"Product name": carbon film resistors, metal oxide film resistors, metal film resistors, high voltage resistance and high power wire wound resistors, braking resistors, braking resistors, cement, corrugated resistance resistance

"Product": 1/4-15, 18, 56, 22 ω ω ω ω

"Product":

[product material]:

[product color]:

Resistance can be divided into carbon film resistors, metal oxide film resistors, precision metal film resistors, high voltage resistance and high power wire wound resistors, braking resistors, braking resistors, resistors, cement resistor ripple, ladder (ship) aluminum resistor, RX24 yellow aluminum resistance, milliohm (manganese-copper) resistance, load resistance

Carbon film resistor (RT)

Material: high temperature organic compounds (n-hexane, benzene and other hydrocarbons) generated by thermal decomposition of the carbon accumulation at the surface of the ceramic body. Carbon film resistors wide resistance range, good stability, is small and negative temperature coefficient, is the most widely used of the resistor.

Ultra small carbon film resistor: RT13 power: 0.125W resistance range: 1-1M tolerance: G,J,K ambient temperature range: -55---125C rated temperature 70 c maximum working voltage: 150V temperature coefficient: -400---1500PPM weight: 0.1G

Carbon film resistor: RT-0.25 power: 0.25W resistance range: 10-5.1M tolerance: J,K ambient temperature range: -55---100C rated temperature 40 c Max 350V temperature coefficient: -600---1200PPM weight: 1.5G

Carbon film resistor: RT-1 power: 1W resistance range: 27-10M tolerance: J,K

Carbon film resistor : is using organic adhesive carbon ink, graphite and fill material into suspension coating on the insulating substrate, and is formed by heating aggregates. Decomposition at high temperatures and a vacuum of gaseous hydrocarbons, carbon deposits on the ceramic rod or pipe, forming a film of crystallized carbon. Changing the carbon film thickness and notch length of the change in the method of carbon films, different values can be obtained. Carbon film resistor low cost, poor performance and stability, are generally not suitable for general purpose resistor. But it's easy to make higher resistance of the membrane, so primarily as a high impedance high voltage resistors. It uses the same high-voltage resistors. RT carbon film resistors commonly used symbols for marking, r for resistor, t represents the material is carbon film, for example, a gun case is marked with RT47kI, saying it is a resistance 47k ω, carbon film resistor tolerance is ± 5%. Carbon film resistor power rating resistance shell out no longer, and the size difference between length and diameter of the electron gun, length, diameter, big power resistors. Carbon film resistor axial wire, tie-lead and did not take the lead, and so on. Carbon film resistors resistance value range of 1 ω ~10M ω. Rated power 0.125W, 0.25W, 0.5W, 1W, 2W, 5W, 10W, etc. Carbon film resistors of larger, in order to meet the needs of small apparatus, and make small carbon film resistors RTX-out, power is only 0.125W, most made of color coded resistance.

A, resistor

Resistance in the circuit with "r" number, such as: R15 resistance number 15. Resistance in the circuit's primary role as shunt, current-limiting, partial pressure, offset, filter (used in combination with capacitors) and impedance matching, and so on.

1, parameter identification: the unit of resistance in ohms (ω), magnification: kiloohm (kΩ), megohms (MΩ). Conversion methods are: 1 mega-ohm = 1 million euro = 1000000 euro

The parameter Callout 3 ways of resistance, namely direct method, method of color and array methods.

A, standard method is mainly used for patches and so on small circuits, such as:

472 47x102 Omega (4.7K), 104 100K

B color ring marking method using a maximum, for example as follows:

Four five-color ring color ring resistance resistors (precision)

2, resistor color code location and magnification relations shown in the following table: color significant figures ratio allowable deviation (%)

Silver/10-2 ± 10

Gold/10-1 ± 5

Black 0/100

Brown 1 101 ± 1

Red 2-102 ± 2

Orange 3/103

Yellow 4/104

The Green 5 105 ± 0.5

Blue 6-106 ± 0.2

Purple 7 107 ± 0.1

Gray 8/108

White 9 109 + 5 to-20

Colorless//± 20

General resistors are marked with 3 digits, the first two is a valid number, the latter is raised, for example: 152 15*10 square =1500 ohms

Precision resistors are marked with 4 digits, the first three is a valid number, the latter is raised, for example: 1502 150*10 square =15000 ohms

Ordinary resistors precision resistors have the same reading the color wheel, just ordinary resistance of only the first two digits, and the top three are digits precision resistors, fourth rate, the fifth error, precision resistor also called five-color ring resistance.

Color ring resistance is divided into four color rings and colored rings, said four-colour ring. As its name suggests, is to use four colored ring represents the size value. Each color represents a different number, as follows:

Black 0

Brown 1 red 2 Orange 3 yellow 4 green 5 blue 6 purple 7 grey 8

White 9

Gold and silver errors

Colored rings meaning is as follows:

First color wheel: the first digit of the resistance;

Article link: resistance of the second digit;

Article link: powers of 10;

The fourth color circle: error.

There are more accurate "colored rings" resistance, with five color ring resistance resistance size, as follows:

First color wheel: the first digit of the resistance;

Article link: resistance of the second digit;

Article link: resistance of the third is not digital;

The fourth color circle: resistance multiplier number of powers of 10;

Article fifth color: error (common Brown, is 1%)

(Four color ring resistance error was percent, often colored rings for 1%, accuracy)