SC75B-220

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Fixed inductors are one of the most important basic components in electrical and electronic engineering. It is used to store energy in the form of a magnetic field generated by the passing of an electric current. Inductors can be used for impedance matching, filtering, voltage regulation, and coupling applications. The most important use of inductors is for smoothing, since they are capable of providing stable current to the circuit even when supply voltage is varying or reduced.

The SC75B-220 is a fixed inductor. It is made from ceramic-based inductor cores and has a winding inductance of 220 microhenrys. The low self-capacitance and low DCR (DC resistance) make it a good choice for use in high frequency switching and power conversion DC/DC converters. This inductor is also rated for operation in a temperature range of -40 to 125°C.

The core of the SC75B-220 is made up of two ferrous cored sections that hold an inductance roll. The winding is made up of an enameled copper wire. The connection between the ferrite and the winding is purely physical and does not involve flux linking. This makes the inductor tolerant to ambient temperature changes without introducing change in the inductance.

In order to know the working principle of the SC75B-220, it is necessary to understand the fundamentals of induction. When a current passes through the inductor, a magnetic field is generated in the core. This field stores energy and induces a voltage across the inductor. The values of the voltage, current, and the inductor can be determined from the equation, V=L*di/dt, where L is the inductance of the inductor, and di/dt is the rate of change of the current.

The magnetic field of the inductor can be used for electromagnetic coupling between two circuits. Coupling is the transfer of energy from one circuit to another without any direct physical connection. This principle is important to understand for the application of the SC75B-220 for filtering, impedance matching, and voltage regulation. In these applications, the current in the primary circuit influences the inductance of the inductor, thus controlling the current in the secondary circuit.

The SC75B-220 is most commonly used in power converters for DC/DC and AC/DC applications. As a result of its high frequency performance and attrition resistance, it can be used in applications where high currents are regulated or switched within a fast time frame. Other application fields include telecommunications, data processing, automation systems, consumer electronics, medical equipment, automotive, and in military/aerospace applications. This inductor is also becoming increasingly popular in bluetooth and ultra low-power RF applications.

In conclusion, the SC75B-220 is a popular and versatile fixed inductor. Its low self-capacitance and low DCR make it suitable for use in high frequency switching and power conversion applications. The inductor is fabricated from ceramic-based inductor cores and can be applied in multiple application fields such as telecommunications, data processing, consumer electronics, and medical equipment.

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