T1250H-6G-TR Discrete Semiconductor Products

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Thyristors - TRIACs

The T1250H-6G-TR is a TRIAC, or a three terminal AC switch composed of two SCRs (silicon-controlled rectifiers). It is a specialized type of semiconductor that functions as a voltage and current regulator. The T1250H-6G-TR is a 25 Amp, 6 Volt model, with a nominal on-state current rating of 7.5 Amps. The SCRs that make up the TRIAC can be triggered independently, allowing for a high degree of control over the output of the TRIAC.

Application Field

TRIACs are used in a variety of applications where a controlled, efficient means of controlling electric current or voltage is required. The design and form factor of the T1250H-6G-TR is well suited for a number of applications, including motor control, LED illumination, and audio power amplifiers. The combination of the SCRs and the protection circuitry that is typically built into these devices also make them well-suited for general-purpose switching applications.

Working Principle

The two internal SCRs are conjoined at the cathode terminal, with the gate and anode terminals. This structure allows for independent triggering of the two SCRs, allowing for the current (and voltage) to be controlled with a high degree of accuracy. The gate can be triggered manually, or through an external circuit, to adjust the amount of current flowing through the device. The protection circuitry ensures that the device does not exceed the amount of current specified in the datasheet.

When current is flowing through a TRIAC, the voltage across the terminals will shift slightly based on the current. This shift is referred to as phase control, and allows for a wide range of power control. In addition, one of the SCRs can be turned off momentarily, allowing for short pulses of current, further amplifying the degree of control.

The T1250H-6G-TR has a built-in thermal protection, which will turn off the device in the event of an over temperature condition. This helps to protect the device from damage and prolong its lifetime.

Conclusion

The T1250H-6G-TR is a robust, efficient, and reliable TRIAC designed for a variety of applications. Its combination of independent gate control, phase control, and built-in protection circuitry make it an ideal choice for any application that requires a high level of control and reliability.

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