T835H-8G

Overview

The T835H-8G is an 8 A, 800 V Triac from STMicroelectronics' H-Series, housed in a D2PAK surface-mount package. It features a maximum junction temperature of 150 °C and utilizes Snubberless technology for high noise immunity and robust dynamic turn-off commutation. Key electrical parameters include an on-state RMS current (It RMS) of 8 A, a repetitive peak off-state voltage (VDRM) of 800 V, and a non-repetitive peak on-state current of 84 A. The device exhibits a typical on-state voltage of 1.5 V, a maximum holding current of 35 mA, and gate trigger specifications of 1.3 V and 35 mA. Operating temperatures range from -40 °C to +150 °C.

Feature Summary

• Snubberless design enables direct control of inductive loads without external RC snubber circuits.
• High static dV/dt noise immunity ensures reliable operation in electrically noisy environments.
• Robust dynamic turn-off commutation performance supports demanding AC switching applications.

Applications

• General purpose AC switching
• Heating regulation systems
• Induction motor starting circuits

Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm package type and compliance status. Confirm RoHS directives and UL insulation recognition requirements with the supplier prior to procurement. Ensure component authenticity through authorized distribution channels to mitigate counterfeit risks.

Selection Notes

Select this component for designs requiring surface-mount integration with high thermal tolerance up to 150 °C. Evaluate the 8 A current rating against load requirements and ensure adequate heatsinking within the D2PAK footprint constraints. Verify compatibility with logic-level drivers if direct microcontroller interfacing is intended.

Part Context

This part belongs to the T835 series of medium-current Triacs designed for general-purpose AC switching. The H-Series variant specifically targets enhanced thermal management and high-temperature stability compared to standard counterparts, making it suitable for compact drive applications where space and heat dissipation are critical factors.

Replacement Considerations

Cross-reference with other T835H variants or equivalent 8 A/800 V Snubberless Triacs in D2PAK packages. Verify pinout compatibility and thermal resistance characteristics before substitution to maintain circuit performance and safety margins.