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SMD Resistor Code Decoder — 3/4-Digit & EIA-96 Codes
Enter the tiny code printed on a surface-mount resistor to decode its actual resistance value — covering the standard 3-digit and 4-digit numeric codes as well as the more compact EIA-96 letter+number system used on higher-precision SMD resistors, which is not decodable the same way as the simpler numeric codes.
How to use SMD Resistor
- Enter the code printed on the resistor.
- Select the code type if not auto-detected (3-digit, 4-digit, or EIA-96).
- Read the decoded resistance value.
Frequently asked questions
- How do the standard 3-digit and 4-digit codes work?
- Like capacitor codes — the last digit is a power-of-ten multiplier applied to the preceding significant figures, so 103 means 10 × 10³ Ω = 10,000 Ω = 10 kΩ.
- What is EIA-96 and why is it different?
- EIA-96 uses a 3-character code (two digits plus a letter) referencing a standardized lookup table of 96 values rather than encoding significant figures directly — it is used on smaller precision resistors where space for a full numeric code is limited.
- How can I tell which code type I'm looking at?
- A code ending in a letter is EIA-96; a purely numeric 3 or 4-digit code follows the standard multiplier system — this tool auto-detects based on that pattern.
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