PM0805G-4R7J

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Fixed Inductors are a form of inductor, a passive electrical component which stores energy in a magnetic field, when current passes through it. The PM0805G-4R7J is a variant on the fixed inductor theme, designed to hold a steady inductance with minimal electrical losses. In this article, we explain the application fields of this product, and its working principle to help you decide whether it meets your needs.

Application Field

The PM0805G-4R7J offers a number of applications, including Wideband Computing (WBC) and networking, together with clock signal conditioning in telecommunications and computer related products. Due to its high frequency response capacity, it is especially suitable for output signals requiring stabilisation when high-speed A/D or D/A conversions are used. Its low noise and high symmetry characteristics make it the ideal choice when signals need to be equalised. It is also recommended for low-voltage DC-DC converters.

Working Principle

The PM0805G-4R7J consists of a small coil of wire around a magnetically permeable core, stored in an aluminium or steel casing. Its inductance value is determined by the size of the coil and the permeability of the core. When current is applied, the coil acts as an inductor, generating a magnetic field and storing energy in it. The inductance of the component is therefore determined by its geometry. The PM0805G-4R7J is designed to maintain its inductance even as the current varies, minimising electrical losses.

The PM0805G-4R7J has a low electrical resistance, which means it can transfer signals of higher amplitude and frequency without excessive losses. Its core has a high mu-metal permeability factor, resulting in a high inductance - frequency ratio, allowing for stable signal transmissions over a wide range of frequencies. As the product has a low Q-factor, it is able to transfer signals of lower frequencies efficiently.

The PM0805G-4R7J is designed to minimise impedance or transmission losses, allowing for secure transmission of digital signals. It is highly effective at reducing noise, and also offers high thermal stability, ensuring stability of inductance value over a wide temperature range. Due to its small size, the PM0805G-4R7J is able to fit into tight spaces, which makes it particularly suitable for clock signal conditioning and WBC.

Conclusion

The PM0805G-4R7J is a high-performance fixed inductor, offering a range of applications, including clock signal conditioning, Wideband Computing, and low-voltage DC conversion. Its core design offers high mu-metal permeability and low electrical resistance, resulting in high inductance - frequency ratio and minimal electrical losses. Its small size and thermal stability make it suitable for use in tight spaces and a wide range of temperatures.

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