V381HB34

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The V381HB34 is a type of TVS (Transient Voltage Suppressor) varistor. Varistors such as this one are also sometimes referred to as MOVs (Metal-Oxide Varistors) or Surge absorbers. This type of component is used to protect circuits from damaging voltage spikes. It works by clamping the voltage across its terminals to a predetermined value, which is in this case 34V, during an overload condition.

The V381HB34 is a bidirectional varistor, meaning it can protect against spikes in either polarity. It is also encapsulated in a fire-resistant case that can withstand intense temperature and over voltage conditions. The device has a rated power dissipation of 1500 mW and an operating junction temperature range from -55°C to +110°C.

The V381HB34 is typically used in applications that require reliable protection from lightning and other transient voltage surges. It is especially suitable for AC line protection since it can absorb very large energy and works quickly to suppress overvoltages. Additionally, it can protect circuits from electric arcs, high voltage and current transients, and surges from the load.

The working principle of the V381HB34 is relatively straightforward. In normal conditions, the device’s two terminals (anode and cathode) are connected via the metal-oxide (MO) layer. When an overvoltage occurs, the MO layer is disrupted and electrons flow between the terminals, clamping the voltage between the two terminals to the rated value of 34V. This prevents further damage to the protected circuit.

The V381HB34 is an excellent choice for applications such as AC line protection, automotive electronics, and protection against electrostatic discharge. Its high voltage rating of 34V and 1500 mW power dissipation allows it to provide robust protection even against large voltage spikes. Plus, its wire-bond package ensures the device is robust and easy to install.

In summary, the V381HB34 is a type of TVS varistor typically used for protecting circuits from transient voltage and current spikes. It has a rated voltage of 34V and a power dissipation of 1500 mW, making it suitable for a wide variety of applications. Its working principle is based on the movement of electrons between the two terminals, which reduces the voltage across them in case of an overvoltage.

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