Q6025R5

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Thyristors – TRIACs—Q6025R5 application field and working principle

Thyristors are semiconductor devices with three or more terminals that are used for controlling current. TRIACs—or TRIode for Alternating Current—are a type of thyristor designed to switch alternating current and phase control applications. A Q6025R5 is a TRIAC specifically designed for controlling phase angle in power circuits, such as motor starter controls and industrial heating systems, due to its fast and soft switching characteristics.

Q6025R5 Features

The Q6025R5 is a 2A, 400V TRIAC that has a wide operating range with no need for a snubber circuit due to its fast operation. It has a zero-cross rating, meaning the TRIAC can switch off cleanly right after the current passes through zero. In addition, the Q6025R5 is typically used in applications that require short current bursts or short switching times. This makes it ideal for applications such as fan speed control, light dimmer, and temperature monitoring.

Q6025R5 Principle of Operation

TRIACs conduct when the applied voltage reaches a certain level, which is known as the turn-on voltage. The Q6025R5 can be turned on using either an AC or DC signal, depending on the control circuit used in the application. The turn-on voltage of a Q6025R5 is typically around 7V.

When the Q6025R5 is turned on, it will latch and start conducting current until the current reaches a certain level. This threshold is known as the holding current. When the holding current is reached, the TRIAC will release and turn off. It will also turn back on when the AC signal reaches the turn-on voltage again.

Q6025R5 Application Field

The Q6025R5 is a popular choice in AC power control circuits due to its fast switching, soft switching and zero-cross characteristics. It is typically used in motor starter controls, light dimmers, AC power switches, and other applications where phase control is needed. The Q6025R5 is also used in temperature monitoring circuits, fan speed control, and other such applications where rapid and soft switching is a requirement.

The Q6025R5 is a general-purpose TRIAC that is protected against overcurrent and overvoltage. It is a low-power device, ideal for applications that require low power consumption. Additionally, the Q6025R5 is a good choice for applications in harsh environments due to its high temperature and radiation tolerance.

Conclusion

The Q6025R5 is a type of TRIAC designed for controlling current in power circuits and applications that require soft and fast switching characteristics. It has a turn-on voltage of 7V and a holding current of 7A. The Q6025R5 is usually employed in motor starter control, AC power switches, light dimmers, temperature monitoring, fan speed control, and other such applications. This TRIAC is protected against overvoltage, overcurrent, and radiation, and is a good choice for applications that require low power consumption and high temperature tolerance.

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