V511HA32

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

TVS (Transient Voltage Suppressor) devices are used to protect circuitry from large voltage transients due to static electricity, flashover, or other electrical disturbances. Varistors (also known as Metal Oxide Varistors or “MOVs”) are one type of TVS device, and the V511HA32 is an example of such a component. This article will discuss the application field and working principle of this particular varistor.

The V511HA32 is an MOV designed for high power applications. It has a maximum peak pulse current of 60A, a rated working voltage of 32V, and a maximum clamping voltage of 55V. This makes it suitable for applications such as AC-DC switching power supplies, telecommunication electronics, and digital equipment.

The working principle of MOVs is based on the non-linear characteristics of a semiconductor junction. When a voltage beyond a certain level is applied to the MOV, current flows through its internal junction diode. This current is proportional to the applied voltage, and when the voltage reaches a threshold value, the current flow is greatly increased. This sudden increase in current puts a clamping action on the applied voltage, thus limiting it and providing an effective form of protection against overvoltage.

The voltage clamping mechanism of MOVs does depend on their energy absorbing capability, which is based on the series resistance of the MOV. The higher the current through the MOV, the more energy will be dissipated in the form of heat. In order to dissipate this energy, the MOV must be suitably heatsinked to minimize its temperature rise. This is particularly important for high power applications such as the V511HA32, as its maximum continuous working power of 15.3W must be considered.

In summary, the V511HA32 is a high power Metal Oxide Varistor designed for use in AC-DC switching power supplies, telecommunication electronics, and digital equipment. It is an MOV, which works by clamping the applied voltage in order to protect circuitry from overvoltage. Its performance relies on its ability to dissipate the energy it absorbs, hence it must be suitably heatsinked for effective and reliable protection.

The specific data is subject to PDF, and the above content is for reference