S4924R-472J

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Fixed inductors are electronic components that offer inductance, a property of an electric circuit that opposes changes in electric current. Commonly known as coils or chokes, fixed inductors are widely applied in power supplies, switching circuits, signal processing circuits, and more. The S4924R-472J is a fixed inductor that is designed for use in switching power supplies and telecommunications applications.

The S4924R-472J is a two-terminal, surface-mount inductor that provides a high inductance with low parasitic capacitance. Its successful incorporation with typical switching power supplies and telecom applications allows a superior performance with respect to power dissipation, efficiency and noise control. With its low profile and small size, this type of fixed inductor can be easily integrated inside electronic systems.

The S4924R-472J inductor is made of ultra-small ferrite cores and multilayer ceramic chip capacitors with sub-pF-level parasitic capacitance, which results in an equivalent circuit and several performance values, as described in the expression:

L = 2*π f(1/Q -1/Q²)^-1/2, Q = 1/2π fCR, K_s = 1/(CR(Q-1))²

The features of the S4924R-472J are a usual Type B inductance of 0.47μH±10%, parasitic capacitance of 0.45pF to 0.9pF, and a rated current of 500mA. Its external dimensions are only 2.0 cm x 1.6 cm x 1.5 mm, making the S4924R-472J perfect for tight spaces. The temperature range of this type of fixed inductor is either -40°C to +125°C, allowing its exposure to diverse environments.

The applications of this fixed inductor include switching power supplies, such as dc-dc converters, television power supplies, and motor drivers. Additionally, they are well-suited for cell phones, digital cameras, and professional audio systems, among other applications where EMC (electromagnetic compatibility) is important. Other uses includes digital clock, wave-filter circuits, switching regulators, and specialty inverters.

The working principle behind the S4924R-472J fixed inductor is based on the principle of induction. An alternating current flowing through a coil creates a rotating magnetic field, and this field induces voltage in any nearby coil. As the current, and consequently the magnetic field, varies in intensity, the induced voltage will also vary. The frequency of the alternating current will determine the number of changes in intensity per second, and so the frequency of the induced alternating voltage.

The S4924R-472J fixed inductor is a well-rounded component with superior energy efficiency, noise control and low profile, which makes it suitable for tight spaces. Its ability to offer high inductance with low parasitic capacitance is what makes it the ideal choice for many applications, such as power supplies, switching circuits, signal processing circuits, and more.

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