SP1210-104G

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Fixed inductors are electrical components widely used in various electrical circuits. They are built with either solenoid or toroidal winding with a highly permeable core and typically feature inductance values ranging from 1µH to 10mH.

SP1210-104G is a fixed inductor from the SP1210 series by American manufacturer EPCOS. This SMT (Surface Mount Technology) component is designed for automated insertion, offering reliability, enhanced performance, space savings and a wide temperature range.

This fixed inductor is moulded in yellow epoxy. SP1210-104G has an inductance of 10.4µH ±20%, a current rating of 350mA and a saturation current of 0.4A. Its temperature range is -40°C~+85°C.

SP1210-104G is used in a variety of applications including power supplies, portable communication devices, personal computers, AC and DC motor drivers and digital products. It is also used in harmonic filters, DC-DC converters, mobile phone chargers and electronic ballast.

The working principle of a fixed inductor is based on electromagnetic induction. When a conductor is placed in a varying magnetic field, a voltage (back-voltage) is generated due to the Faraday\'s law of induction. This voltage causes electric current to flow in the conductor. This electric current induces a secondary magnetic field which opposes the original magnetic field. As a result, the current rising rate slows down and increases the inductance.

Most fixed inductors consist of conductive wire wound around a ferromagnetic or air core, depending on the application. The core material provides the inductor with an increased magnetic flux, thus increasing the inductance and providing a greater level of saturation resistance. Both the core material and the number of windings used can be changed to provide a different inductance.

The value of the inductance of the fixed inductor is determined by the size of the core, the number of turns of the winding and the relative permeability of the core material. The higher the permeability, the lower the inductance. The inductance also changes with the current flowing through the inductor. This is known as the local effect, in which the driven current induces an additional magnetic flux that increases (or decreases) the inductance.

SP1210-104G is a versatile fixed inductor ideal for induction applications. It offers stability and accuracy at high frequencies and reduces the risk of short circuits. It is an affordable and reliable choice for a wide range of applications.

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