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Fixed Inductors

Fixed Inductors are electronic components that, when subjected to an electric current, produce a magnetic field. They are used in a variety of applications where stability and reliability of performance are essential, such as in telecommunications, power supplies, audio equipment, and instrumentation. Fixed Inductors have a variety of shapes and sizes, and their configurations range from the simplest coil to a combination of coils and ferrite cores.

0805-101J Application Field and Working Principle

The 0805-101J fixed inductor is a miniature signal-level, PCB-mounting, ceramic-cased inductor. Specifically designed for use in pulse or timing circuits, the 0805-101J has a quite low DC resistance, enabling it to effectively transfer the requisite charge or current. As such, it is most commonly used in power supply units, buck-mode DC/DC converters, and other telecommunications equipment.

In terms of working principle, the 0805-101J works by converting electrical energy into a magnetic field and back again. Current passing through the inductor produces a magnetic field around the conductor. As the current varies, this field varies accordingly – increasing and declining in power – and this in turn produces a proportionately varying voltage at the inductor’s terminals. When used in conjunction with capacitors, the inductor helps to convert an AC waveform into a DC voltage.

The 0805-101J’s construction consists of two toroidally-wound coils of enamelled copper wire which are each potted inside a miniaturised ceramic housing. This presents several advantages over conventional inductors, such as superior performance characteristics, reduced noise, and improved compatibility with other electronics. The inductor also features an operating temperature range of -40°C to +125°C and a wide range of current and voltage ratings.

At the electrical level, the 0805-101J inductor has a peak DC current rating of 1.0A, a saturation current of 1.2A, an inductance range from 2.2µH to 10µH, and a Q-Factor of 30min @ 7.3MHz. This makes it suitable for use in a variety of different electronic circuits, particularly for high-speed applications.

Conclusion

The 0805-101J fixed inductor is a versatile and reliable component for use in a wide range of electronics applications. Its highly-stable performance characteristics and small size make it a popular choice for telecoms, instrumentation, audio equipment, and power supplies. Moreover, its superior performance-to-size ratio makes it a perfect choice for high-speed and/or microwave applications.

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