What are the causes of low inductance value？

The particularly important electrical performance of inductors in use is the inductance value! But many people in the process of using inductors will encounter the problem of reduced sensing value, do you know what are the reasons for this?

Inductance value is an important performance parameter of inductor, it is an important parameter to measure the energy storage and noise filtering ability of inductor. The inductance value of inductor is generally closely related to the number of coil turns, winding density and magnetic core type. When these aspects have not changed, what are the reasons that may cause the inductive value of the inductor to suddenly drop?

1, the use of temperature change: may be the change of temperature caused by the change of the sensing value, under normal circumstances, when the temperature is reduced, it will cause the resistivity of the inductor to rise, which will cause its sensing value to decrease;

2, it may be the change of humidity: the effect of humidity on the inductance is somewhat similar to the effect of temperature on the inductance. When the humidity is reduced, it will cause the resistivity of the inductor to rise, and the inductance value will be reduced.

3, the product aging caused by the decrease in sensing value: if the inductor is used for a long time, it may cause the aging phenomenon of the inductor. The aging of inductance will cause its electrical performance to decline, thus affecting the inductance value.

4, long-term overload use: if the inductor is in the state of overload operation for a long time, it will also cause its sensing value to decrease.

In summary, there are many reasons for the decrease of the inductance value of the patch, and of course there are more aspects not mentioned above. In order to ensure the stability and reliability of the circuit, we need to check and maintain the chip inductance regularly. If you are troubled by such problems, please consult us!