BTA208S-600B,118

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Thyristors - TRIACs

Thyristors, also known as silicon control rectifiers (SCRs) or solid-state switching devices, are three-terminal semiconductor devices sufficient for switching electrical currents and voltages control in comparison to conventional mechanical switches. A TRIAC is a type of thyristor that allows current to flow bidirectionally in both directions between its Anode and Cathode terminals. The BTA208S-600B is an AC and DC powered TRIAC from STMicroelectronics that makes a great choice for applications such as gate drivers, AC line switches, bipolar lamp dimmers and motor speed control. The device is an intelligent switch with a maximum VDRM of 600v. It operates over a system temperature range of -40C to +125C. The BTA208S-600B is capable of passing an operating current of 8A RMS which offers an output of peak current of 25A.

Application Field

The BTA208S-600B TRIAC is a suitable device for controlling high-current and high-voltage load circuits such as AC line switching and circuit protection in industrial, commercial and domestic appliances, motor speed control and lamp dimming. This Thyristor is also ideal for automotive applications, making it perfectly suited for steering, transmission, climate control and powertrain systems.

Working Principle

The BTA208S-600B is triggered by an electrical signal applied to an external gate terminal, allowing a current to flow between the Anode and Cathode. The Thyristor then maintains conduction for the remainder of the half cycle, until the applied voltage reaches zero. This device is suitable for driving single-phase AC loads, with small switching turn-on and turn-off times. In addition, it has an overvoltage feedback capability, which reduces the likelihood of significant voltage droop in the event of a short circuit or overloading.

The BTA208S-600B Thyristor is also equipped with a built-in high temperature shutdown feature, in order to protect the external circuit and maintain device reliability. This feature will shut off the device should the junction temperature reach a certain threshold, thus preventing any further damage. In addition, the device is equipped with a tunable threshold voltage, allowing for fine tuning of the device operation and performance.

The BTA208S-600B is a suitable device for high-power applications and is a great choice for gate drivers, AC line switching, bipolar lamp dimmers, and motor speed control. It is capable of passing an operating current of 8A RMS and offers an output of peak current of 25A.

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