T835H-6I

Overview

The T835H-6I is an 8 A RMS Snubberless Triac from the STMicroelectronics H-Series, rated for 600 V blocking voltage. It operates within a junction temperature range of -40 °C to +150 °C and features a non-repetitive peak on-state current of 84 A. The device utilizes a TO-220-3 insulated package with a ceramic pad providing 2500 V RMS isolation. Key electrical parameters include a maximum holding current of 35 mA, a gate trigger voltage of 1 V, and a gate trigger current of 35 mA. It exhibits a typical on-state voltage of 1.5 V and a leakage current of 5 µA at rated voltage.

Feature Summary

• Snubberless design enables direct driving of inductive loads without external RC networks
• High thermal performance allows for reduced heatsink requirements compared to traditional Triacs
• Internal ceramic pad provides robust electrical insulation between terminals and heatsink

Applications

• General purpose mains power AC switching
• On/off control in value-sensitive appliances
• Phase angle control circuits requiring high commutation capability

Procurement Notes

Verify component authenticity through authorized STMicroelectronics distributors or certified partners. Confirm RoHS compliance status and specific manufacturing lot codes against the latest datasheet revisions. Ensure packaging integrity matches the specified tube format to prevent lead damage during installation.

Selection Notes

Select this component for applications requiring high-temperature operation up to 150 °C and reliable commutation in three-quadrant modes. The TO-220-3 insulated package facilitates easy mounting on standard heatsinks while maintaining safety isolation. Consider the 8 A RMS rating against continuous load requirements and derating curves for ambient temperatures exceeding 25 °C.

Part Context

This part belongs to the T835H series of medium-current Triacs designed for general-purpose AC switching. The series emphasizes high static and dynamic commutation capabilities alongside low thermal resistance achieved through clip bonding technology. These devices are UL certified and suitable for various household and industrial appliance control applications.

Replacement Considerations

Direct pin-compatible substitutes may include other 8 A, 600 V Snubberless Triacs in TO-220 packages from manufacturers such as Littelfuse or Infineon. Verify that alternative components match the 35 mA gate trigger current and 150 °C maximum junction temperature specifications to ensure circuit compatibility.