VS-ST180C12C0L

Thyristors - SCRs

VS-ST180C12C0L is a type of silicon controlled rectifier (SCR), or thyristor, which is a four-layer semiconductor device that functions in three-way: as a switch, phase control and rectifier. It has a fixed on-state voltage and current regulating capabilities. They are used in a wide variety of applications, such as AC and DC circuits, for controlling the current, temperature, and light and for providing surge protection.

Application field

SCRs are used in many applications. They are often found in motor control and lighting systems, particular in motor speed control and dimming systems. They are also used to control and regulate the current, as well as in high-voltage power supplies, inverters and motor drives. SCRs are also commonly used in industrial and domestic heating and cooling systems to start and stop high power loads such as electric heaters, motors and pumps.

SCRs are also used in automotive applications, such as the air-fuel ratio control system of internal combustion engines, for engine control and fuel injection. They are also used in camera flashes, microwave ovens and various other consumer electronics.

Working principle

SCRs are four-layer semiconductor devices consisting of an anode, cathode, base and gate. When the gate voltage is higher than the anode-cathode voltage, the SCR is in the forward blocking state and no current flows from the anode to the cathode. When the gate voltage is lower than the anode-cathode voltage, the SCR is in the forward conducting state and current flows from the anode to the cathode. This allows SCRs to quickly switch on and off, and they can control and regulate the current. SCRs can also be used as rectifiers to convert alternating current to direct current.

SCRs are also capable of the current regulating function. When the anode-cathode voltage is too high, the SCR will start to conduct and reduce the current by cutting off parts of the cycle. This can be used to regulate the current over a wide range and is often used in motor speed control.

SCRs can also be used to protect sensitive equipment from sudden increases in current or voltage. When the current increases above a certain threshold, the SCR will switch on and short-circuit the current thus preventing further current from flowing and protecting the equipment.

VS-ST180C12C0L SCRs are widely used due to their ability to quickly and precisely control the current, and their reliability and high durability. They offer excellent performance in motor speed control, lighting systems, heating and cooling applications, and in protecting equipment from spikes in voltage and current.