Resistor Color Codeing:
Mnemonic phrases for remembering color codes of resistor:
- Bad Boys Ravish Our Young Girls But Violet Gives Willingly.
- Bad Beer Rots Our Young Guts, But Vodka Goes Well. Get Some Now!
- B.B. ROY of Great Britain had a Very Good Wife.
- Buffalo Bill Roamed Over Yellow Grass Because Vistas Grand Were God's Sanctuary.
- Bully Brown Ran Over a Yodeling Goat, Because Violet's Granny Was Gone Snorkeling.
- Buy Better Resistance Or Your Grid Bias May Go Wrong.
- Bill Brown Realized Only Yesterday Good Boys Value Good Work.
- Better Be Ready Or Your Great Big Plan Goes Wrong.
- Better Be Ready Or Your Great Big Venture Goes West.
- Black Bananas Really Offend Your Girlfriend But Violets Get Welcomed.
- Black Birds Run Over Your Biting Visible Gray Worms.
- Big Boys Race Our Young Girls But Violet Generally Wins.
- Black Boys Rape Our Young Girls Behind Victory Garden Walls.
- Black Boys Rape Our Young Girls But Virgins Go Without.
- Numerically the value (0-9) of a resistor via the color-coded bands: Black (0), Brown (1), Red (2), Orange (3), Yellow (4), Green (5), Blue (6), Violet (purple, 7), Gray (8), and White (9).
- Also, note that the red through violet are the colors of the rainbow (in order). Although the ROY G. BIV mnemonic for rainbow colors includes indigo between blue and violet.
|Figure 1: A diagram of a resistor, with four color bands A, B, C, D from left to right.|
|Figure 2: A diagram of a 2.7 Mega Ω color coded resistor.|
To distinguish left from right there is a gap between the C and D bands.
- Band A is the first significant figure of component value (left side)
B is the second significant figure (some precision resistors have a third significant figure, and thus five bands). Band C Band the decimal multiplier is
- Band D if present, indicates
of value in percent (no band means 20%) tolerance
|Figure 3: 4.7 Kilo Ω resistor with ±5% tolerance.|