T1235-800G-TR

Triacs Overview

The T1235-800G-TR is a surface-mount bidirectional triac from STMicroelectronics, housed in a TO-263 (D2PAK) package. It features an 800 V repetitive peak off-state voltage and a 12 A RMS on-state current rating. The device supports a non-repetitive surge current of 126 A and operates within a junction temperature range of -40°C to 125°C. Key electrical parameters include a maximum gate trigger current of 35 mA, a maximum gate trigger voltage of 1.3 V, and a peak on-state voltage of 1.55 V. It has a holding current of 35 mA and a peak gate power dissipation of 1 W.

Triacs Feature Summary

• Snubberless design optimized for high commutation performance on inductive loads
• Internal ceramic pad provides insulated tab with 2500 VRMS isolation
• High noise immunity characterized by static dV/dt and dynamic turn-off commutation

Triacs Applications

• Static relays for mains power AC switching
• Heating regulation systems
• Induction motor starting circuits
• Phase control operations in light dimmers
• Appliance motor speed controllers

Triacs Procurement Notes

Verify the specific suffix 'G-TR' against official STMicroelectronics documentation to confirm the tape-and-reel packaging format and RoHS compliance status. Ensure the selected component matches the required thermal management specifications for the intended application environment.

Triacs Selection Notes

Select this component when an 800 V blocking voltage is required for AC load control. The TO-263 package is suitable for surface mount designs requiring robust thermal performance. Consider the Snubberless technology benefits if the application involves significant inductive loads or requires simplified circuit designs without external snubber networks.

Triacs Part Context

This part belongs to the T12xx Triac series, which complements the BTA12 and BTB12 families. While other variants may offer different voltage ratings or through-hole packages, the T1235-800G-TR specifically addresses surface mount applications needing 800 V isolation. The series is generally certified under UL1557 standards.

Triacs Replacement Considerations

Direct replacements within the same family include T1235-600G-TR for lower voltage requirements. For through-hole equivalents, consider the T1235H series. Verify pinout compatibility and thermal resistance differences before substituting.