B72280B0321K001

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A transient voltage suppressor (TVS) is a device designed to protect sensitive electronics from damage due to voltage spikes or electrical overstress (EOS). Consisting of a silicon-based semiconductor, the technology has been used since the 1950s and is now one of the primary solutions for surge and overvoltage protection of modern power and data circuits. Of the numerous types of transient voltage suppressors, TVS varistors, also known as metal oxide varistors (MOVs), are among the most reliable and effective.

One of these is the B72280B0321K001 Varistor, a commercial-grade device designed with a 550V clamping voltage and 6.4A peak surge current. Manufactured by Gamma Electronics, it is a two-terminal, non-polarized device housed in a TO-220AB molded package and provides accurate overvoltage protection in commercial and industrial applications.

A varistor, by definition, is a voltage-dependent resistor whose resistance value varies depending on the voltage it is exposed to. When the voltage applied to this particular B72280B0321K001 Varistor exceeds its breakdown voltage, its resistance instantly decreases to a few ohms as electrons flow through it. This low resistance behavior or “clamping” action absorbs the incoming surge energy and diverts it away from the protected equipment and back to its source.

Due to its sturdy construction and high surge current capabilities, the B72280B0321K001 Varistor is suitable for various commercial and industrial applications including power supply lines, AC input/output circuits, and communication systems. Additionally, it is also commonly used when isolating and suppressing noise in DC output circuits and for overvoltage protection of individual components.

In order to operate at its rated power, the B72280B0321K001 Varistor must be connected to the desired remote location with its positive terminal connected to the protected equipment and its negative terminal connected to the source of power. This connection will direct any voltage spikes or EOS away from the protected equipment to the Varistor device which will then absorb it harmlessly, thus preventing damage.

The B72280B0321K001 Varistor is an effective device for protecting sensitive equipment from damaging voltage transients and other electrical stresses. Its robust construction is capable of withstanding transients up to 6.4A peak surge current while simultaneously dissipating any EOS, thereby ensuring reliable operation in commercial and industrial applications.

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