V39MA2A

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The V39MA2A is a type of transient voltage suppression unit, part of the TVS (Transient Voltage Suppressor) family. It is designed for applications involving components that are sensitive to external electrical disturbances, such as lightning, electrostatic discharges, circuit faults and power sags. TVSs such as the V39MA2A are a robust and reliable method of protecting sensitive components from such disturbances and thereby extending their working life.

The design of this unit uses a combination of a varistor and MOV (Metal Oxide Varistor). A varistor is a voltage-dependent resistor used to protect circuits from overvoltage by limiting current flow. It consists of two metal plates separated by a ceramic material, which has a non-linear resistance-voltage relationship. Whenever a surge of current enters the circuit, the varistor will act to reduce the voltage to a safe level.

An MOV is a form of electric surge protector made up of a zinc oxide material sandwiched between two metal plates. The MOV acts as a thermal fuse, breaking the flow when the current exceeds a safe limit. This provides powerful protection against electrical surges and spikes, ensuring that all systems remain functional.

The combination of a varistor and MOV makes the V39MA2A an ideal choice for applications that require protection from transient voltage events, such as automotive electronics, home entertainment systems, audio-visual equipment, and computer systems.

The working principle behind this unit is quite simple. When an incoming surge of current enters a circuit, it first passes through the MOV. If the surge is of sufficient size, it will cause the MOV to break down, creating a short circuit that diverts the surge away from the sensitive components. On the other hand, if the surge is not large enough to cause a breakdown, the MOV allows it to pass through to the varistor.

The varistor then acts to limit the voltage to a safe level, and the surge passes on through to the protected components. This sequence of events occurs in a matter of milliseconds, enabling components to remain safe and functional even when faced with large voltage surges.

The V39MA2A is a highly reliable and robust way of protecting components from transient voltage events, and for this reason is an ideal choice for those looking for reliable transient voltage suppression. As well as offering strong protection against surges, it also has a long operating life, enabling it to provide reliable protection for many years to come.

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