What Is a Thin Film Resistor?

Thin film resistors are made by evaporation of a certain resistivity material on the surface of an insulating material by a method similar to evaporation. Generally, the insulating material commonly used for this type of resistor is a ceramic substrate.

In recent years, with the rapid development of electronic information technology,

There are two main differences between thin film resistors and thick film resistors:

First, the difference in film thickness,

Thin film resistor carbon film resistor

The crystalline carbon is deposited on a ceramic rod skeleton. Carbon film resistors are low cost. Stable performance. Wide resistance range. Low temperature coefficient and voltage coefficient make it the most widely used resistor at present. ^[2]

Thin film resistor metal film resistor

The alloy material is vapor-deposited on the surface of the ceramic rod skeleton by a vacuum evaporation method. Metal film resistors have higher accuracy than carbon film resistors, good stability, noise, and temperature coefficients are widely used in instruments and communication equipment. ^[2]

Thin film resistor metal oxide film

A layer of metal oxide is deposited on the insulating rod. Because it is an oxide itself, it is stable at high temperatures, resistant to thermal shock, and has a strong load capacity. ^[2]

Thin film resistors

The conductive composition suspension is obtained by coating the substrate, so it is also called paint film resistance. Because its conductive layer has a granular structure, it has a large noise and low accuracy. It is mainly used to manufacture high-voltage, high-resistance, small-sized resistors. ^[2]