SCRH4D18-220

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Fixed inductors are electrical components that are non-moveable and have two terminals that complete the electrical circuit. SCRH4D18-220 is a popular fixed inductor from Coilcraft. It is an ideal choice for a wide range of applications including power conversion, power line filtering, output filtering, and power factor correction, among many others.

SCRH4D18-220 Application Field

The SCRH4D18-220 is a great choice for applications with high current power supplies and applications with linear and switch-mode power supplies. It can also be used in DC-DC converters, where a high quality inductor is required. The inductor can also be implemented in noise filtering applications such as line-level filtering and FM filtering. Since it is an open core construction inductor, it is well-suited for applications that require minimal magnetic field leakage.

Additional applications that the SCRH4D18-220 excels in include telecom base station/networking power supplies, HVAC systems, copier/printer power supplies, and other power and RF applications. The SCRH4D18-220 is designed to operate in semiconductor test equipment, and can also be used in server power supplies or even medical electronic equipment.

SCRH4D18-220 Working Principle

The SCRH4D18-220 fixed inductor follows a simple working principle. It is essentially a coil that has a copper or aluminum core around which wire is wound in multiple turns. When a current passes through the winding, it induces a magnetic field in the core. This magnetic field, in turn, stores energy in the inductor in the form of a magnetic field.

The current passing through the winding also creates a voltage drop across the terminals of the inductor due to inductance. Thus, when an AC voltage is applied across the winding, an AC magnetic field is generated in the core, resulting in the current alternating during each cycle. When the current passes through the induction coil, it is also opposed by the inductance creating a voltage drop that causes a decrease in the current level to a certain minimum value.

The inductance of the SCRH4D18-220 is especially suitable for applications with currents up to 15A or more which require minimal magnetic field leakage. It has a winding resistance of 0.24 Ohm and a self-resonant frequency of 450 kHz. The Qvalue is usually around 7.50 at 10 kHz.

Additionally, SCRH4D18-220 is designed to operate in a temperature range of -25°C to +85°C. It has an insulation voltage of 500Vrms and a saturation current of 16A.

Conclusion

SCRH4D18-220 is a great choice for a wide range of applications with high current power supplies. It follows a simple working principle and excels in many power and RF applications. It is also an open core construction inductor that has a winding resistance of 0.24 Ohm and a self-resonant frequency of 450 kHz. With a temperature range of -25°C to +85°C, it is suitable for a wide range of operations.

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