B72660M0950K072 Circuit Protection

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TVS diodes, also known as transient voltage suppressors, are a class of nonlinear semiconductor devices used for protection against voltage transients. Varistors, MOVs (metal oxide varistors), and gas discharge tubes are all forms of transient voltage suppression devices, and the B72660M0950K072 is an example of a metal oxide varistor. Varistors are designed to protect sensitive circuitry from overvoltage transients or inductive kickbacks that could damage the circuit, and the B72660M0950K072 is effective at doing so.

A metal oxide varistor can be thought of as a voltage dependent, nonlinear, polar capacitor. The two terminals of metal oxide varistors are separated by a ceramic disk that contains metal oxide grains with a low dielectric constant. This layer of grains determines the performance of the varistor including its capacitance, leakage current, voltage coefficient of capacitance, and breakdown voltage. The B72660M0950K072 device specifically is a surface mount chip varistor with a voltage rating of 72 V.

The working principle of a metal oxide varistor is simple - when a voltage is applied to the varistor, a depletion region is formed in the varistor. The size of the depletion region is determined by the applied voltage and the varistor’s characteristics. If the applied voltage is below the varistor’s breakdown voltage, the depletion region remains very small and the current passing through the device is minimal. As the applied voltage is increased, the depletion region increases and the current passing through the device proportionately increases. When the applied voltage exceeds the breakdown voltage, avalanche breakdown occurs and the device begins to conduct larger currents. The volt-ampere characteristics of metal oxide varistors are highly nonlinear and, as a result, the device has the ability to divert high currents away from the circuitry, thus protecting the circuit.

The B72660M0950K072 device is suitable for installation in many electronic systems such as computers, consumer audio-visual equipment, industrial equipment, aircraft avionics systems and automotive engine control systems. The device can be used to protect systems from the transients associated with switching power supplies, lightning discharges, motor control circuits, short circuits and electrostatic discharge. The device is designed to withstand an overload voltage of at least 72 V and can easily divert the energy released in the form of a high-current spike without damage.

In summary, the B72660M0950K072 is a metal oxide varistor that is used to protect sensitive electronic systems from overvoltage transient events such as lightning discharges, short circuits and motor control circuits. The device operates by diverting the high-current spike away from the system, thus protecting the circuit from damage. The device is highly effective in its intended application field and is suitable for use in many electronic systems.

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