VS-ST230S14P0

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Thyristors - SCRs

The VS-ST230S14P0 is a silicon controlled rectifier (SCR), or thyristor, specifically developed for use in high switching frequency applications. It is typically used as a power management component that can switch large currents with a small input signal.

Application Field

The VS-ST230S14P0 is ideally suited for use in server power supplies, DC-DC converters, warning systems, automotive systems, robotic controllers, lighting control systems, and medical equipment. This device can perform phase control, optimise the power rating of switchers, and improve the power factor of electrical power systems.

The thyristor is designed to be able to switch large currents with high isolation voltage, controlling power inrush current so that it can be used to improve system performance as well as reduce electricity bills.

It can be operated in temperatures from 40 degrees Celsius to +85 degrees Celsius. This device is suitable for ultra-high frequency applications up to 10MHz.

Working Principle

The VS-ST230S14P0 utilises the four-layer silicon controlled rectifier (SCR) structure in which three p-n diodes are connected in series. An external gate or trigger is needed to turn the SCR “ON” and allow current to flow from anode to cathode. This thyristor has a trigger current of 5mA. Applying this current to the gate-cathode voltage of 10V, the thyristor can switch up to 600V, 11A RMS.

The VS-ST230S14P0 is designed to be able to withstand high frequency (up to 10MHz) applications while also providing excellent fast switching capability.

The SCR works on the principle of a four-layer diode which acts as a variable resistor in the circuit. By applying a voltage to the gate terminal, the SCR can be switched “ON”, allowing current to flow from anode to cathode. The current is controlled by the gate voltage, and the SCR can be switched “OFF” by reversing the gate voltage.

The SCR has two main characteristics: the forward blocking voltage and the reverse leakage current. The forward blocking voltage is defined as the minimum voltage applied between the anode and the cathode of the thyristor to provide a certain current between the two terminals. The reverse leakage current is the current that flows when the anode to cathode voltage is reverse-biased.

The device also has an over-current protection feature that is designed to protect the device from over-current conditions. This is implemented by controlling and limiting the gate current when the thyristor is in the “ON” state.

Overall, the VS-ST230S14P0 is an ideal choice for a wide range of high frequency applications due to its fast switching and high blocking voltage capacity.

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