VE1812K801R017

TVS - Varistors, MOVs

VE1812K801R017 is a reliable, surge absorber designed to protect low-voltage, low-power circuits such as electronic devices, telecommunication systems, and automotive power systems from voltage transients created by lightning, electrostatic discharge, and sensitive electronic components. Basically, it is a two-terminal, non-linear, energy-absorbing device, with electrical characteristics corresponding to those of a metal-oxide varistor (MOV).

Application Field

VE1812K801R017 is typically used in phones, tablets, mobile memory cards, and power supplies. It can be inserted in between main power supply to provide surge protection for sensitive components and circuits. In automotive applications, it is used mostly in lighting control systems, and engine and transmission control systems. It is also suitable for use in consumer electronics, data communication, electrical systems, and industrial equipment.

Working Principle

The working principle of VE1812K801R017 is based on the principle of metal-oxide-semiconductor structures (MOS) used in integrated circuits (ICs). The device is made of a metal oxide material capable of absorbing large amounts of electrical energy from a voltage transient. This energy is dissipated as heat before it is released into the surrounding environment. To ensure proper energy dissipation, the device must be mounted on a heat conducting surface. This ensures that it remains cool and operates reliably.

VE1812K801R017 operates in the reverse-breakdown mode. When the voltage begins to exceed its tolerance level, the varistor begins to conduct current, thus clamping the voltage at a safe limit. The behavior of the device is strongly non-linear, with the current being proportional to the square of the voltage. This allows it to clamp the voltage during a voltage transient, reducing the amount of energy that can be passed on to the protected circuits.

VE1812K801R017 is also characterized by its high surge current absorption. This is the maximum amount of current the device can absorb without being destroyed. This feature is extremely important in protecting sensitive electronic components from overvoltages caused by lightning and other power surges. It helps reduce the risk of permanent damage to the critical components.

In applications where it is necessary to protect circuits from voltage transients, VE1812K801R017 is a reliable and effective choice. Its high-current absorption capabilities and nonlinear behavior make it suitable for use in a variety of applications. With proper installation and maintenance, it provides excellent protection from overvoltages.