B72207S0421K311 Circuit Protection

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TVS - Varistors, MOVs

The B72207S0421K311 is a bidirectional surface-mount transient voltage suppressor (TVS). It is a small, symmetrical bipolar component capable of suppressing breakdown voltages up to 270V. It is designed to protect against overvoltage transients and electrical noise and provide system level protection for sensitive equipment.

The B72207S0421K311 belongs to the family of varistors, also known as voltage dependent resistors (VDRs). This type of component is designed to protect against high voltage levels by diverting excess current away from critical components and circuits. The primary function of the B72207S0421K311 is to suppress voltage spiking and to prevent damage from electrical surges and power line disturbances.

The device is made up of two symmetrical zeners connected in parallel between a common anode and a gate terminal. It works by controlling the flow of current between the anode and gate terminals in response to an over-voltage condition. When the voltage exceeds the devices clamp voltage the current will be diverted away from the load. This ensures that the voltage across the load remains within the desired level.

The B72207S0421K311 is primarily used in applications where transient voltage suppression is necessary. This includes computer and cell phone charging systems, audio/video and security systems, automotive control systems, and various other consumer and industrial applications. The device is capable of handling power surges of up to 10A with a response time of less than 1ns.

The B72207S0421K311 is an effective, low cost solution for protecting sensitive components and systems from voltage transients. Its symmetrical design ensures reliable functioning and its small surface mount package enables it to be used in a wide range of applications. The device may be used for both ESD and EFT protection and is UL certified.

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