CR0720SB Datasheet/PDFCR0720SB is a silicon controlled rectifier (SCR) that is used for a wide range of applications as an electronic controller. It is a three-terminal semi-conductor device that functions as an electrical switch. By changing its gate voltage, the flow of current through the device can be controlled. Control application fields of the CR0720SB understand control power in consumer or automotive alternators, battery chargers, motor speed control, AC and DC inverters, temperature control systems, and UPS inverter systems. The CR0720SB are suitable for applications with AC currents of up to 500 A.
The working principle of the CR0720SB is based on the fact that a controlled rectifier is a three layer diode that acts as a switch when triggered. It consists of a PN junction, with the anode and cathode terminals connected to two layers of semiconductor material and a gate terminal. When the gate terminal is negatively activated, a small current flows from the gate to the PN junction. This current makes it electrically conductive and allows the anode-cathode current to flow. When the gate current is removed, the current flow stops and the CR0720SB turns off.
The CR0720SB has several design and performance features that make it an ideal choice for medium and heavy-duty electronics applications. It is designed with an internal inverse current protection system and an improved dynamic on-off circuit that improves protection against pulsed inductive loads. It also features dynamic noise immunity and a low forward voltage. The thyristor is designed to meet the requirements of EN-60335-1, the leading European standard for industrial control components, and is suitable for use in temperature control systems and consumer electronic products.
In summary, the CR0720SB is a versatile and reliable SCR suitable for automotive alternators, temperature control systems, UPS and consumer electronics. Its superior design provides protection against pulsed inductive loads, noise and forward voltage. The CR0720SB is designed to meet the EN-60335-1 standard, making it a perfect choice for industrial control applications.