Q2035NH5TP

Thyristors - TRIACs

Thyristors are components used for switching or controlling electricity. Thyristors are made up of three or four layers of alternate types of semiconducting materials. The major types of thyristors are: thyratrons, rectifiers, TRIACs, Unijunction Transistor (UJT), Silicon Control Rectifier (SCR), and bidirectional semiconductor switch. Among these, TRIACs are the most commonly and widely used due to the advantage of its bidirectional switching capacity. TRIACs (Triode for alternating current) is a bidirectional semiconductor switch that is capable of both switching and regulating AC power. It also provides a fast mean to control AC current and voltage.

Q2035NH5TP is one of the TRIACs available in the market. It is a 4-pin surface mount TRIAC with rated voltage of 400V, blocking current of 5A, and gate trigger current of 5mA. It is mainly used in applications where large current needs to be switched on, or off, with small pulse of gate current. Some of the common applications of Q2035NH5TP includes: AC motor control; home appliances and lighting control (fans and lightings); air conditioning systems, heating units, and boiler control; and industrial automation.

Q2035NH5TP Application Field and Working Principle

Q2035NH5TP is mainly used in applications where large current needs to be switched on, or off, with small pulse of gate current. The working principle of Q2035NH5TP is based on the fact that when gate current is applied, it creates a conducting path between anode and cathode terminals, enabling electricity to flow through it. When the gate current is removed, the conducting path is also removed, and the TRIAC is turned off. This process is applicable both in forward and reverse bias. The only difference between the two is that in forward bias, the gate current is applied from anode to cathode and in reverse bias, it is applied from cathode to anode.

In AC applications, the on-off switching of the TRIAC depends on the zero voltage crossing of the AC voltage. The TRIAC is turned on when the voltage across its terminals is zero, and is turned off when it is at its peak or valley. The size of the gate current determines the time duration for which the TRIAC will remain turned on, before it is turned off. If the current is small, the TRIAC will be turned on for a short duration and if the current is large, it will be turned on for a longer duration.

Q2035NH5TP provides advantage over other TRIACs because of its rated voltage of 400V, blocking current of 5A, and gate trigger current of 5mA. It can handle large power applications and is suitable for the above mentioned application fields. It is also a 4-pin surface mount TRIAC, which means it can be fitted in the PCBs with limited space, making it suitable for most of the applications.

Apart from the main application fields of Q2035NH5TP, it can also be used in many other electronic applications such as medical equipment, power supplies, motor drives, and other power circuits.

Conclusion

In conclusion, Q2035NH5TP is one of the widely used TRIACs in the market. With the advantage of its 400V rated voltage, 5A blocking current, and 5mA gate trigger current, it provides the best performance in various AC applications. It is ideal for applications which require large current switching with small pulse of gate current, such as motor control, home appliances and lighting control, air conditioning systems, heating units, boiler control, and industrial automation. It can also be used in many other electronic applications such as medical equipment, power supplies, motor drives, and other power circuits.