V271HF34

The V271HF34 is a TVS (Transient Voltage Suppression) Varistor, also known as Neural Network Varistor (MOV), commonly used in the protection of electronic circuits.
V271HF34 is mainly used in AC/DC switching power supply, DC input power line, car DVD/TV, LED adjustable drive, lighting, automotive electronics, communications, computer peripheral and other high-end products.
The working principle of V271HF34 is to protect the electronic circuit from the transient surge caused by electrostatic or electromagnetic. When the voltage exceeds the breakdown voltage of the varistor, its Impedance will become very small, and the current will flow through the varistor, which can make the circuit avoid the influence of the surge. The internal resistance of the varistor can reduce the peak current that can be tolerated to the safe current range, and can suppress the large current from the outside to protect the important components in the circuit.

The V271HF34 is made of high temperature bath firing zinc oxide powder sintered varistor. It has low leakage current, high clamping voltage, good anti-surge capacity, wide frequency band response, low residual voltage after surge response, and very small reverse current when subjected to surge, and can effectively reduce the loss of the varistor itself and the circuit connected to it.
The characteristic features of V271HF34 include working voltage range of 275V and response time of less than 1 Nano seconds. The surge handling capability of V271HF34 is 2.5kA (8/20 μs), and 2.1kA (10/1000 μs). The rated current range is from 22A to 15A. The extreme operating temperature range of V271HF34 should be -55 to 125 degree Celsius.
In addition, the V271HF34 is RoHS and halogen-free compliant. It comes with a single terminal, and its operating ambient humidity should be between 55% and 95%. Its capacitance ranges from 18pF to 250pF, and its insulation resistance is more than 1000MΩ.

In conclusion, the V271HF34 is an effective protection device for electronic circuits, which can effectively prevent transient surges by its special working principle. High temperature baking zinc oxide sintered varistor can reduce the reverse current and residual voltage, and can effectively reduce the internal resistance and the passing current. The V271HF34 meets RoHS and halogen-free requirements, and can work effectively and stably in the environment of-55 ~ 125°C.