STMicroelectronics T2035H-6G-TR

Overview

T2035H-6G-TR from STMicroelectronics is a 20 A, 600 V snubberless triac in D²PAK surface-mount package, designed for high-power AC switching in universal motor control. It delivers 35 mA gate trigger current (IGT), supports 150 °C junction operation, and features 1.0 °C/W junction-to-case thermal resistance with internal ceramic insulation rated at 2500 VRMS - enabling compact SMD-based vacuum cleaner and washing machine drum motor drives.

For engineers reviewing the T2035H-6G-TR datasheet, T2035H-6G-TR pinout, T2035H-6G-TR application, or T2035H-6G-TR equivalent, key selection criteria include its 1000 V/µs dV/dt immunity at 150 °C, 27 A/ms critical commutation di/dt without snubber, low on-state voltage (1.5 V max at 28 A), and RoHS-compliant, UL-certified (E81734) construction for industrial-grade reliability.

Technical Context

This H-series triac operates across all three quadrants with symmetrical triggering and robust turn-off commutation up to 150 °C junction temperature. Its internal ceramic pad provides galvanic isolation between MT1/MT2 and heatsink, eliminating need for insulating washers in TO-220AB-insulated variants - though the D²PAK variant relies on PCB layout for isolation.

The device uses clip-bonding for low thermal resistance and achieves 265 A²s I²t rating with 200 A non-repetitive surge current (50 Hz, 20 ms). Its 100 A/µs critical di/dt at 25 °C and 27 A/ms at 150 °C enable reliable commutation in high-inductance motor loads without external snubbers.

Key Specifications

Pinout & Package

D²PAK (TO-263) surface-mount package with isolated tab; thermally efficient clip-bonded die structure and internal ceramic insulation layer between die and tab. Tab is electrically connected to MT2 terminal.

Key Features

Applications

Equivalent & Alternatives

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

Compared with T2035H-6T, the -6G-TR enables automated SMD assembly and eliminates insulator hardware; versus T2050H-6G-TR, it offers lower gate drive burden at the cost of slightly reduced noise margin - making it optimal for microcontroller-driven, cost-sensitive motor controls.

Availability

T2035H-6G-TR is available at Aetrix Electronics and suitable for vacuum cleaner motor control, washing machine drum drives, and power tool speed regulation requiring stable component supply and tape-and-reel packaging for automated SMT lines.

Supply support for T2035H-6G-TR 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, MCU, and sensor solutions for industrial, automotive, and consumer markets.

This triac belongs to ST's H-series snubberless AC switch product line, engineered specifically for high-reliability, high-power-density universal motor control in white goods and power tools - emphasizing thermal robustness, commutation safety, and regulatory compliance.

FAQ

Is T2035H-6G-TR compatible with standard D²PAK footprints?

Yes - it uses the JEDEC-standard D²PAK (TO-263) outline with 2.54 mm lead pitch and 10.00 × 10.28 mm body dimensions. The recommended footprint (per DS5314 Rev 6, Figure 15) specifies 8.90 mm pad length, 3.70 mm width, and 5.08 mm centerline spacing - matching common SMT stencil and reflow profiles.

What is the maximum allowable case temperature for continuous 20 A operation?

Per Figure 2 in DS5314 Rev 6, the D²PAK package supports 20 A RMS at TC = 128 °C. For sustained operation, heatsink design must maintain case temperature ≤128 °C - achievable with ≥10 cm² 2 oz copper pour and forced airflow or moderate heatsink attachment.

Does T2035H-6G-TR require a heat sink in typical motor control applications?

Yes - even with 1.0 °C/W Rth(j-c), 20 A operation at 1.5 V on-state drop yields ~30 W dissipation. Without a heatsink, junction temperature would exceed 150 °C within seconds. A minimum 10 cm² copper pour or small extruded aluminum heatsink is required for continuous duty.

Can T2035H-6G-TR replace older T2035-600 triacs in existing designs?

Yes - it matches the 20 A/600 V rating and shares identical gate sensitivity (35 mA IGT), but adds snubberless operation, 150 °C rating, and D²PAK packaging. Layout changes are needed for SMD mounting, and thermal validation is required due to different Rth(j-a) characteristics.