T1235T-8G

Triacs Overview

The T1235T-8G is a Snubberless Triac from STMicroelectronics, rated for 12 A RMS on-state current and 800 V repetitive peak off-state voltage. It operates within a junction temperature range of -40 °C to +150 °C and features a non-repetitive surge current capability of 95 A. The device exhibits a maximum on-state voltage of 1.6 V, a holding current of up to 40 mA, and a gate trigger voltage of 1.3 V with a gate trigger current of 35 mA. Packaged in a D2PAK (TO-263-3) surface-mount format, it supports three-quadrant triggering and includes an Ecopack 2 compliant housing.

Triacs Feature Summary

• Snubberless operation allows use without external RC snubber circuits when defined limits are respected
• High static dV/dt provides immunity against false turn-on events
• High dynamic turn-off commutation capability ensures reliable switching under demanding conditions
• Extended thermal performance supports continuous operation at junction temperatures up to 150 °C

Triacs Applications

• General purpose AC switching requiring high commutation capability
• On/off control functions for AC loads
• Phase angle control applications

Triacs Procurement Notes

Verify the specific ordering suffix and package variant against the manufacturer's official datasheet before procurement. Confirm that the D2PAK footprint matches the target PCB design. Ensure compliance with RoHS and Halogen-free requirements if specified by the end application standards. Check for any recent Product Change Notifications that may affect pinout or material composition.

Triacs Selection Notes

Select this component for applications requiring robust AC switching without complex snubber networks. The 12 A rating suits moderate power loads, while the 800 V blocking voltage handles standard industrial line voltages. Consider the D2PAK package for surface-mount assembly needs where thermal dissipation through the tab is viable. Verify that the gate drive circuit can supply the required 35 mA trigger current reliably across the operating temperature range.

Triacs Part Context

This device belongs to the T-Series of Snubberless Triacs manufactured by STMicroelectronics. It shares core electrical characteristics with other members of the family but differs in packaging and specific thermal resistance values. The T1235T-8G specifically utilizes the D2PAK form factor, distinguishing it from through-hole variants like the T1235T-8I or lower current density alternatives within the same voltage class.

Triacs Replacement Considerations

Direct replacements include other STMicroelectronics Triacs from the T-Series with identical 12 A/800V ratings and D2PAK packaging, such as the T1235T-8R. Cross-manufacturer equivalents must be verified for matching dV/dt, (di/dt)c, and gate trigger specifications to ensure snubberless compatibility.