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.
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.
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.
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.
