ER1641-473KM

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Fixed inductors are one of the most common electromagnetic components that are widely used in electronic circuits. They usually consist of a coil of wire wrapped around a magnetic core. The ER1641-473KM is a type of fixed inductor made by Panasonic. It is especially well suited for use in automotive applications, power supply, audio equipment, and telecom & communication systems.

The ER1641-473KM is composed of an internal core and an external coil. The core is made from ferrite material and the coil is a strontium ferrite. The ferrite material acts to keep the electromagnetic field confined to the coil so that it has a consistent inductance. The core also acts to reduce the effects of external magnetic fields which can interfere with the inductor\'s performance.

The inductor has a parasitic capacitance, which is the amount of capacitance that occurs between its two terminals due to its physical construction. Due to its parasitic capacitance, this type of inductor is more prone to having effects from external electromagnetic fields. Furthermore, the inductor has an inductance tolerance of 5%.

The ER1641-473KM has a rated inductance of 4.7uH, a rated current of 21mA, and a saturation current of 42mA. Its operating temperature ranges from -55°C to 125°C and its storage temperature ranges from -40°C to 125°C. As a fixed inductor, the ER1641-475KM has a low ESR and a fair amount of power handling capability. It is also resistant to ambient conditions, such as dust and humidity, and can withstand vibrations and shocks.

The working principle behind the ER1641-475KM is the same as any other type of fixed inductor. When an alternating current passes through the winding of the inductor, a magnetic field is created. This magnetic field links with the inductor\'s core, creating an opposing electromagnetic field. This opposing field opposes any changes in the current flow, creating an induced electromotive force (EMF). This EMF is known as inductance and is measured in henries.

As mentioned, the ER1641-475KM is mainly suitable for automotive applications, power supplies, audio equipment, and telecom & communication systems. It is often used in automotive ignition coils, automotive alternators, voltage regulators, power supplies, radios, relay coils, and many other electronic applications. It is also often used in power supplies to filter out any interference and to ensure the correct operation of the circuit.

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