What is the Marking Method of Resistance?(I)

The marking methods of resistance and allowable deviation are straight method, color standard method and character symbol method.

1. The resistance and error of the resistance are directly printed on the resistor by the method of direct marking (no error is marked as the allowable error ±20). 3 Ω 3 I is also used to indicate that the resistance value is 3.3 Ω and the allowable error is ±5%. , 1 K8 indicates that the resistance is 1.8 K Ω, the allowable error is ±20%,

5 M 1 Ⅱ indicates that the resistance is 5.1 M Ω and the allowable error is ±10.

2. The color-coded method applies the color rings of different colors to the resistor (or capacitor) as the nominal value and the allowable error of the resistor (capacitor).

Value corresponding to color.

The color brown, the first digit effective number: 1, the second digit effective number: 1, the multiplier: 101, the allowable error: ±1.

The color red, the first digit effective number: 2, the second digit effective number: 2, the multiplier: 102, the allowable error: ±2.

The color orange, the first digit effective number: 3, the second digit effective number: 3, the multiplier: 103, the allowable error: -.

Color yellow, first digit effective number: 4, second digit effective number: 4, multiplier: 10? , allowable error: -.

The color green, the first digit effective number: 5, the second digit effective number: 5, the multiplier: 105, the allowable error: ±0.5.

The color blue, the first digit effective number: 6, the second digit effective number: 6, the multiplier: 106, the allowable error: ±0.2.

The color violet, the first digit effective number: 7, the second digit effective number: 7, the multiplier: 107, the allowable error: ±1.

Color gray, first digit effective number: 8, second digit effective number: 8, multiplier: 108, allowable error: -.

The color white, the first digit effective number: 9, the second digit effective number: 9, the multiplier: 109, the allowable error: -.

The color black, the first digit effective number: 10, the second digit effective number: 10, the multiplier: 100, the allowable error: -.

Color gold, first digit effective number: -, second digit effective number: -, multiplier: 10 -1, allowable error: ±5.

The color silver, the first digit effective number: -, the second digit effective number: -, times multiplier: 10-2, the allowable error: ±10.

Color colorless, first digit effective number: -, second digit effective number: -, multiple multiplier: -, allowable error: ±20.

For example, red, brown gold means 220 Ω ±5%.

Yellow purple orange silver means 47 k Ω ±10%.

Brown, purple, green, gold, brown means 17.5 Ω ±1%.