There are many types of fixed resistor, the choice of which material and structure of resistor, should be based on the specific requirements of the application circuit.

High frequency circuit should choose distributed inductance and distributed capacitance of small non-wire wound resistors, such as carbon film resistor, metal resistor and metal oxide film resistor, film resistor, thick film resistor, alloy resistor, anti-corrosion coating resistor, etc. Low noise resistors, such as metal film resistors, carbon film resistors and wire wound resistors, should be selected for high gain small signal amplifying circuits, rather than synthetic carbon film resistors and organic solid resistors with large noise.

Wire-wound resistor has high power, low current noise, high temperature resistance, but large volume. Common wire-wound resistors are often used in low-frequency circuits or as current-limiting resistors, divider resistors, deflector resistors or biasing resistors for high-power tubes. High precision wire-wound resistors are used in fixed attenuators, resistance boxes, computers and various precision electronic instruments.

The resistance value of the selected resistor should be close to a nominal value of the calculated value in the application circuit, and the resistor of the standard series should be preferred. The resistor used in general circuit allows error of ±5%~±10%. Precision instruments and special circuits used in the resistor, the precision resistor should be selected, the precision of the resistance within 1%, such as 0.01%, 0.1%, 0.5% of these magnitude of resistance should be used Jabisin resistance. The rated power of the selected resistor should meet the requirements of the power capacity of the resistor in the application circuit. Generally, the power of the resistor should not be increased or decreased at will. If the circuit requirement is power type resistor, its rated power can be higher than the actual application of the circuit required power 1~2 times.