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All kinds of resistors function use and parameter table

Name

Function and use

Characteristics

The main parameters

Carbon film resistor RT

General resistor

Low prices, is widely used in various electronic products.

Good stability, showed a negative temperature coefficient is not affected by the voltage and frequency, small pulse load stability.

Nominal resistance

Tolerance

Power rating

Temperature coefficient 

Metal film resistor RJ

Can be used for requiring high precision, good temperature stability of the circuit in the circuit, or asked to teach strict situation, such as the op amp input terminal matching resistor.

Temperature coefficient, voltage coefficient, heat resistance and noise indicators are not carbon film resistor, small volume, high precision; but the pulse load stability is poor, the price expensive than carbon film resistor.

Nominal resistance

Tolerance

Power rating  

Temperature coefficient 

Metal oxide film resistor RY

Can be used for requiring high precision, good temperature stability of the circuit in the circuit, or asked to teach strict situation, such as the op amp input matching resistance and high temperature.

Nominal resistance

Tolerance

Power rating

Temperature coefficient 

Wire wound resistor RX

Power supply circuit for resistance, the partial pressure of discharge resistance low frequency field, can not be used in high frequency circuit above 3M.

The noise is small, no current noise and nonlinear, small temperature coefficient, good stability, high accuracy, good heat resistance up to 315℃, but the distribution parameters of large, high frequency characteristics.

Nominal resistance

Tolerance

Power rating  

Temperature coefficient 

Synthesis of solid resistor RS

Should not be used for circuit requirements higher, can be used as a common resistance for general circuits.

High mechanical strength, overload ability, strong reliability and good; but the inherent noise is higher, distributed capacitance and inductance on the voltage distribution, and poor temperature stability. 

Nominal resistance

Tolerance

Power rating

Temperature coefficient 

Synthetic carbon film resistor RH

Mainly used for manufacturing high voltage high resistance resistor, micro current testing instrument and the atom probe.

Wide resistance range 100 ~ 10⁶MΩ, low cost, high working voltage; but the poor humidity resistance, noise, frequency characteristic is not good, low voltage stability.

Nominal resistance

Tolerance  

Power rating

Temperature coefficient  

For the requirement of environmental temperature, temperature coefficient, high requirements for small noise requirements of small circuit.

High temperature resistance, wide resistance range, small temperature coefficient, good moisture resistance, high working voltage, also called thick film resistor.

Nominal resistance

Tolerance

Power rating

Temperature coefficient  

Chip resistor

Widely used in various electronic products and equipment.

Small volume, light weight; suit for reflow and wave flow solder; stable performance, high reliability; low assembly cost, and suit for automatic SMT equipment; high mechanical strength, superior high frequency characteristics.

Nominal resistance

Tolerance

Power rating

Temperature coefficient  

Piece of metal oxide film resistor RJ711

For high speed pulse circuit and the accuracy requirements are very high, is one of the most precise resistors.

Low temperature coefficient, good stability, the precision can reach±0.001%, distributed capacitance, distributed inductance is small, has good frequency characteristics, time of Changshu of less than 1ms.

Nominal resistance

Tolerance  

Power rating  

Temperature coefficient 

Thermistor

Special resistor

Negative temperature coefficient thermistor resistance increased with increasing temperature and decreased obviously.

Zero power (25℃) resistance 

B value（25/50℃）

Dissipative coefficient

Thermal time constant

Power rating 

(PTC) used in battery, security, medical, scientific research, industrial motors, aerospace and other electrical and electronic temperature control of related areas. 

Its resistance value with the increase of temperature is increased step.

Zero power (25℃) resistance 

Temperature coefficient 

Dissipative coefficient 

Action current/No-action current

Withstand voltage

Residual current

Curie temperature

Minimum resistance

Thermal time constant 

Maximum operating voltage

Varistor

Varistor: the material is used for semiconductor, often appear in the abnormal overvoltage suppression circuit, the protection circuit against over-voltage; mainly used for power supply products.

Varistor is a kind of special nonlinear resistor made use of the semiconductor material, when the voltage is applied across a critical resistance decreases rapidly, otherwise the high resistance, resistance to infinity.

Varistor voltage

Maximum continuous operating voltage

Power rating

Insulation resistance

Voltage ratio

Zener voltage

Through flow capacity

Insulation voltage

Limit voltage

Fusible resistor

①The non recoverable fuse resistor: Fixed resistor effect the normal work of the circuit, when the working current is over the rated current, fuse resistor fuse fuse will be the same as, for the protection of the circuit.
②In the rated current, recoverable fuse resistor fixed resistors function. When the circuit overcurrent occurs, the solder joint recoverable fuse resistor first to melt, the spring type metal wire (or elastic sheet metal) disconnect with the resistor. In troubleshooting circuits, in accordance with the requirements of the resistor and the metal wire (or sheet metal) welding, can be restored to normal use.

Special element has a dual role of resistor and fuse. It says in the circuit with the letter "RF" or "R". 

Nominal resistance

Tolerance 

Power rating

Rated voltage

Humidity sensitive resistor

Mainly used for moisture tester.

With the humidity resistance changes, divided into: edit this paragraph of lithium chloride humidity resistance and organic polymer film humidity sensitive resistor of two.

Relative temperature

Humidity temperature coefficient

Hysteresis range

Response time

Sensitivity

Humidity measurement range

Adjustable resistor

Can gradually change the current series and its use in electric appliance, can also gradually changed and the series with the electrical voltage, can also play a role in the protection of electric appliance. A variable resistor is usually used for small signal circuit, also use large signal variable resistor in the amplifier tube electron and a few occasions.

The resistance values can be artificially adjusted to meet the needs of the circuit. Such as: sliding rheostat by resistance wire wound into a coil, by sliding the slider to change the resistance wire length access circuit, thus changing the resistance value.

Resistance range

Power rating  

Photoresistor

 Photoresistor: Photoresistor is a resistor for resistance made by semiconductor photoelectric effect increases with the value of the incident light intensity change;① the UV photosensitive resistor: sensitive to UV, including CDs, CdSe photosensitive resistor, ②the infrared photosensitive resistor: the main PBS, PbSe PbTe. InSb etc. photosensitive resistor, ③ the visible light photosensitive resistor: include selenium, cadmium sulfide, cadmium selenide, cadmium telluride, gallium arsenide, silicon, germanium, zinc sulphide photoresistor etc..

①For detection of ultraviolet. ②Widely used for missile guidance, astronomical detection, non-contact measurement, human lesion detection, infrared spectroscopy, infrared communication such as national defense, scientific research and production of industry and agriculture. ③Mainly used for a variety of photoelectric control system, such as automatic switch portal photoelectric, beacon lights, street lamps and other lighting systems for automatic light out, automatic feed and automatic water supply device.

Bright resistance（kΩ）

Dark resistance(MΩ)

Bright current

Dark current(mA)

Time constant（s）

Temperature coefficient 

Maximum working voltage(V)

Sensitivity