MDMK2020T1R0MM Inductors, Coils, Chokes

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Fixed inductors are a type of electrical components that store energy in the form of a magnetic field. The main purpose of these components is to reduce interference from electric signals and decrease voltage variations. In general, fixed inductors are passive devices often used in electronic circuits, as part of oscillator filters, power supplies, communication circuits and other applications. The MDMK2020T1R0MM is an example of a fixed inductor from the Murata Electronics Corporation.

The MDMK2020T1R0MM fixed inductor is a surface-mount fixed inductor designed for use in cell phones, portable computers, and other portable electronic devices. It is a miniature device with a size of only 0.32mm x 0.25mm. The fixed inductor features a low profile height of 0.25mm and a maximum shielded rectangular winding for low profile mounting. The MDMK2020T1R0MM is designed with a coil impedance of 70.47 ohms at 1MHz and is rated to operate at a voltage of 2V with a current of 325 mA. The inductance of the device is 22nH at 100kHz.

The MDMK2020T1R0MM fixed inductor has a wide range of application fields due to its size and performance capabilities. It is designed for applications that require stable electrical signals with supply voltage ripple or noise rejection, such as power line filtering, radio frequency (RF) circuit applications, and noise rejection in audio-video circuits. In addition, it is suitable for stabilizing the power supply voltage in digital circuits and providing additional inductance in power supply filter networks.

The working principle of a fixed inductor is based on the fact that an electromagnetic field is generated when a current is passed through a coiled conductor. The resulting magnetic field forms a self-supporting loop, which induces an opposing voltage when any external current is applied across the conductor. This opposition, known as inductance, creates a condition wherein the current flow in the circuit is restricted.

The fixed inductor works on the principle of mutual inductance, where the induced current is generated by the mutual inductive coupling between two coils due to the relative movement of the magnetic field associated with both coils. In the MDMK2020T1R0MM fixed inductor, the two coils are separated by a special dielectric material that provides an electrical insulation mechanism between the two coils, allowing the induction of the current. When the current is induced, the induced voltage will oppose the supply voltage, resulting in a reduction of voltage across the inductor.

In summary, the MDMK2020T1R0MM fixed inductor is a miniature surface-mount device designed for use in cell phones, portable computers, and other portable electronic devices. It has a wide range of application fields due to its size and performance capabilities, such as noise rejection and power line filtering. The working principle of this fixed inductor is based on the principle of mutual inductance, where an induced current is generated by the mutual inductive coupling between two coils.

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