T2035T-8G

Overview

The T2035T-8G is a Snubberless™ Triac in a D²PAK surface-mount package, rated for 20 A RMS on-state current and 800 V repetitive peak off-state voltage. It supports a non-repetitive surge peak current of 160 A at 20 ms or 168 A at 16.7 ms. The device operates with a maximum gate trigger current of 35 mA and maintains a junction temperature range from -40 °C to +150 °C. Key electrical parameters include a minimum static dV/dt of 1000 V/µs at 150 °C and a critical turn-off commutation rate (dl/dt)c of 17.5 A/ms at 150 °C. Thermal resistance from junction to case is 1.15 °C/W.

Feature Summary

• High immunity to false turn-on due to elevated static dV/dt ratings
• Improved turn-off performance in high-temperature environments via enhanced dynamic commutation capability
• Extended thermal margin enabled by a maximum junction temperature of 150 °C
• Optimized thermal resistance characteristics provided by the non-insulated tab design

Applications

• General purpose AC line load switching
• Motor control circuits
• Home appliances
• Heating systems
• Lighting control
• Inrush current limiting circuits
• Overvoltage crowbar protection

Procurement Notes

Verify the specific ordering suffix when sourcing components. The standard tube packaging corresponds to the base part number, while tape and reel options utilize a TR suffix. Confirm that the received devices match the required packing quantity and physical marking to ensure compatibility with automated assembly processes.

Selection Notes

Select this component for applications requiring high commutation capability without external snubber networks. Ensure the circuit design respects the defined limits for dV/dt and (dl/dt)c to prevent unintended triggering or failure. Evaluate the thermal management strategy carefully, as the non-insulated tab requires isolation from the heatsink if electrical grounding is necessary.

Part Context

This device belongs to STMicroelectronics' T-Series of Snubberless™ Triacs. It shares core technology with other variants in the family but is distinguished by its 20 A current rating and D²PAK surface-mount form factor. The series is designed to simplify AC switching designs by eliminating the need for traditional RC snubber circuits under specified operating conditions.

Replacement Considerations

Direct replacements within the same series include the T1635T-8G (16 A) and T2535T-8G (25 A), which share identical voltage ratings and package types. Verify that the substitute's current handling capacity meets the application requirements and that the pinout configuration remains compatible with the existing PCB footprint.