SRN8040-3R3Y Inductors, Coils, Chokes

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Fixed inductors are among the oldest electrical components, featuring components that are wound on magnetic cores or wound on air and fixed by a housing. With the development of technology, various types of fixed inductors have appeared in the market, such as SRN8040-3R3Y. This article will introduce the application fields and working principle of SRN8040-3R3Y.

SRN8040-3R3Y is a small surface-mount fixed inductor with an inductance range of 1.6 uH to 1.8 uH. It has a maximum standing current of 12 A and a near-ideal Q factor from 0.018 to 0.045, depending on inductance/frequency. The temperature range is from -40℃ to 85℃. It is most often used in automotive, switching power supply, and mobile device applications. Compared to iron-core inductors, SRN8040-3R3Y can be more space-saving and energy-saving, making it an ideal choice for various designs.

SRN8040-3R3Y is designed in a continued spiral coil shape, with insulation and coil wires between the core. The fixed inductor works according to the principles of inductance: if a current passes through the wire coils, then the coils generate a magnetic field. When the current changes, the changing magnetic flux cuts through the wire loop and induces a voltage in the opposing direction. The larger the inductance, the more voltage is generated when the current passes, and the more energy is stored. The energy generated due to the on-off switching of the current is proportional to the inductance, so the higher the inductance, the higher the energy.

In addition to energy storage, the SRN8040-3R3Y also performs other functions. Its ability to limit the amount of current means that it can be used to protect circuits, such as power supplies, from excessive current. It also helps to reduce electromagnetic interference (EMI) by suppressing any high-frequency noise signals traveling through the circuit. It can also be used as a voltage step-down or a buffer to reduce unwanted voltage shifts in the circuit.

Overall, SRN8040-3R3Y is a very versatile, cost-effective, and energy efficient component that is widely used in various automotive, switching power supply, and mobile device applications. The inductor plays a very important role in the circuits, help to protect them from overloads and reduce EMI. Therefore, the SRN8040-3R3Y is an essential component for any electrical system.

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