T410-400T

Overview

The T410-400T is a logic-level triac manufactured by STMicroelectronics, rated for 4 A RMS on-state current and 400 V repetitive peak off-state voltage. It utilizes Snubberless technology to ensure high commutation performance with inductive loads. Key electrical parameters include a maximum gate trigger current of 10 mA, a holding current of 15 mA, and a non-repetitive surge current rating of 31 A. The device operates within a junction temperature range of -40°C to +125°C and features a peak on-state voltage of 1.56 V.

Feature Summary

• Logic-level sensitivity allows direct drive from microcontrollers or optocouplers without additional amplification.
• Snubberless design eliminates the need for external RC snubber networks across the main terminals.
• High commutation capability ensures reliable switching when controlling AC inductive loads.

Applications

• Universal motor speed control
• Electro-valve actuation
• Kitchen appliance power regulation

Procurement Notes

Verify the specific suffix 'T' indicates the TO-220 package variant during procurement. Confirm that the 400V rating aligns with the system's peak line voltage requirements. Ensure the gate trigger specifications match the driving circuit capabilities to guarantee reliable turn-on under all operating conditions.

Selection Notes

Select this component when low gate drive power is required for 4A applications. The 400V rating suits lower voltage AC systems compared to the 600V or 800V variants in the T410 series. Verify thermal management needs as the TO-220 package requires adequate heatsinking for continuous 4A operation at elevated ambient temperatures.

Part Context

This part belongs to the T410 series of logic-level triacs from STMicroelectronics. The series shares common Snubberless technology and 4A current ratings, differentiated primarily by their voltage blocking capabilities (400V, 600V, 800V) and package options. It serves as a core switching element in AC power control circuits.

Replacement Considerations

Direct substitutes within the same family include T410-600T and T410-800H, provided the higher voltage ratings are acceptable. Other manufacturers offering 4A logic triacs in TO-220 packages may require verification of gate trigger characteristics and thermal resistance values.