BT138X-600,127

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Thyristors – TRIACs are devices made up of semiconductor materials that are most commonly used in switching applications. They are designed to switch on, or off, at a set voltage or current, controlling the flow of electricity in a circuit. The BT138X-600,127 is a three-terminal, 600V, RMS, Blocking Thyristors, or TRIACs, from NXP. It offers exceptional thermal performance, featuring low on-state resistance and high power dissipation. This TRIAC is primarily used in applications such as DC motor control, heat and lighting control, appliance motor control, HVAC motor control, and motor speed/direction control.

The BT138X-600,127 is capable of handling a blocking voltage of 600V RMS and a continuous current rating of 12A. The normal operating temperature range is -40°C to 125°C and the unit offers an inductive load turn-off time of 360ns. The device is capable of withstanding a 50A repetitive peak off-state current surge and a common-mode dv/dt immunity of 3000V/μs. The unit also offers di/dt protection, allowing it to be used in high-radiated-noise environments.

The BT138X-600,127 is designed with a widely tunable stand-off voltage with an internal gating resistance of 1KΩ. This ensures that switching applications, which require high voltage and current blocking capabilities, can be safely handled with the TRIAC. The device features both a positive and negative triggering capability and comes with a 400µA on-state current. This makes it easy to operate in switching or control applications where both false gating and false leakage currents are a concern.

In terms of its working principle, when the terminal labeled “MT2” is above the threshold voltage on the terminal labeled MT1, the device will conduct current. As the voltage on the “MT2” terminal drops, current will flow in the opposite direction, allowing the device to switch off. The device is designed with a sensitive-gate design, which enables the detection of small signals and makes it possible to switch the device on and off quickly. This makes it suitable for use in digital control applications.

The BT138X-600,127 is a very reliable and versatile TRIAC that can handle robust loads with low loss and high power dissipation. Its wide operating temperature range and low on-state resistance makes it suitable for a variety of applications such as motor control, lighting control, and heat control. The sensitive-gate design provides reliable switching and high speed operation, making it suitable for digital control applications. As a result, the BT138X-600,127 is ideal for a variety of circuits and applications where high voltage and current blocking capabilities are required.

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