OT412,115

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A TRIAC is a three-terminal, three-junction, semiconductor device primarily used as an AC switch. It is based on a thyristor or SCR (silicon controlled rectifier) and is somewhat of an analog of two back-to-back anti-parallel SCRs connected together. It was designed to switch currents over a wide range of amplitudes and frequencies in applications like light dimming, motor speed control, temperature control, etc. The TRIAC’s full name is the Bidirectional Triode for Alternating Current, which is the more popular version in use today.

The OT412,115 is an N-channel triode AC switched silicon controlled rectifier, or TRIAC. It is widely used in the field of lighting and current control, motor speed control and other general electronic applications. The device is designed to switch on-and-off AC currents up to 400 amps in amplitude. The OT412,115 features low on-state voltage drop, low holding current, and a high gate trigger current rating. It also provides a high breakdown voltage, making it ideal for high-current rectifying applications.

The working principle of a TRIAC is simple. When a positive voltage is applied to the base (gate) of the device, it triggers the thyristor and conducts current from the main terminal to the other main terminal. This action is reversible; when the voltage applied to the gate is reversed, the device will not turn off until the main current has fallen below a certain minimum value. This minimum value is known as the latching current. The TRIAC can also be turned off by applying a negative voltage to the gate, which cuts off the current in both directions. The key feature of the TRIAC is its ability to switch both polarity AC currents.

The OT412,115 can be used in various applications such as dimmers, motors, and AC power control. In dimmers and other lighting applications, the TRIAC is used to regulate the current that powers a light bulb to achieve dimming. In motor control applications, a TRIAC is used to increase or decrease the speed of the motor. In AC power control applications, a TRIAC is used to switch AC power on and off from a remote location.

The OT412,115 has been designed to be a reliable, cost-effective, and efficient TRIAC for current and voltage control. Its low on-state voltage drop and low holding current, as well as its high gate trigger current rating, make it ideal for various applications. With its long history in the industry and proven track record, the OT412,115 remains a popular and widely used device.

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