SRU2009-1R0Y

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Fixed inductors, commonly known as choke coils, are electrical components that store or transfer energy in the form of inductance. A choke coil is essentially a coil of wire that has a prescribed inductance. The SRU2009-1R0Y is a type of high-current fixed inductor specifically produced by ROHM Semiconductor. This component is used in topologies for digital power supplies, essentially providing an effective filter in the conversion of higher alternating voltages. Additionally, the SRU2009-1R0Y offers a highly reliable design with low saturation current and increased ripple current for certain applications.

The SRU2009-1R0Y is designed with a ferrite core, which is a type of magnetic iron oxide that is commonly used for inductance applications. This design is favored because it allows for relatively high inductance values while still maintained a relatively small size. Additionally, ferrite cores are characterized by their nonlinearity, meaning that the inductance values are subject to change as the core material saturates. As such, the SRU2009-1R0Y is typically used for applications involving high-DC voltages and high-frequency AC voltages.

The SRU2009-1R0Y working principle can be described in three parts: current-flow, magnetic-fieldbuilding, and current-gain. First, current flow through the choke coil creates a magnetic field which is proportional to the ampere-turns. This magnetic field provides a store of energy for a period of time, and can be used to provide a continuous voltage-opposing impedance for the AC source. Second, as the current in the choke coil changes, the magnetic field is built and stored. This property is referred to as inductance. Finally, the stored magnetic field is then used to establish a “gain” in energy, which then converts the applied AC voltage into a DC output. The output of the SRU2009-1R0Y is an ideal sinusoidal field shape.

Generally, the SRU2009-1R0Y is ideal for digital power supply applications involving DC/AC and AC/DC conversion, as well as voltage conversion in low to medium voltage applications. It is characterized by a wide working-temperature range (−40°C to +105°C), allowing it to be suitable for a variety of operation environments. The SRU2009-1R0Y also has a wide range of inductance values, from 8uH to 680uH, allowing for the filtering of various frequencies. Additionally, the inductor offers a good ripple current capability up to 16A.

In summary, the SRU2009-1R0Y is a high-current fixed inductor specifically designed for digital power supply applications. It is characterized by a wide temperature range and a wide range of inductance levels. It works according to the principle of current-flow, magnetic-fieldbuilding, and current-gain, and is capable of providing effective filtering for AC voltages. This makes the SRU2009-1R0Y ideal for digital power supply applications, as well as low to medium voltage voltage conversion.

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