SC104-221

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Fixed inductors play an important role in modern circuits, ranging from power supply re-regulation, EMI suppression, RF signal couplings, to load modulation. The SC104-221 is a type of fixed inductor which can be used for all of the above applications. It is available in various packages, including small outline package (SOP), dual in line package (DIP) and surface mount technology (SMT) package.

The SC104-221 has a rated inductance of 22 μH. It is a high-efficient and low-loss wirewound inductor, with alloy core material and a laminated ferrite winding. This combination allows the SC104-221 to provide a very low DC resistance (DCR, only 0.04 Ohms) and a maximum DC current level of 5.3 Amps. It also features an operating temperature range of -40 to +105 °C, with a temperature coefficient of 20ppm/°C, making it suitable for both industrial and commercial applications.

The working principle of the SC104-221 is based on the concept of induced current. When a fluctuating current flows through the inductor, an electromotive force (EMF) is induced in the winding, causing a counter current in the coil. This counter current adds to the initial current, creating a new current in the inductor known as “induced current”, which in turn creates a magnetic field around the inductor. This magnetic field creates an inductance, which causes the current to be restricted by the inductor, and thus maintains the inductance value.

The SC104-221 is suited for both switching and linear power supply applications. It can replace two other common types of inductors (ADI and IBIS) used in these applications, with comparable or better quality performance. It is also used in EMC/EMI suppression applications, RF signal couplings, and load modulation circuits. It is widely used in power supplies, motor controllers, LED drivers, power amplifiers, telecom equipment, medical equipment, and others.

The SC104-221 is an excellent choice for those in need of a high-efficiency, low-loss fixed inductor. Its ultra-low DC resistance and high current capability make it suitable for a wide range of applications, from power supplies to telecom equipment. Its temperature coefficient also allows it to remain consistent over a wide temperature range, making it suitable for both industrial and commercial applications.

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