Q401E4

Series:	--
Packaging:	Bulk
Part Status:	Active
Triac Type:	Standard
Voltage - Off State:	400V
Current - On State (It (RMS)) (Max):	1A
Voltage - Gate Trigger (Vgt) (Max):	1.3V
Current - Non Rep. Surge 50, 60Hz (Itsm):	16.7A, 20A
Current - Gate Trigger (Igt) (Max):	25mA
Current - Hold (Ih) (Max):	25mA
Configuration:	Single
Operating Temperature:	-65°C ~ 125°C (TJ)
Mounting Type:	Through Hole
Package / Case:	TO-226-3, TO-92-3 (TO-226AA)
Supplier Device Package:	TO-92

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Introduction

Thyristors are electrical components that are famously known for their ability to control large amounts of current and power. They are suitable to use in controlling AC signals due to their ability to open and close abruptly and stay in either a conducting or non-conducting state. As a result of this, thyristors are often used in industrial applications, such as motor and lighting control, heating, ventilation and air conditioning systems.Thyristors can be classified into different types based on the number of p-n junctions present in the device and its current-voltage characteristics. One such type is the TRIAC, or Triode Thyristor.

Q401E4 TRIAC - Application Fields and Working Principles

The Q401E4 TRIAC is a bidirectional thyristor with a two-layer structure and two gate terminals. It is mainly used in small motor control applications, such as small motors and AC motor control, and can also be used in large motor control applications. As a bidirectional thyristor, the Q401E4 TRIAC is capable of withstanding a large amount of current, typically up to 40A.In order for a Q401E4 TRIAC to operate, it needs a gate signal. This gate signal acts as a switch, triggering the TRIAC on or off depending on the signal. The gate signal is sent through the gate terminals of the TRIAC, which connects to the control circuit. When the gate terminal receives a signal, the gate is energized, allowing current to flow through the TRIAC. If the gate signal is removed, the TRIAC will switch off and current will stop flowing.The Q401E4 TRIAC is suitable for AC applications because it is able to pass current in either direction and is able to turn on and off in a very short time. When used in motor control applications, the TRIAC can provide a much smoother speed control of the motor as compared to using discrete components.

Conclusion

The Q401E4 TRIAC is a bidirectional thyristor used mainly in AC motor control applications. It requires a gate signal in order to operate, and is able to control a large amount of current. As a result, it is suitable for use in industrial applications, such as motor and lighting control, heating, ventilation and air conditioning systems.

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