ROV14-751K-S

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TVS - Varistors, MOVs are surge protection devices designed to protect sensitive electronic equipment from dangerous voltage spikes. The ROV14-751K-S is a Thyristor Varistor, which is a bidirectional protective component with a built-in overvoltage detection and crowbar circuit. It is especially suited for use in AC and DC power supplies.

The ROV14-751K-S is designed to provide a low on-state resistance during normal operation and to rapidly switch off when an over-voltage occurs. The device is designed to be used in either AC or DC circuits, as it can withstand voltages up to 1475V. The varistor is also designed to provide protection against surges up to 40kA (8/20µs).

The ROV14-751K-S’s application field is mainly AC and DC power supplies, where its low on-state resistance and high over-voltage protection make it ideal for use. The device is also suitable for use in motor controllers, automotive systems, and other applications where high surges may cause damage to the connected components.

The working principle of the ROV14-751K-S is based on its MOV circuit, which contains a PN junction thyristor and capacitor. The MOV (metal oxide varistor) is connected in parallel with the PN junction, and the capacitor is connected between the MOV and the bias terminals. During normal operation, the MOV is in a non-conductive state, while the PN junction remains in an OFF state.

When an over-voltage occurs, the device’s PN junction and MOV both conduct. The capacitor connected between the PN junction and the bias terminals begins to discharge, allowing current to flow through the MOV. This current causes the MOV to switch to an ON state, allowing a large current to flow through it and absorb the surge energy. The flow of current through the MOV also causes the PN junction to become saturated and switch off.

The ROV14-751K-S is a highly effective surge protection device, as it is able to provide high surge absorption and a low on-state resistance. It is designed for use in both AC and DC systems, and is capable of withstanding voltages of up to 1475V and surges up to 40kA (8/20µs). It is ideal for use in AC and DC power supplies, as well as in automotive and motor controllers systems.

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