T405-600T

Overview

The T405-600T is a 4A logic level triac manufactured by STMicroelectronics, designed for AC inductive load control. It features a TO-220 through-hole package with three pins. Key electrical parameters include a maximum repetitive peak off-state voltage of 600V and an RMS on-state current rating of 4A. The device supports a surge current of 31A and operates within a junction temperature range of -40°C to +125°C. Gate triggering characteristics specify a maximum gate trigger current (Igt) of 5mA and a maximum gate trigger voltage (Vgt) of 1.3V. Additional specifications include a holding current of 10mA, a peak on-state voltage of 1.56V, and a non-repetitive peak off-state current of 5μA.

Feature Summary

• Logic level technology enabling direct drive from microcontrollers or low-power logic circuits without additional buffer components.
• Snubberless design optimized for high commutation performance when switching AC inductive loads.
• Three-quadrant triggering capability ensuring reliable operation across various gate signal polarities.

Applications

• Universal motor speed control in power tools and kitchen appliances
• Electro-valve actuation systems
• Dishwasher and home appliance control circuits

Procurement Notes

Verify the specific suffix 'T' confirms the TO-220 through-hole package variant distinct from surface-mount options like 'B'. Confirm RoHS compliance status and check for any recent production change notices that may affect pin compatibility or thermal characteristics before finalizing procurement orders.

Selection Notes

Select this component when a 4A RMS current rating and 600V blocking voltage are required for through-hole assembly. Ensure the application involves AC inductive loads where the snubberless feature provides commutation benefits. Verify that the 5mA gate trigger current matches the driving circuit's output capability for reliable turn-on.

Part Context

This part belongs to the T4 series of logic level triacs from STMicroelectronics. The series utilizes proprietary Snubberless technology to simplify circuit design for AC switches. The T405-600T specifically denotes the 600V voltage rating and 4A current capacity within the standard TO-220 form factor, distinguishing it from higher voltage or different package variants in the same family.

Replacement Considerations

Consider the T405-600B for surface-mount applications requiring identical electrical characteristics but in a DPAK/TO-252 package. For through-hole alternatives with similar specs, verify compatibility with other manufacturers' 4A 600V logic-level triacs, ensuring gate trigger currents remain within acceptable limits.