SP1210R-822K

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Fixed inductors are passive electronic components composed of a coil of insulated wire wrapped around a core or magnetic material. The SP1210R-822K is a type of fixed inductor. It uses a toroidal computer-grade ferrite core, dual-bobbin construction, and insulated winding. The fixed inductor is most commonly used to provide a bias in RF amplifier circuits, along with being a critical component within a filter or tuned circuit.

The SP1210R-822K fixed inductor has an rated inductance of 0.82 μH ±25%. It has a low DCR rating of 0.036 Ohm max., and a self-resonance frequency of 70 MHz. The rated current is 600 mA, with a corresponding maximum current of 1.4 A. The maximum voltage rating is 3.8 VDC. As with most fixed inductors, from a mechanical point of view, it is equipped with epoxy sealed end-caps and a UL 94V-0 flame retardant casing. The operating temperature of the fixed inductor ranges from -55°C to +125°C, with a tolerance of ±5%.

In terms of the SP1210R-822K’s application field, the most common use for a fixed inductor is countermeasures against noise in an AC power circuit. It can also be used in other types of circuits such as radio transmissions, car radios, TV signal transmissions, and measurements. The SP1210R-822K can also be used for output disruption suppression in DC power supplies. In addition, the SP1210R-822K can be used as a filter device for low-pulse noise and high-frequency noise.

The working principle of a fixed inductor is based on the principle of electromagnetic induction. When an electrical current is flowing through the coil, a magnetic field is created. This magnetic field induces an opposing voltage which is caused by the changing flux in the magnetic material. The induced voltage is the same value as the applied voltage but is of opposite polarity. This is the fundamental process of the SP1210R-822K. The characteristics of the inductor depend on the construction and materials used in its manufacture.

In summary, the SP1210R-822K fixed inductor is a commonly found electronic component. It is mainly used for noise countermeasures in AC power circuits, as well as for output disruption suppression and noise filtration. The working principle behind the inductor is based on electromagnetic induction, and the characteristics depend on its material make-up and construction. With its UL 94V-0 flammability rating and wide temperature range, the SP1210R-822K inductor is reliable and safe for many applications.

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