Inductor colour code
Decode the cited four-band Vishay inductance convention in microhenries.
Development preview. Check the assumptions below before relying on a result. Calculations run in your browser.
How it calculates
Model: Inductance (µH) = first two colour digits × multiplier
Assumptions
- Read significant digits first and tolerance last. Military five-dot and proprietary RF dot conventions are not decoded.
Worked example
These are the calculator's default inputs. Change any input above to recalculate.
Inputs
- Four colour names in reading order
- brown black brown gold
Results
- Inductance
- 0.0001 H
- Tolerance
- 5 %
- Minimum inductance
- 0.000095 H
- Maximum inductance
- 0.000105 H