Q2X8E4

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Thyristors are a class of power electronic devices which have a high degree of control over the conduction of electricity from one side of the device to the other.Thyristors have three main power switching modes: on/off, linear and pulse-controlled.TRIAC is a three-terminal and three-layeractive (semiconductor) power device.It is a popular and cost-effective device for controlling current in AC circuits.The Q2X8E4 version of the TRIAC is a snubberless, cost-effective, ultra-fast, medium-power solution for application in lighting, motor control and other industrial applications.

The Q2X8E4 TRIAC features a low on state voltage drop of 0.18V, fast switching times, and a high surge current rating of up to 18A.It offers a wide range of gate drive supply range of 4.5V to 15V and is designed to be mounted onto heatsink material.This makes it suitable for use in commercial, industrial, and consumer applications.The TRIAC also offers a soft-turn on capability with an integrated delay circuit, preventing current spikes and eliminating the need for an external snubber circuit.

The TRIAC’s working principle is based on an open loop structure called thyristor or SCR.The TRIAC consists of two PN-junctions wired in series, with a gate connected in parallel to one half. The gate voltage can be varied from zero to the breakdown voltage to turn on the current flow through the device.When the gate voltage exceeds the threshold, the TRIAC turns on, allowing current to flow from the anode to the cathode.This type of structure allows the TRIAC to switch both polarities of an AC signal and can control the output current by varying the applied gate voltage.

Q2X8E4 TRIACs are used in industrial applications for controlling power and current, such as in motor control applications, load switching, and light dimming. They are also used for power factor correction and active power filters.Due to their snubberless design, Q2X8E4 TRIACs require no additional external components, reducing costs and making them ideal for low-cost projects.The device also offers very low on-state resistance, providing increased efficiency and accuracy in regulation.

In summary, the Q2X8E4 TRIAC is a snubberless, cost-effective, ultra-fast, medium-power solution for application in lighting, motor control and other industrial applications. Its working principle is based on an open-loop structure which allows the TRIAC to switch both polarities of an AC signal and control the output current. This type of TRIAC is used in a variety of applications, including power factor correction and active power filters. The device offers a low on state voltage drop, a wide range of gate voltage supply, and high surge current rating.

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