LDS0705-1R5M-R

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Fixed inductors, also known as "fixed chokes" or simply "chokes," are devices that store energy in the form of a magnetic field when electrical current flows through the coil. LDS0705-1R5M-R is an inductor from a series of SMD wire wound inductors manufactured by Calchip Electronics, designed for use in general-purpose switching power supplies.

Application Field

The LDS0705-1R5M-R is primarily intended for use in consumer applications such as AC/DC converters, DC/DC, and other switching power supply circuits. In addition, this inductor is designed to be used where exceptional high-frequency performance is required. Its winding construction can handle higher frequency operation than many other inductors, making it excellent for use in power supplies where there is a need for high-frequency operation and high power efficiency.

The LDS0705-1R5M-R is specified to operate over a wide temperature range of -40°C to +105°C and to have a high tolerance for transient and surge currents over a wide input voltage range. It is additionally designed for low noise and has excellent cycle-by-cycle current handling capabilities. These features make it ideal for applications such as power management in the consumer electronics industry.

Working Principle

An inductor is an electrical component made of a coil of insulated wire turns. As current flows through the coil, a magnetic field is generated. This magnetic field is constantly changing, creating a voltage in the coil. This voltage is in the opposite direction of the flow of current, imposing a resistance to the flow of the current, known as inductive reactance. This effect is often used to limit current flow in circuits.

The LDS0705-1R5M-R features an inductance of 1.5 µH and a rated current of 10 A. The inductance of the LDS0705-1R5M-R is achieved by winding very thin wire around a ferrite core. The core material is chosen to provide both a low core loss and high saturation point, both of which contribute to the inductor’s high frequency performance.

The core is wound with wire to create an inductor. The more turns of wire that are wound around the core, the higher the inductance of the component. This is why the LDS0705-1R5M-R has an inductance of 1.5 µH even though it is composed of a relatively small ferrite core.

The wire is chosen to provide the low resistance needed to achieve the high-current ratings that the inductor is specified for. Each turn of the wire is separated by an insulating material to create a barrier between the turns. This insulation helps to prevent the adjacent turns’ electromagnetic fields from interacting, which is important for controlling the inductor’s performance.

The current rating for the inductor is determined by the maximum current that the wire can handle before melting. The rated current of the LDS0705-1R5M-R is 10 A. It can handle peak currents of 15 A for brief periods of time, allowing for higher power efficiency in transient applications.

The inductance of the LDS0705-1R5M-R can be adjusted by either increasing or decreasing the number of turns in the coil. Additionally, by changing the size and material of the core, the inductance can also be altered. This is why the LDS0705-1R5M-R is an ideal solution for applications when high-frequency performance and power efficiency are required.

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