T1225T-6I

Triacs Overview

The T1225T-6I is a Snubberless logic level standard 12 A TRIAC manufactured by STMicroelectronics. It features a rated repetitive off-state voltage (VDRM) of 600 V and an on-state voltage of 1.55 V. The device supports a non-repetitive on-state current of 95 A with a maximum holding current (Ih) of 20 mA. Gate triggering requirements include a voltage (Vgt) of 1.3 V and a current (Igt) of 40 mA. Leakage current at VDRM is limited to 5 uA. Operating temperatures range from -40 C to +125 C. It utilizes a TO-220-3 through-hole package.

Triacs Feature Summary

• Snubberless design for simplified circuit implementation
• Logic level gate compatibility for direct microcontroller interfacing
• High static and dynamic commutation capability
• Low thermal resistance achieved through clip bonding technology

Triacs Applications

• General purpose AC switching
• On/off control functions
• Phase angle control applications

Triacs Procurement Notes

Verify the specific ordering suffix to ensure correct packaging and compliance status. Confirm RoHS directive adherence and REACH SVHC declarations against current regulatory requirements. Check for UL certification file E81734 if safety approval is mandatory for the target market. Validate that the TO-220-3 insulated package meets mechanical mounting constraints.

Triacs Selection Notes

Select this component when high commutation capability is required in value-sensitive appliances. Ensure the 600 V rating matches the peak line voltage plus transients. Verify that the 40 mA gate drive current is within the capabilities of the control circuitry. Consider the 2500 V rms insulation rating for isolation requirements in the TO-220AB insulated package variant.

Triacs Part Context

This part belongs to the T12T series of Triacs designed for medium current applications. The series is characterized by low thermal resistance and robust surge handling. It is intended for use in general-purpose AC switching where high commutation performance is critical. The Snubberless trademark indicates optimized dv/dt characteristics.

Triacs Replacement Considerations

The T1220T-6I is a related model within the same series but differs in gate trigger current specifications. Verify compatibility before substitution as the Igt requirement varies between these variants.