EIA-96 SMD resistor code encoder
Work backwards from a resistance value to the EIA-96 code printed on a 1% SMD resistor — the reverse of the decoder.
Target resistance
EIA-96 code
EIA-96 code
×10000 decade
Encoded value
closest E96 value in the table
Tolerance of encoded value
±1% parts stay within ±1% of the coded value
About the model
EIA-96 is the standard marking for 1% (E96) SMD resistors. The two digits are the mantissa (01 = 100 … 96 = 976) and the letter is the multiplier: Z = 0.001, Y = 0.01, X = 0.1, A = 1, B = 10, C = 100, D = 1 000, E = 10 000, F = 100 000. The calculator normalizes the target into the [100, 976] decade and picks the nearest mantissa, so 10 kΩ encodes as 01C (100 × 100) and 100 kΩ as 01D (100 × 1 000). 4.7 kΩ sits between E96 mantissas — the closest marking is 66B (475 × 10 = 4.75 kΩ), about 1.06% off the nominal value.
For the parts themselves: SMD resistors and resistor kits carry these markings on their bodies.
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Frequently asked questions
How do I convert a resistance value to its EIA-96 code?
The tool normalizes the target into the [100, 976] mantissa decade and picks the nearest E96 mantissa, then appends the letter multiplier. For 10 kΩ it finds 100 × 100, which encodes as 01C; for 100 kΩ, 100 × 1000 encodes as 01D.
What do the letters in an EIA-96 code mean?
The two digits are the mantissa (01 = 100 up to 96 = 976) and the letter is the power-of-ten multiplier: Z = 0.001, X = 0.1, A = 1, B = 10, C = 100, D = 1000, E = 10000, F = 100000. EIA-96 is the IEC 60062 marking used on ±1% (E96) SMD resistors, covering 0.1 Ω to 97.6 MΩ.
What is the EIA-96 code for a 4.7 kΩ resistor?
4.7 kΩ sits between E96 mantissas, so the closest marking is 66B, which is 475 × 10 = 4.75 kΩ — about 1.06% off the nominal value. The tool flags any result that is more than 1% away, since a true ±1% part should stay within ±1% of the coded value.
ICBOMS provides this tool for reference only.