STMicroelectronics 3-Pin TRIAC 800 V Gate Trigger 1.3 V TO-220AB Package T835H-8I

The STMicroelectronics T835H-8I is a 3-pin TRIAC semiconductor device specifically engineered for compact and efficient AC load driving applications. Featuring a repetitive peak reverse voltage of 800 V and a gate trigger voltage of 1.3 V, it provides stable and reliable switching performance. Encased in the TO-220AB insulated package, it allows enhanced thermal management, helping to reduce heatsink size requirements while operating efficiently at temperatures from -40°C to 150°C.

This TRIAC supports a rated average on-state current (Irms) of 8 A and a surge current rating of 84 A, making it suitable for handling transient electrical loads without damage. The device is built on ST's proprietary high temperature snubberless technology, offering high noise immunity levels and robust dynamic turn-off commutation, which minimizes false triggering and switching noise in demanding industrial environments.

Three triggering quadrants allow versatile application in a variety of circuits, while the maximum gate trigger current of 35 mA ensures responsive gate control. The device integrates maximum holding current and peak gate power dissipation ratings of 35 mA and 5 W respectively, contributing to stable operation under dynamic load conditions.

Its compact dimensions of 15.9 mm length and 10.4 mm height facilitate easy integration in tight electronic assemblies and ensure good heat dissipation. Additionally, STMicroelectronics T835H-8I TRIAC is UL recognized for insulation as per UL1557 standards, enhancing its suitability in safety-critical applications.

Common industrial uses include power control in HVAC equipment, lighting dimmers, motor speed controllers, and other automated industrial and commercial systems that require reliable AC switching.

Rated average on-state current of 8 A. TO-220AB insulated package for improved thermal management. Maximum gate trigger current of 35 mA. Surge current rating of 84 A for transient resilience. Operating temperature range from -40°C to 150°C.

ST high temperature snubberless technology for noise immunity. Three triggering quadrants for flexible circuit design. Dynamic turn-off commutation enhances switching stability. UL recognized insulation as per UL1557. Compact size with length 15.9 mm and height 10.4 mm.

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