V150LA10APX1347

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TVSs – Varistors, MOVs are the devices to protect circuits from fast transients, surges and static voltages. They help to absorb instantaneous high energy during electrical circuit interruption. V150LA10APX1347 is a unidirectional TVS offering excellent protection to circuits from lightning, electrostatic discharge, inductive load switching and other electrical stress sources. It has no reverse breakdown voltage, low leakage current and high clamping voltage.

Application Field

V150LA10APX1347 is mainly used in consumer and industrial applications such as Automotive Control System, Automotive Lighting, Power Supply, Industrial Control System, Computer System, Home Appliances, Communication Networks, Printers, Video Cameras, etc. It is especially suitable for the high noise and/or high surge environment.

Working Principle

The V150LA10APX1347 works on the principle of avalanche breakdown, which is based on the fact that when the electric field in a region exceeds a critical value, the electrons gain sufficient kinetic energy to create more electron-hole pairs resulting in an avalanche breakdown. Thus a large current flows, depending upon the time to break down. The breakdown voltage, the time to break down, number of avalanche breakdowns and its relationship with current and electric field depend upon properties of materials used in the diode formation.

When a transient voltage occurs, the V150LA10APX1347 works like a third anode which is grounded by using a low impedance clamping circuit. This device has a very fast response time (less than 1 ns) which significantly reduces the clamping time. When the transient voltage exceeded the rated voltage (e.g. 150 V) it clamps the signal and prevents any further increase in voltage. As such, this TVS will not be damaged due to overvoltage.

When the incoming surge voltage is higher than the clamping voltage of the V150LA10APX1347, the surge flows through the clamping circuitry as it has a low impedance. This clamping voltage is maintained by the MOV. This voltage is stored in the reverse biasing of the device, which is primarily a transient voltage suppressor (TVS). If the voltage rises beyond the clamping voltage, it causes the diode bridge to turn into a low resistance path, causing a current to flow and limiting any further increase in voltage.

In summary, the V150LA10APX1347 provides protection against fast transients, surges and static voltages by limiting the overvoltage current with its fast response time and low impedance. It is mainly used in consumer and industrial applications for the protection of circuits against lightning, electrostatic discharge, inductive load switching and other electrical stress sources.

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