Use this electronics calculation for a first-pass component, converter, signal, motor, or sensor estimate when the stated operating conditions and units match the device data.

First band

Required string input.

Second band

Required string input.

Third band

Required string input.

Decode a three-band capacitor color code into capacitance in nanofarads. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Capacitance (nF)

The resulting capacitance returned as a number.

• Capacitance, ESR, leakage, ripple rating, lifetime, and self-resonance vary with frequency, temperature, DC bias, aging, dielectric, package, and mounting. Nominal capacitance alone does not determine in-circuit impedance or reliability.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Check the result against the current datasheet and worst-case operating corners, then verify the circuit or measurement with simulation and bench testing where failure matters.

• Inductor Color Code

  Decode a three-band inductor color code into inductance in microhenries.

• Resistor Color Code Decode

  Decode a three-band resistor color code into resistance in ohms.

• Decap Resonance

  Compute the resonant frequency in megahertz of a decoupling capacitor from its mounted series inductance in nanohenries and capacitance in nanofarads.