor values and tolerances
Resistor Value Codes
Resistor values can be indicated with letters and digit codes where letters represent decimal points:
- R = decimal point (ohms)
- K = thousands (kilohms)
- M = millions (megohms)
Common Value Examples:
- 0.47 Ω = R47
- 1 Ω = 1R0
- 4.7 Ω = 4R7
- 47 Ω = 47R
- 100 Ω = 100R
- 1 kΩ = 1K0
- 1 MΩ = 1M
Tolerance Codes
Tolerance is indicated as:
- F = ±1%
- G = ±2%
- J = ±5%
- K = ±10%
- M = ±20%
Example:
4R7K = 4.7 Ω ±10%