Q4012NH5TP

Thyristors - TRIACs

A TRIAC is a three-terminal, solid-state semiconductor device, which can be used as a switch in AC power control applications. It was developed in the late 1960s and has been widely used in industry ever since.

The Q4012NH5TP is a 600V quadrant, 4 ampere Thyristor TRIAC which is specifically designed for AC power control. It features low on-state voltage drop, low turn-on and turn-off current, low gate trigger current and can handle high surge current. It is widely used in HVAC controls, lighting, motor control, solid-state relays and AC power control applications.

Principle of Operation

The Q4012NH5TP is a four quadrant TRIAC, which means it can pass current in both directions when triggered. It consists of three terminals: gate, main terminal and the other for an anode. When a positive pulse is applied to the gate, current begins to flow from anode to main terminal and from main terminal to anode. In order to control the current flow, the gate pulse must be removed before the current reaches the peak of the cycle.

The Q4012NH5TP is a quadrant-based TRIAC with four terminals. By adjusting the gate pulse in each of the four quadrants, it is possible to control the current in each phase independently. This allows for precise control of the current flow in each phase, which is particularly useful in applications that require precise control of AC current such as motor speed control and lighting control.

Application Areas

The Q4012NH5TP is widely used in AC power control applications such as HVAC, lighting, motor control and solid-state relays. It can be used in applications such as power supplies, industrial controls, UPS and heating, ventilation and air conditioning (HVAC) systems.

In motor control applications, the Q4012NH5TP is used to control the rotation speed of a motor. By controlling the current flow, the speed and direction of the motor can be accurately controlled. The Q4012NH5TP can be used in lighting control applications, where it is used to control the dimming of the lights and even turning them on and off. It can also be used for controlling the speed of an electric motor in a fan or other motor driven device.

In solid-state relays, the Q4012NH5TP can be used to switch large currents in AC circuits. It is particularly useful in high current applications as it is capable of handling up to 4 Amps of current. The Q4012NH5TP is also used in many industrial control applications, where it can be used to switch large currents in high voltage AC circuits.

Conclusion

The Q4012NH5TP is a 600V quadrant, 4 ampere TRIAC specifically designed for AC power control. It features low on-state voltage drop, low turn-on and turn-off current, low gate trigger current and can handle high surge current. It is widely used in motor control, lighting control, HVAC and solid-state relays applications.