Precision resistor is a kind of resistor with low resistance error, good thermal stability, and the distribution parameters reach a certain standard. Because of the strict requirements of alloy materials smelting technology and related processes, high precision alloy materials, such as CuMn12Ni, are needed for precision resistors made by stamping with alloy materials. The precision of resistors produced by CuMn12Ni alloy material is less than ±1%, and the precision resistance can be obtained by further adjusting the alloy sheet after stamping.



CuMn12Ni alloy is a manganese-copper alloy with a resistivity of 43, a resistance temperature coefficient of ±3-±10, a density of 8.4, and a temperature range of 20-50 °C. The precision resistor made of this alloy material has the characteristics of high stability, low temperature drift coefficient and high precision.

At present, there is increasingly demand for precision resistors for high-end instruments on the market. The tolerance of common metal film resistors and wirewound precison resistors are hard to be less than 1%. Their TCRs are big. The common ones are ±15ppm/ °C, ±25ppm/ °C, ±50ppm/ °C, ±100ppm/ °C, etc. This kind of resistance can not meet the needs of many industries and technologies. At present, the precision resistor introduced by Microhm can reach 0 PPM to  ±3 PPM, which is in line with the requirements of the market for precision resistors.


The tolerance of Microhm precision resistors, made of CuMn12Ni alloy materials, can reach ±0.2%, ±0.1% and ±0.05%. The precision of the resistors is greatly improved by this alloy material.
The production process is simple and quick, which makes the application of Microhm ultra-precision resistor more extensive.


Microhm precision resistance is widely used in medical equipment, instruments, electrical equipment, precision electronic products and so on. In addition, they are also used in aviation, aerospace, navigation, precision instruments, mobile communications, consumer electronics, automotive electronics, medical equipment and other industries.