Thyristors - TRIACs

A triac is a three terminal semiconductor device, which is essentially a combination of two SCRs connected in inverse parallel with the third terminal connected to the gate of either SCRs. It is the most widely used bidirectional AC switch in electronic systems. A thyristor is also referred to as TRIAC, which stands for Triode for Alternating Current. The QJ4016LH3TP is a 1600V/4A TRIAC, which can be used in various applications such as AC motor control and isolation applications.

QJ4016LH3TP application field

The QJ4016LH3TP is a very useful application field device due to its high voltage and current ratings. It is widely used in industries such as automotive, healthcare, and industrial automation and robotics. It is also used in residential and commercial lighting applications, as well as in AC motors, surge protectors, contactors, relays and LED drivers.

The QJ4016LH3TP can be used in both AC and DC circuits. In AC circuits, it is commonly used for controlling the AC motor speed, controlling the switching of loads and for providing isolation for loads. In DC circuits, the TRIAC can be used for controlling the DC motor speed, controlling the switching of loads and providing isolation for loads. It can also be used in switching circuits to provide circuit protection from AC voltage fluctuations, or to provide relay or contactor control.

The QJ4016LH3TP can be used in various other applications, including heaters, solar inverters, and power factor correction. It has a high power rating, so it is suitable for applications where high power is required.

QJ4016LH3TP working principle

The QJ4016LH3TP is a thyristor, which can be either gate or AC triggered. When the gate current is applied, the thyristor is forward biased and turns on, and the current flows in the device. When the AC voltage is applied, it will turn on the device and the current flows in the direction of the voltage. Depending on how the device is connected, it will either stay on or turn off at the zero crossing of the AC voltage.

The QJ4016LH3TP has a high power rating and high voltage and current ratings, so it is suitable for a variety of applications. It is important to understand the device\'s working principle and usage before using it to ensure it is used safely and correctly.