VI20150S-M3/4W

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VI20150S-M3/4W, a product produced by Vishay Semiconductor, is a single-phase ultra-fast silicon controlled rectifier (SCR). Single-phase ultra-fast SCRs are used to regulate electric power in an electronic circuit.

Advantages offered by the VI20150S-M3/4W include:

• Low forward voltage drop
• High forward conducting current
• High surge peak off-state voltage
• High on-state voltage capacity

The primary application field of the VI20150S-M3/4W is AC to DC conversion. It is used to regulate the output level of AC current, by allowing a controlled amount of electricity to pass through the circuit. This output can be used for for a multitude of applications, such as dimmer switches, line voltage regulators, and inverters.

In terms of functionality, the VI20150S-M3/4W has several components, each of which contributes to its operational principles. These components include:

• Gate: The gate is responsible for controlling the current flow of the circuit, detecting the presence and quantity of current.
• Screws: The screws provide additional protection against high temperatures, preventing the circuit from overheating.
• Ceramic body: The ceramic body is where the SCR components are located, and provides insulation against electric shock.
• Terminals: The terminals, also known as pins, are responsible for connecting the circuit to the power source.

The principle of operation of the VI20150S-M3/4W is based on the PN junction. A PN junction is formed when two dissimilar materials, such as n-type and p-type, are put in contact with each other. Due to the applied voltage, a barrier between these materials is formed, which essentially acts as a gate. When the gate is open, current will start to flow, and when it is closed, the current flow is effectively blocked.

In terms of power control, the VI20150S-M3/4W is designed to detect the voltage level of the power source, and adjust its output accordingly. When a high voltage is detected, the SCR will open the gate, allowing a higher current to flow, thus increasing the output power. Conversely, when a low voltage is detected, the SCR will close the gate, reducing the current flow and thus reducing the output power.

The VI20150S-M3/4W is a reliable single-phase ultra-fast SCR, offering low forward voltage drop, high forward current as well as high on-state and off-state voltages. It is designed for AC to DC conversion, in applications such as dimmer switches, line voltage regulators, and inverters.

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