Visualizing Component Values
- Select the number of Bands (4, 5, or 6) on your physical resistor.
- Click the Color Swatches for each band (Digit 1, Digit 2, Multiplier, etc.).
- Observe the Interactive Resistor Visual to confirm it matches your real-world part.
- View the calculated Resistance Value (formatted in Ω, kΩ, or MΩ).
- Check the Precision Metrics (Tolerance and Temperature Coefficient).
Frequently Asked Questions
How do I read a resistor color code?
Read the bands from left to right. The first 2 or 3 bands represent digits. the next band is the multiplier (power of 10), and the final band is the tolerance (precision).
What is the 5-band vs 4-band difference?
A 5-band resistor is a precision resistor that includes a third digit band for higher accuracy. This allows for values like 10.5 ohms, which are difficult to represent with only 2 digits.
What does the 6th band mean?
The 6th band represents the Temperature Coefficient (measured in ppm/K). it tells you how much the resistance will change as the operating temperature fluctuates.
Which way is 'Left' on a resistor?
Look for the band that is closest to one end of the resistor, or a metallic band (Gold or Silver) which is almost always the tolerance and placed on the right.
Expert Droid Benefits
- High-fidelity visual resistor rendering
- Interactive color swatch grid interface
- Real-time value formatting (Ω, kΩ, MΩ)
- Supports 4, 5, and 6 band industrial standards
- 100% private — your component specs stay local
- Mobile-optimized for checking parts on the lab bench