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Fixed Inductors

Inductors are passive two-terminal electrical components used in electronic circuit design that can store energy in the form of a magnetic field. Fixed inductors are rigidly constructed and cannot be adjusted mechanically. They are usually constructed from wound wire, however they can also be manufactured with tools such as etching printed circuit boards.

4494R-685 application field and working principle is a type of fixed inductor designed for surface mount technology (SMT) applications. The 4494R-685 was designed to provide high performance and enhanced protection against electrostatic discharge (ESD) events. It features a working frequency range of up to 250 MHz, which makes it ideal for filter applications focusing on noise reduction.

The 4494R-685 is a chip-type static inductor with a typical inductance value of 685 nH and a maximum DC resistance value of 0.06 ohms. The inductance value of the 4494R-685 is calculated using a simple formula: L = M x N^2, where M and N are the corresponding values for the inductance and number of turns of the winding. The number of turns is usually determined by the current capacity of the inductor and the size of the winding core. The winding core provides the necessary structural support and enables efficient electrostatic discharge (ESD) protection.

In terms of performance, the 4494R-685 works in a wide range of operating temperatures, ranging from -55°C to +150°C. This makes it suitable for use in harsh conditions. When in operation, the inductor produces a near-constant current with a small output noise, thus making it ideal for switching power supplies, audio circuitry, and DC-DC converter applications. Due to its low DC resistance, the 4494R-685 is also suitable for applications where voltage drop should be minimized or where space is too limited for a large inductor.

The 4494R-685 also has excellent EMI and EMC characteristics, making it ideal for use in radio-frequency noise applications such as in laptops and car navigation systems. Additionally, due to its design and construction, the 4494R-685 can also be used in extreme environments, such as in in ruggedized military systems.

When it comes to safety and reliability, the 4494R-685 surpasses other types of fixed inductors. Its built-in ESD-protection feature, together with its excellent Thermal Shock and Moisture Resistance ratings, provide excellent protection against potential damage due to electrostatic discharge events and moisture exposure. Additionally, the 4494R-685 also meets the most stringent international standards in terms of mechanical and electrical performance.

In summary, the 4494R-685 fixed inductor is a highly reliable and robust product that can be used in a variety of applications where noise-suppression and high-frequency currents are required. Furthermore, due to its high performance and ESD protection, the 4494R-685 is the ideal choice for applications in extreme environments.

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