BZG04-27TR3

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A transient voltage suppressor (TVS) diode is a component designed to protect sensitive electronics from a voltage surge. The BZG04-27TR3 TVS diode is a unidirectional device featuring an extended Stand-Off Voltage (Vbr) of 24V. It has an exceptionally low leakage current of 4 nA (at 24V) and a fast reaction time of less than 20ns, making it ideal for protecting voltage sensitive components against static discharges, ESD and EFT transients.

Application Field

The BZG04-27TR3 is designed to protect against surges in automotive, industrial, telecoms, and consumer applications. Commonly in automotive applications, they are used to protect voltage sensitive components such as clock ICs, power switching ICs and audio amplifiers from EMI/RFI, ESD and EFT transients. In industrial applications, they are used to protect sensitive components from excessive voltage and current of ERP (Electronic Radiation Power) surges. In telecommunications, they are used to protect modem and control circuitry from ESD, EFT and EMI transients. And in consumer applications, they are used to protect circuit boards, and peripheral components such as portable devices from high energy transients.

Working Principle

The working principle of a TVS diode is simple. It is a semiconductor device that has two terminals, with one connected to ground and the other to the voltage source, usually coming from the application. When the voltage spike occurs, it quickly conducts the current away from the circuit, providing protection for sensitive components. The reverse breakdown voltage (Vbr) of the diode determines the voltage at which it begins to conduct current.

The BZG04-27TR3 diode features an extended Vbr of 24V and fast reaction time of less than 20ns. When a transient voltage arises, the diode quickly conducts current, bringing it down to the specified level determined ahead of time. In addition, the device has an unidirectional design, meaning that it only works when the voltage is applied in one direction, providing protection to one side of a component that is susceptible to transient voltages.

Conclusion

The BZG04-27TR3 TVS diode is an ideal component for protecting circuits from voltage surges. With its large Vbr of 24V and fast reaction time of less than 20ns, it effectively protects against ESD, EFT and EMI transients. Its unidirectional design also provides protection for one-side of a susceptible component. This makes it a great choice for protecting voltage sensitive components in automotive, industrial, telecoms and consumer applications.

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