VS-ST180S04M1V

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Thyristors - SCRs

A silicon controlled rectifier (SCR) or thyristor is a type of semiconductor device that is used as a switch or rectifier. They are unidirectional and require a minimum of three terminals. The three terminals are labeled anode (A), cathode (K) and gate (G). When the gate terminal is triggered, current flows from the anode to the cathode. The VS-ST180S04M1V is a four-pin SCR that comes in a TO-220AB package.

Application field and Working Principle

The VS-ST180S04M1V is suitable for controlling medium power applications such as inductive heating, AC polarity switching, ESD protection and motor control. It is designed for use in a wide range of operating temperatures, from -55°C to +150°. It can handle current ratings up to 18A/25A for an RMS/peak load respectively.

The working principle of the SCR is that its main function is to serve as a two-way switch when the gate voltage or current is triggered or interrupted. This is accomplished by utilizing the SCR\'s three-terminal structure. The anode is the positive terminal, and the cathode is the negative terminal. In order to activate the SCR, the gate terminal needs to be connected to the anode terminal. However, the gate terminal must have a higher voltage than the anode to close the circuit. Then, the current will be allowed to flow from the anode to the cathode and the SCR will be in a "turned-on" state. The application of a negative voltage to the gate terminal will turn the SCR off. One thing to keep in mind is that when the SCR is off, it will stay off and will not switch itself back on. This particular feature makes the SCR a great option for use in other functions such as rectification, snubbing, timing, controlling and overcurrent protection.

The VS-ST180S04M1V is an ideal choice for medium power applications due to its good combination of characteristics. Its robust internal electrostatic discharge (ESD) protection and its wide operating temperature range make it perfect for use in applications that require ESD protection. Its fast switching capability makes it ideal for use in controlling medium power applications and it can handle both RMS and peak current ratings. The VS-ST180S04M1V is a great choice for use in medium power applications such as motor control and inductive heating. Additionally, it is a great choice for manufacturers who are looking for reliable, durable and easy to use SCRs.

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