PM12645S-1R2M

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Introduction to Fixed Inductors

A fixed inductor is an electronic component designed to maintain constant magnetic flux and inductance values independent of changes in external circuit parameters. It performs this function by using internally formed magnetic short circuits in the form of inductors, transformers, and coils.

A fixed inductor is most often used as part of a power system’s filter. In this filter, the inductor is connected in series with a capacitor: the resulting filter acts as a low-pass filter, passing low-frequency signals while blocking high-frequency ones.

PM12645S-1R2M: Application Field and Working Principle

The PM12645S-1R2M is a fixed inductor manufactured by PEI-Genesis. It is rated for maximum inductance of 1.2 mH and has an operating temperature range of -55°C to 125°C.

This fixed inductor is designed primarily for power applications such as switching power supplies, DC/DC converters, PFC ballast, and industrial power supplies. It can also be used in a wide variety of other applications such as audio amplifiers, cellular phone transmitters, and other general purpose electronics.

The PM12645S-1R2M uses a two-layer ceramic pot core design to provide high inductance and low DCR in a frquency range up to 10 MHz. The core is constructed from a high quality powdered iron and an internal air gap is used to provide appropriate values of inductance. Its epoxy resin coating assists in providing high insulation and mechanical strength.

Conclusion

The PM12645S-1R2M is a fixed inductor designed for power applications and is rated for maximum inductance of 1.2 mH. It uses a two-layer ceramic pot core design to provide high inductance and low DCR in a frequency range up to 10 MHz. The epoxy resin coating assists in providing high insulation and mechanical strength. It can be used in a wide variety of applications, from power supplies to audio amplifiers.

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