T1635T-8G-TR

Overview

The T1635T-8G-TR is a Snubberless™ Triac in the D²PAK surface-mount package, rated for 16 A RMS on-state current and 800 V repetitive peak off-state voltage. It supports a non-repetitive surge peak current of 120 A (20 ms) or 126 A (16.7 ms). The device features a maximum junction temperature of 150 °C and operates across three quadrants. Key electrical parameters include a gate trigger current of 35 mA max, an on-state voltage of 1.6 V max at 25 °C, and a holding current of 45 mA max. It offers high static dV/dt immunity and dynamic turn-off commutation capabilities.

Feature Summary

• High static dV/dt provides strong immunity against false turn-on events.
• Enhanced dynamic turn-off commutation ((dl/dt)c) improves reliability in high-temperature environments.
• Extended thermal margin allows operation up to a 150 °C maximum junction temperature.
• Non-insulated tab design ensures good thermal resistance for efficient heat dissipation.

Applications

• General purpose AC line load switching
• Motor control circuits
• Home appliances
• Heating systems
• Lighting controls

Procurement Notes

Verify the specific ordering suffix '-TR' corresponds to tape and reel packaging when sourcing components. Confirm that the D²PAK package variant matches the required footprint dimensions for PCB layout. Ensure compliance with RoHS and Halogen-Free standards as specified by the Ecopack®2 grading. Check for any recent product change notifications regarding manufacturing updates.

Selection Notes

Select this component for applications requiring high commutation capability without external snubber RC circuits. Consider the 150 °C junction temperature limit for thermal management calculations. Evaluate the 16 A RMS rating against continuous load requirements and derate based on case temperature. Verify that the 35 mA gate trigger current aligns with the driving circuit's output capability.

Part Context

This part belongs to STMicroelectronics' T-Series of Snubberless™ Triacs. It shares functional characteristics with other variants like the T1235T-8G and T2035T-8G, differing primarily in current ratings and package types. The T1635T-8G specifically targets general-purpose AC switching where compact SMD packaging and robust performance are needed.

Replacement Considerations

Direct substitutes within the same series include T1635T-8G (tube packaging) for identical electrical specifications but different delivery format. Other current-rated variants such as T1235T-8G or T2035T-8G may serve as alternatives if current requirements differ, provided the package and voltage ratings remain compatible.

FAQ

Can the T1635T-8G-TR operate without a snubber circuit?

Yes, it can be used without a snubber RC circuit provided the limits defined in the datasheet are respected.

What is the critical rate of rise of on-state current (dl/dt)?

The critical rate of rise of on-state current is 100 A/µs at a junction temperature of 150 °C.

Is the D²PAK package electrically insulated?

No, the D²PAK package features a non-insulated tab. For insulated options, consider the TO-220AB-Insulated variant.