B72214S1170K152

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TVS - Varistors, MOVs

Transient Voltage Suppressors (TVS) are specific types of solid-state electrical devices used to protect electronics from voltage spikes and transients. The two main types of TVS devices are Varistors and Metal Oxide Varistors (MOVs). The B72214S1170K152 is a varistor with a response time of 10V/μs, maximum clamping voltage of 17V and surge current of 15A.

Application Field

The B72214S1170K152 varistor can be used in a wide variety of applications such as portable electronics, automotive electronics, industrial control and HVAC systems, as well as in board-level surge protection and ESD protection. The device is designed to provide protection against destructive overvoltages which occur due to a variety of sources such as lightning, power outages, and electrostatic discharge (ESD).

Working Principle

The B72214S1170K152 Varistor is a nonlinear resistor in which the resistance is not constant but depends on the applied voltage. The resistance of the varistor decreases as the voltage increases, and vice versa. This behavior is known as the Joule effect, wherein the current flow is minimized as the applied voltage changes. When the voltage across the varistor reaches its clamping voltage (Vclamp), the device becomes conductive and acts as a short circuit, allowing the excess current to be diverted away from the protected circuit. This prevents the voltage from increasing further and protects the protected circuit from damage.

Conclusion

The B72214S1170K152 is a transient voltage suppressor designed to protect electronics and other electronic devices from voltage spikes and transients. Its response time of 10V/μs and maximum clamping voltage of 17V make it ideal for a variety of applications, including portable electronics, automotive electronics, industrial control and HVAC systems. The device works by decreasing its resistance as the voltage increases, allowing excess current to be diverted away when the clamping voltage is reached.

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