QK040K7TP

Series:	--
Packaging:	Tube
Part Status:	Active
Triac Type:	Alternistor - Snubberless
Voltage - Off State:	1kV
Current - On State (It (RMS)) (Max):	40A
Voltage - Gate Trigger (Vgt) (Max):	2V
Current - Non Rep. Surge 50, 60Hz (Itsm):	335A, 400A
Current - Gate Trigger (Igt) (Max):	100mA
Current - Hold (Ih) (Max):	100mA
Configuration:	Single
Operating Temperature:	-40°C ~ 125°C (TJ)
Mounting Type:	Through Hole
Package / Case:	TO-218-3 (Isolated), TO-218AC
Supplier Device Package:	TO-218 Isolated Tab

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Thyristors - TRIACs

Thyristors are a type of semiconductor device with three terminals: anode, cathode and gate. TRIACs, or Triode for AC, are a type of thyristor which activates when triggered at either of its two main electrodes. This makes them ideal for controlling and switching AC circuits. One of the commonly used TRIACS is the QK040K7TP.

QK040K7TP Application Field and Working Principle

QK040K7TP is a quadrac type of thyristor with excellent electrical performance, designed for AC motor control applications. It offers a voltage and current rating of 400V and 40A with a maximum rated surge current rating of 60A, making it suitable for medium power switching and control circuits.The working principle behind the QK040K7TP is quite simple. When the thyristor is off, the gate terminal is open, meaning no voltage will be applied on the gate, and no current can flow through the device. When the gate terminal is triggered, the thyristor becomes conducting, allowing current to flow between the two main electrodes. Once the thyristor is conducting, it stays in the conducting state until either the gate current or the anode-cathode current drops to zero.The main application field of QK040K7TP is motor control. Its high voltage and current ratings, combined with its fast switching speed make it the perfect choice for AC motor control. It is also used for regulating the speed of AC motors and for controlling the start/stop of AC motors.Due to its robust structure, the QK040K7TP can also be used in a range of other applications, such as power supplies, switch-mode power supplies, welding inverters, dimmers, and line drivers.

Advantages of the QK040K7TP

The QK040K7TP has a number of advantages over other thyristors. First, it has a low power loss, meaning it requires less energy to operate, resulting in improved efficiency. Second, it offers a high-energy operating temperature, making it suitable for operating in high-temperature environments, such as motor control applications. Third, it has a fast switching speed, meaning it can quickly switch between different operating states, making it perfectly suitable for motor control applications as well as in other applications where fast switching time is needed. Finally, it has a high surge current rating, making it suitable for use in high-current applications, such as welding inverters and line drivers.

Conclusion

The QK040K7TP is an excellent choice for motor control and other high-power switching applications. It offers a high voltage and current rating, combined with a low power loss, fast switching speed, and high operating temperature. It is also highly robust, making it suitable for a wide range of applications.

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