T835-600H

Overview

The STMicroelectronics T835-600H is a high-temperature Snubberless Triac rated for an RMS on-state current of 8 A and a repetitive peak off-state voltage of 600 V. It operates within a junction temperature range of -40°C to +150°C, housed in a TO-220AB insulated package with a ceramic pad providing 2500 VRMS isolation. Key electrical parameters include a maximum holding current of 35 mA, a gate trigger voltage of 1.2 V, and a gate trigger current of 35 mA. The device features a low on-state voltage of 1.5 V and a maximum off-state leakage current of 5 µA.

Feature Summary

• Snubberless operation eliminates the need for external RC snubber circuits across inductive loads.
• High thermal stability supports continuous operation at junction temperatures up to 150°C.
• Integrated ceramic insulation provides enhanced safety with 2500 VRMS tab-to-heatsink isolation.

Applications

• AC mains switching for water heaters and industrial automation systems
• Motor speed controllers and induction motor starting circuits
• Heating regulation units and HVAC control modules

Procurement Notes

Verify the specific suffix 'H' against official datasheets to confirm the TO-220AB insulated package variant. Ensure the component meets UL1557 certification requirements if electrical isolation is critical for the final assembly design.

Selection Notes

Select this component when driving inductive loads without snubber networks to reduce bill of materials. The 150°C rating allows for smaller heatsinks compared to standard 125°C devices. Verify that the 35 mA gate drive capability matches the output specifications of the controlling microcontroller or driver circuit.

Part Context

This part belongs to the T835 series of Snubberless Triacs designed for general-purpose AC switching. It complements other variants like the T835T-8I and T835H-8I by offering a balance of medium current handling and robust transient immunity for demanding home appliance and industrial environments.

Replacement Considerations

Direct replacements include the T835T-8I and T835H-8I. Confirm that substitute parts maintain the same 600V blocking voltage and 8A current rating while matching the required package insulation standards.