403R3C

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Fixed Inductors are used in a variety of applications across the power, RF and Oscillator disciplines, for things such as filter networks, resonances and chokes, whilst also being highly cost effective. One of the most common used devices within this field of application is the 403R3C fixed inductor which has been developed and designed for low frequency oscillations. This article will detail the application field and working principle of this critical component.

403R3C

The 403R3C is a radial based fixed inductor which has been designed for low frequency applications. It can handle up to 300mA at a maximum of 25V, or 150mA at 50V for higher power ratings. Measuring at 16.3mm (L) x 6.5mm(D), the device is highly efficient and operates over a temperature range of –30 to +85℃. The 403R3C contains ferrite cores with a self–supporting metal wire windings which are electrolytic copper cased with a 4µH resistance, allowing for a wide range of applications including:

• Power supplies
• Power management
• Inverters
• Switching regulators

Working Principle

The 403R3C inductor is based on the principle of inductance, and the law of inductance states that an inductor will resist any change in current, by inducing a voltage that is proportional to the rate of current change. The403R3C contains two windings which are connected in series with each other. When current is applied to one winding, the other winding is magnetized, producing a voltage which opposes the applied current.

The 403R3C uses this principle of inductance to help reduce electrical noise in circuits, and also to operate as filters. This can be seen in the inverter applications that use the 403R3C, as the inductor helps to reduce high frequency noise from the circuit and allows for better performance. In addition to this, the inductor can also be used to store energy, as current induced in the windings creates a magnetic field which stores energy in the form of a magnetic field.

Conclusion

The 403R3C is a highly efficient fixed inductor that has been designed for low frequency applications. It has the ability to store energy, reduce electrical noise and operate as a filter in power management, inverter and switching regulator applications. It is based on the law of inductance, and contains two windings which are magnetized when current is applied in order to produce a voltage which opposes the applied current.

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