T405-800H

Overview

The T405-800H is a 4 A logic level Triac from the STMicroelectronics T4 series, rated for 800 V repetitive peak off-state voltage. It utilizes Snubberless and logic level technology to provide high commutation performance suitable for AC inductive loads. The device operates with a maximum gate trigger current of 5 mA and supports an operating junction temperature range up to +125 °C. It is available in IPAK, DPAK, and TO-220AB packages.

Feature Summary

• Logic level sensitivity enabling direct drive from microcontroller ports
• Snubberless design providing immunity to voltage transients
• Three-quadrant triggering capability for universal AC load control

Applications

• Motor control circuits
• General purpose AC inductive loads
• Small home appliances

Procurement Notes

Verify the specific package type (IPAK) and voltage rating (800 V) against the datasheet ordering information table. Confirm that the component is marked as T4 0580. Ensure compliance with ECOPACK environmental standards if required by the design specifications.

Selection Notes

Select this component when driving AC inductive loads such as universal motors or electro valves. The 5 mA gate sensitivity allows for efficient interface with low-power logic controllers. Consider thermal resistance requirements based on the chosen mounting configuration and ambient temperature conditions.

Part Context

This part belongs to the T4 series of 4 A Triacs, which includes variants with different voltage ratings (600 V, 700 V, 800 V) and gate sensitivities (5 mA, 10 mA, 35 mA). The T405-800H specifically combines the 4 A current rating with the highest voltage option in this sub-series.

Replacement Considerations

Compatible substitutes within the same family include T405-600H and T405-700H. These parts share identical electrical characteristics and pinouts but differ only in their maximum repetitive peak off-state voltage ratings.