What are the main aspects of the high precision of thin film high-precision resistors?

The high precision of thin film high-precision resistors is mainly reflected in the following aspects:

1、 Small resistance error
The resistance error of thin film high-precision resistors is very small, usually between ± 0.01% and ± 0.1%, and some high-precision models can even control the tolerance within ± 0.005%. This high-precision resistance error makes thin film high-precision resistors important for circuits that require precise resistance values.

2、 Low temperature coefficient
The temperature coefficient (TCR) of thin film high-precision resistors is very low, which means that the degree of change in their resistance value with temperature is very small. This ensures that the resistance value of the resistor can remain stable under different temperature conditions, thereby improving the performance consistency of the circuit in various environments.

3、 Good long-term stability
The long-term stability of thin film high-precision resistors is also a very important indicator. Its resistance remains stable over long-term use and will not undergo significant changes over time. This good long-term stability ensures the performance stability and reliability of the circuit during long-term operation.

4、 Low noise
The low noise generated by thin film high-precision resistors makes them particularly suitable for use in high-sensitivity measurement and signal processing circuits. For example, in applications such as audio devices and sensor circuits, low noise characteristics help reduce additional noise and errors introduced by resistors, thereby improving the overall performance of the system.

5、 High distribution parameter index
The distribution parameters (such as distributed capacitance and distributed inductance) of thin film high-precision resistors are also relatively high. This means that in high-frequency circuits, thin film high-precision resistors can maintain good performance and will not cause a decrease in circuit performance due to the influence of distributed parameters.

In summary, the high precision of thin film high-precision resistors is mainly reflected in small resistance error, low temperature coefficient, good long-term stability, low noise, and high distribution parameter indicators. These characteristics make thin film high-precision resistors have broad application prospects and important application value in multiple fields.