STMicroelectronics T410-600W

Overview

T410-600W from STMicroelectronics is a 4 A, 600 V three-quadrant logic-level triac designed for AC inductive load switching in universal motor control, electrovalves, and small home appliances. It features 10 mA maximum gate trigger current (IGT), 15 mA maximum holding current (IH), and 25 mA maximum latching current (IL) at 25 °C, enabling direct microcontroller drive without external amplification.

For engineers reviewing the T410-600W datasheet, T410-600W pinout, T410-600W application, or T410-600W equivalent, this device is selected for snubberless operation in 50/60 Hz AC mains circuits requiring high commutation robustness, low IGT sensitivity, and thermal stability up to 125 °C junction temperature.

Technical Context

The T410-600W employs ST's Snubberless logic-level triac architecture, supporting reliable turn-on across all four quadrants with gate trigger current as low as 10 mA (max). Its dV/dt immunity reaches 40 V/µs at 125 °C, eliminating need for external snubbers in typical inductive loads.

It delivers 4 A RMS on-state current with 1.56 V max on-state voltage (VTM) at 5.5 A and 25 °C, and sustains non-repetitive surge current of 31 A (60 Hz, 16.7 ms). Thermal resistance is 2.6 °C/W (junction-to-case) in TO-220AB package, enabling stable operation at Tc = 110 °C.

Key Specifications

Pinout & Package

Package: TO-220AB (non-insulated, 3-pin through-hole). Standard mounting with tab electrically connected to MT2 terminal. Recommended torque: 0.4–0.6 N·m.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar triac-based AC switching applications.

Compared with T410-600W, the T410-600B offers identical electrical performance in a smaller footprint but demands careful thermal pad design, while Q4010LH5 trades lower gate sensitivity and reduced dV/dt immunity for broader distributor availability and long-term supply continuity.

Availability

T410-600W is available at Aetrix Electronics and suitable for universal motor control, electrovalve actuation, and kitchen appliance heating requiring stable component supply, consistent parametric performance, and long-lifecycle support.

Supply support for T410-600W includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, power, microcontroller, and sensor solutions for industrial, automotive, and consumer markets.

The T4 series triacs belong to ST's high-reliability AC power switching product line, engineered specifically for snubberless, logic-level operation in cost-sensitive, thermally demanding home appliance and power tool applications.

FAQ

Is T410-600W compatible with zero-crossing SSR drivers?

No - T410-600W is a bare triac requiring external gate timing control. It lacks integrated zero-crossing detection or driver circuitry. To implement zero-crossing switching, it must be paired with a dedicated zero-crossing detector IC (e.g., MOC3041) and appropriate current-limiting resistor network to deliver gate pulses precisely at voltage zero crossings.

What is the minimum gate resistor value when driving T410-600W from a 5 V MCU GPIO?

For reliable triggering at 25 °C, use R_G ≤ 470 Ω: With 5 V supply and 10 mA max IGT, Ohm's Law gives R = (5 V − 1.3 V V_GT) / 10 mA ≈ 370 Ω; 470 Ω provides margin for V_GT variation and temperature drift. At 125 °C, IGT rises to ~1.8× typical, so 330 Ω is recommended for worst-case robustness.

Can T410-600W replace T405-600T in existing designs?

Yes, with verification - T410-600W has higher IGT (10 mA vs. 5 mA), IH (15 mA vs. 10 mA), and IL (25 mA vs. 10 mA), meaning it requires slightly more gate drive energy and holds conduction longer. Confirm gate driver can source ≥10 mA and that load timing tolerances accommodate longer hold time before turn-off.

Does T410-600W require a heatsink at 4 A RMS continuous load?

Yes - at 4 A RMS and 1.56 V V_TM, conduction loss is ~6.2 W. With R_th(j-c) = 2.6 °C/W and max T_j = 125 °C, ambient must stay below ~109 °C without heatsink - impossible in practice. A heatsink maintaining T_c ≤ 110 °C is mandatory; typical solution uses 10–15 °C/W heatsink with thermal interface material.