STMicroelectronics T410-600T

Overview

T410-600T from STMicroelectronics is a 4 A, 600 V three-quadrant logic-level triac in TO-220AB package, designed for AC phase control of inductive loads. It features 10 mA max gate trigger current (IGT), 15 mA max holding current (IH), and 25 mA max latching current (IL), enabling direct drive from microcontrollers without external amplification. Used in universal motor speed control for power tools and kitchen appliances.

For engineers reviewing the T410-600T datasheet, T410-600T pinout, T410-600T application, or T410-600T equivalent, key selection criteria include commutation robustness (dV/dt ≥ 40 V/µs at 125 °C), snubberless operation on inductive loads, thermal resistance (Rth(j-c) = 2.6 °C/W), and compatibility with zero-crossing or random-phase AC control topologies.

Technical Context

The T410-600T employs ST's Snubberless logic-level triac architecture, supporting reliable turn-on in quadrants I, II, and III with low IGT (≤10 mA) and high dV/dt immunity (40 V/µs min at 125 °C). Its dynamic resistance (Rd ≤ 120 mΩ) and on-state voltage (VTM ≤ 1.56 V at 5.5 A) ensure low conduction losses during full-sine AC switching.

Thermal design is enabled by a junction-to-case thermal resistance of 2.6 °C/W (TO-220AB, Tc = 110 °C), supporting 4 A RMS continuous current. The device operates across -40 to +125 °C junction temperature range and meets UL94 V0, halogen-free, and lead-free ECOPACK® requirements.

Key Specifications

Pinout & Package

TO-220AB package: insulated or non-insulated variant, 3-terminal through-hole mounting, tab-connected to MT2 terminal, rated for 2.3 g mass and 0.4–0.6 N·m mounting torque.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BT139-600E, T410-600T eliminates gate driver overhead and improves system integration; compared with T410-600B, it delivers 27× lower thermal resistance, enabling full 4 A RMS operation in industrial motor control with standard TO-220 heatsinks.

Availability

T410-600T is available at Aetrix Electronics and suitable for power tools, kitchen appliances, and dishwasher control systems requiring stable component supply, long-lifecycle support, and certified halogen-free manufacturing.

Supply support for T410-600T 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, digital, and mixed-signal ICs for automotive, industrial, and consumer markets.

The T4 series triacs are part of ST's power discrete portfolio, engineered specifically for robust, snubberless AC phase control in cost-sensitive, high-volume home appliance and power tool applications.

FAQ

Is T410-600T compatible with zero-crossing trigger circuits?

Yes - T410-600T supports zero-crossing operation due to its guaranteed dV/dt immunity (≥40 V/µs at 125 °C) and low IGT (≤10 mA), allowing reliable turn-on precisely at voltage zero without false triggering from line noise or transients.

What is the maximum allowable case temperature for continuous 4 A RMS operation?

The datasheet specifies IT(rms) = 4 A at Tc = 110 °C for TO-220AB packages. Exceeding this case temperature requires linear derating per Figure 2; sustained operation above 110 °C risks exceeding the 125 °C max junction temperature limit.

Does T410-600T require a heatsink in typical power tool applications?

Yes - with Rth(j-c) = 2.6 °C/W and conduction loss ~6.2 W at 4 A (VTM × IT), a heatsink maintaining Tc ≤ 110 °C is mandatory. Typical aluminum extrusion heatsinks (e.g., 5 cm² surface area) are sufficient for intermittent duty cycles.

Can T410-600T replace T410-600H in an IPAK-based design?

No - T410-600H uses IPAK packaging (Rth(j-c) = 1.5 °C/W, different footprint and thermal pad layout), while T410-600T uses TO-220AB. Mechanical and thermal interfaces are incompatible; board redesign and thermal validation are required for substitution.