B82799C105N1

Series:	B82799
Part Status:	Obsolete

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Common Mode Chokes

Common mode chokes, or CMCs, are passive electrical components designed to attenuate common mode noise in the transmission lines of high frequency, power, or balanced signal circuits. They are often referred to as differential-mode chokes because they act as an impedance which rejects the common-mode noise but passes only the desired differential-mode signal components. The B82799C105N1 is one of many common mode chokes manufactured by Murata Power Solutions, and is designed specifically for power control circuit applications.

Working Principle

Common mode chokes operate on the principle of differential-mode inductive coupling. An alternating current is supplied to the choke assembly, typically between two lines where a switch or load is located. With the current alternately driven in opposite directions, the magnetic field of the induced current splits, creating two equal in magnitude yet oppositely directed fields. These fields create an electromagnetic torque which resists the flow of current, essentially blocking the flow of common-mode noise.

Application Field

Due to its small size and ability to eliminate common mode noise, the B82799C105N1 is suitable for use in power control circuit applications. It can be used to filter out unwanted noise and electromagnetic interference in applications such as automotive, industrial, consumer electronics, and IoT devices. It is also ideal for communications, lighting, and other high-frequency applications, as its operating frequency range starts at 10 kHz and extends up to 1 GHz. The B82799C105N1 is also suitable for use in medical and automotive safety systems, as its power dissipation gradient range is 0.08 to 0.12 W/°C.

Rugged Design

The B82799C105N1 is designed to meet the most demanding mechanical and electrical requirements, with a small size of 3.4 x 2.7 mm and rated current of 3.6 A. It also features a wide operating temperature range of -40 to +105°C, making it suitable for use in both indoor and outdoor environments. Moreover, this common mode choke is built to withstand vibrations and shocks, with a rated vibration of 20 g and shock of 100 g. Its high reliability is also demonstrated by its mean time between failure (MTBF) rating of 1 million hours.

Conclusion

The B82799C105N1 is a common mode choke designed for power control circuit applications. It operates on the principle of differential-mode inductive coupling, blocking the flow of common-mode noise while allowing for the passage of desired differential-mode signal components. The B82799C105N1 is suitable for a range of applications, including communications, lighting, consumer electronics, medical safety systems, and automotive applications. It is also rugged and reliable, with a wide temperature range and a high MTBF rating.

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