Q8006VH4

Series:	--
Packaging:	Bulk
Part Status:	Discontinued at Digi-Key
Triac Type:	Alternistor - Snubberless
Voltage - Off State:	800V
Current - On State (It (RMS)) (Max):	6A
Voltage - Gate Trigger (Vgt) (Max):	1.3V
Current - Non Rep. Surge 50, 60Hz (Itsm):	55A, 65A
Current - Gate Trigger (Igt) (Max):	35mA
Current - Hold (Ih) (Max):	35mA
Configuration:	Single
Operating Temperature:	-40°C ~ 125°C (TJ)
Mounting Type:	Through Hole
Package / Case:	TO-251-3 Short Leads, IPak, TO-251AA
Supplier Device Package:	TO-251 (V-Pak/I-Pak)

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Thyristors - TRIACs

Q8006VH4 Application Field and Working Principle

A TRIAC is a type of thyristor that consists of three terminal resistor and can be used for controlling current or voltage in both directions. It is used for various applications such as AC motor speed controlling, dimmer switches, home automation, and loads with inductive characteristics like electric drills and fan motors. The Q8006VH4 is a Thyristor-TRIAC which can switch up to 800V @6A.

Application Field of Q8006VH4

The Q8006VH4 TRIAC can be used in many applications include temperature control, phase control, multiple-zone heating and air conditioning, dimmer switches, AC motor speed control and many other AC thyristor systems. It can also be used for low-current applications such as driving relays, lighting control and household appliances, such as washing machines and vacuum cleaners.

Working Principle of Q8006VH4

The operation of a TRIAC is based on a four-layer semiconductor construction similar to a thyristor. When the gate voltage is below 2V, the TRIAC remains in its blocking state, with both the main and the reverse current is blocked. When the gate voltage rises above 2V, the TRIAC enters the conducting state and current starts to flow from the main terminal to the reverse terminal when the voltage across the main and reverse terminals reaches the breakover voltage of the device. This breakover voltage is usually around 6 to 10V depending on the TRIAC characteristics. When the gate voltage is taken below 2V, the current stops flowing and the device goes back to its blocking state. This feature is exploited in applications such as AC dimmer switches and fan speed controllers, where the TRIAC switches on and off at regular intervals, with the amount of time that the TRIAC is in the conducting state controlling the amount of power delivered to the load.

Operation Mechanism of Q8006VH4

The Q8006VH4 is a four layer device with three terminals, the main terminal (MT1) and thereverse terminal (MT2) and the gate terminal (G). The current flow through the device is controlled by applying a control voltage to the gate terminal. When no voltage is applied to the gate terminal, the device is in its blocking state and no current flows through the device. When an appropriate voltage is applied to the gate terminal, the TRIAC turns on and conducts current from MT1 to MT2, when the voltage applied across MT1 and MT2 exceeds the breakover voltage of the device. The Q8006VH4 has a maximum blocking voltage of 800V, and can switch up to 6A of current in either direction.The main advantage of the Q8006VH4 is its high voltage and current handling capability. It is suitable for applications such as high power dimmer switches and AC motor speed controls, where the high breakdown voltage and high current handling capability of the device is useful. Furthermore, the device has a fast switching time, making it suitable for applications that require rapid response to control. The Q8006VH4 is also suitable for more common applications such as the control of lights and home appliances. The device has a low turn-on voltage and a relatively low on-resistance, making it an ideal choice for these applications.Overall, the Q8006VH4 is a highly versatile and robust TRIAC that can be used for a wide range of AC current or voltage applications. It has a high breakdown voltage, high current capabilities and a fast switching time. It is suitable for applications ranging from high power dimmer switches and motor speed controllers, to the control of lights and household appliances.

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