IRKH105/12A

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Thyristors, SCRs, and modules have long been used in a variety of different electronic applications. The IRKH105/12A is an especially popular example of such a device, due to its versatility and reliable performance in a range of settings. In this article, we will take an in-depth look at the application field and working principles of the IRKH105/12A.

Application Field: The IRKH105/12A is a three-terminal, 4 quadrant SCR module with a reverse blocking capability up to 600V. This makes it ideal for use in applications such as DC motor control and switching, soft start or chopper applications, Phase angle control or cycling control, or dimmer control.

The IRKH105/12A also boast a robust construction, making it suitable for industrial applications such as automotive and power conversion, heating and lighting, and many other high-voltage or high-power applications. Its versatile load capacitance range also makes it suitable for use in a wide range of lighting or power control systems.

Working Principle: The IRKH105/12A is an alternating-current (AC) device, meaning it can switch from a positive to a negative voltage. When the voltage reaches a specific level, the device switches on. This trigger voltage is known as the “threshold voltage” and is usually between 5 and 8 volts for the IRKH105/12A.

Once the threshold level has been reached, the device will switch on and allow current to flow. This current will flow through the SCR and the load, delivering power to whatever device the module is powering. As long as the voltage and current within the circuit remain within the acceptable limits specified in the module data sheet, the SCR will stay on until the voltage returns to a level low enough to switch off the SCR. This is known as the "holding" current.

The IRKH105/12A also features a fast turn-on and turn-off time, making it suitable for use in applications that require a fast reaction time. Its reverse blocking capability also provides additional protection against short circuits and other over-voltage conditions.

In summary, the IRKH105/12A is a versatile and reliable SCR module with a wide range of applications. Its robust construction, fast turn-on and turn-off, and reverse blocking capabilities make it an ideal choice for a variety of industrial and commercial applications. Its versatile load capacitance range also makes it suitable for a variety of lighting or power control systems.

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