B72220U2321K501

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TVS - Varistors, MOVs:

Transient Voltage Suppression (TVS) diodes, also known as Varistors and Metal Oxide Varistors (MOVs), provide a versatile, durable and reliable solution for protecting circuits from transient over-voltage events such as electrical surges. The B72220U2321K501 is a TVS diode of the MOV type, designed to work as a successful protection solution for modern electronic systems.

Application field:

The B72220U2321K501 is designed to protect systems from transient over-voltage events such as electrostatic discharge, lightning strike and power line induced surges. It’s relatively low capacitance and low reverse current make it suitable for protection against electrical surges at very low and high frequencies. Furthermore, its fast response time makes it an ideal choice for applications needing high levels of protection from over-voltage transients.

Working principle:

TVS diodes are unidirectional semiconductor devices that operate by clamping the voltage excesses that occur on a system during transient over-voltage events. They act as a ‘speed-breaker’ for over-voltage current by providing a low-resistance path for current to flow away from the device or circuit.

The B72220U2321K501 has an electrolytic capacitance of 1.45 pF and the nonlinear resistance of its MOV-type diode operates between 11 and 52 Volts. This diode has a peak pulse current of 36 A and a minimum breakdown voltage of 15 V. In order to function effectively, the device should be placed as close as possible to the protected components in order to ensure maximum protection.

TVS diodes also provide protection from transient over-voltages without significantly affecting the normal operation of a circuit. This is because the resistance of the MOV remains high until the diode is subjected to excessive voltages or currents, which then trigger the diode to reduce the resistance and clamp the voltage excess.

In summary, the B72220U2321K501 MOV is specifically designed to provide protection against surge and ESD transients. It’s low capacitance and low reverse current, coupled with its fast response time, make it an ideal choice for modern electronic systems.

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