Q2010F52

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Thyristors - TRIACs

A TRIAC is a three-terminal solid-state device primarily used as a switch or rectifier in AC power control applications. Also referred to as a bidirectional triode thyristor (BTT) or thyristor triode AC switch (TACS), the TRIAC can effectively control current in either direction.

The Q2010F52 is a 600V, 2A TRIAC utilized in AC power control applications. It enables sinusoidal current control in a single semiconductor device. It provides high surge current handling capabilities and over 30mA minimum break-over current, to guarantee reliable operation of the system. Additionally, the device offers high controllability and reproducibility. Its low on-state voltage drop and its high peak trigger current make it suitable for larger applications.

The Q2010F52 features a delicate sensitivity to signals, low leakage current (<0.5mA) and a high off-state voltage (1.2 x VDRM). It is equipped with combination of features proper for light dimmers, motor speed control, soft start and various other AC power control applications, even in resistive and inductive loads.

In terms of construction, the TRIAC chip sits on an isolated three-terminal package with a built-in snubber network. The three terminals are named the gate, main terminal (MT1) and the main terminal 2 (MT2). The main terminals are used to determine the current direction, while the gate terminal is used to switch the load current on and off. The package of the Q2010F52 is designed to be such that it will be mounted directly to provide excellent thermal contact, as well as surface-mount technology.

The working principle of the Q2010F52 TRIAC is as follows. When a signal is applied at the gate terminal (G), the switch turns on, given the signal is greater in magnitude than the holding current value. A signal of either polarized or non-polarized nature can be used to turn on the TRIAC. All the required AC sine wave signals can be obtained from the gate terminal of the Q2010F52. When the peak of the AC signal from the gate terminal is reached, the TRIAC turns off automatically as the signal magnitude falls below the holding current value. This automatically turns off the TRIAC during each cycle, when it gets to the zero-crossing point.

The Q2010F52 is thus suitable for industrial control and home appliance AC line control purposes. It is ideal for applications with both resistive and inductive loads and is capable of controlling higher loads. Its selection of the trigger current level, low thermal resistance and reliable over-current protection make it a perfect choice for designers looking for an effective TRIAC solution for a wide-variety of applications.

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