CMH322522-221KL

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Fixed inductors are mainly used in power electronic circuits, such as higher voltage current conversion, frequency conversion, and AC-DC-AC conversion, etc. The CMH322522-221KL is one of the popular fixed inductors. Inside the device, a steel core is wound with a coil of insulated copper wire to form an inductor. Moreover, the inductor is housed in a molded plastic case which increases its durability and offers some protection from surrounding environment.

The CMH322522-221KL fixed inductor includes a bobbin-wound inductor with an internal glass passivation layer. The product offers stable inductance within a temperature range of -55°C to + 105°C and supports a current rating of up to 500 mA. It also exhibits a tight tolerance of ± 20 % at + 25°C, dielectric strength of 1000 Vac, and a thermal resistance of 120°C per watt. Moreover, this device has a high self-resonant frequency of up to 10 MHz. The operating temperature range of this inductor is - 40°C to + 125°C.

The CMH322522-221KL application fields include DC-DC and AC-DC converters, and automotive, consumer electronics, and communications systems. It is used most often in the switch-mode power supply circuits as a filter coil and to suppress high-frequency current spikes. Its dissipates minimal power loss since it can have very small DC resistance. The inductor works with very low losses even at high frequencies.

The working principle of the CMH322522-221KL fixed inductor is based on the conversion of electrical energy into magnetic energy and vice versa. The inductor can provide inductance to a circuit when electric current flows in it. This flow of current induces an opposite electromotive force (EMF) in the opposite direction. The magnitude of the EMF is proportional to the rate of change of the current flowing in the inductor.

The larger the inductance of the inductor, the greater the opposing EMF which affects the rate of change of the current. Consequently, the inductor restricts the rate of current changes in a circuit, delaying the ON-OFF sequences of the switch-mode power supply circuits. This allows the electronic circuit to perform at a higher efficiency, while keeping the circuits safe and reliable.

In conclusion, the CMH322522-221KL fixed inductor is a versatile electronic component with a wide range of applications. The device offers excellent performance characteristics, including a wide operating temperature range, high self-resonant frequency, and high dielectric strength. This product is suitable for use in power electronic circuits, and can provide inductance in AC-DC, DC-DC, automotive, consumer electronics, and communications systems.

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