Q8006LH4

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Q8006LH4 Application Field and Working Principle

Thyristors - TRIACs are an integral part of almost all modern electronic devices, from mobile phones and computers to home appliances and industrial controls. The Q8006LH4 is a medium-power alternative to the classic SCR-TRIAC, particularly suited to applications that require high gate sensitivity, excellent dV/dt characteristics and a broad variable range of surge current. These Thyristors – TRIACs are ideal for controlling variable speed motors, light dimmers, time delay circuits and static power converters using microcontrollers or digital circuits.

Overview

The Q8006LH4 is a high-power alternative to the traditional SCR-TRIAC with the addition of a P+ layer at the gate. This allows the device to be triggered by microcontrollers or digital circuits with a minimal control current of just 5 mA. The P+ layer also provides a wide on-state voltage blocking capability from 700 to 1000 volts, ensuring reliable operation in a variety of different applications. The device comes in a wide range of packages, including a modern DFN package, allowing for easy integration in even the most compact systems.

Working Principle

The Q8006LH4 has two distinct parasitic diodes created by the P+ and N+ layers at the gate. When the gate voltage is low, one of the parasitic diodes is forward-biased, creating a low-resistance “on” state. As the gate voltage increases, the forward-biased diode is then reversed biased, creating a high-resistance “off” state. This allows the device to be used as a switch or a rectifier to control the current flow in a circuit.

Applications

The Q8006LH4 is best suited for use in applications that require low control currents and high voltage blocking. These devices are often used in motor control, lighting control, static power converters, and time delay circuits. They are also suitable for use in automotive and industrial applications, as well as commercial and home electronics.

Conclusion

The Q8006LH4 is a medium-power alternative to traditional SCR-TRIACs. It combines high gate sensitivity and excellent dV/dt characteristics with a wide range of surge current. The P+ layer makes it particularly suitable for applications requiring low control currents and high voltage blocking. This makes it an ideal choice for a variety of applications, from motor control to lighting control and static power converters.

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