STMicroelectronics T3050H-6G-TR

Overview

T3050H-6G-TR from STMicroelectronics is a 30 A, 600 V snubberless triac in D²PAK package, designed for high-noise industrial AC load control at up to 150 °C junction temperature. It delivers 50 mA gate trigger current, 1000 V/µs dV/dt immunity at Tj = 150 °C, and 0.80 V threshold voltage at 150 °C - enabling robust universal motor control in power tools and major appliances without external snubbers.

For engineers reviewing the T3050H-6G-TR datasheet, T3050H-6G-TR pinout, T3050H-6G-TR application, or T3050H-6G-TR equivalent, key selection criteria include its 30 A RMS rating, 600 V blocking voltage, 50 mA IGT, 150 °C max operating temperature, and D²PAK thermal resistance of 0.8 °C/W (junction-to-case), critical for heatsink-limited designs.

Technical Context

This H-series triac uses ST's Snubberless technology to guarantee specified commutation performance and noise immunity across its full 150 °C operating range. Its internal ceramic pad provides 2500 VRMS isolation, and it supports 3-quadrant triggering with validated dynamic dI/dt capability of 44 A/ms at Tj = 150 °C.

The device is optimized for inductive loads: it features low on-state resistance (15 mΩ at 150 °C), low VT (1.55 V max at 42 A, 25 °C), and high surge tolerance (284 A at 60 Hz, 16.7 ms). Thermal design is simplified by Rth(j-c) = 0.8 °C/W in D²PAK, enabling compact heatsinking versus electromechanical alternatives.

Key Specifications

Pinout & Package

D²PAK (TO-263) surface-mount package with isolated tab (A2 terminal), optimized for automated assembly and thermal performance. Tab is electrically connected to A2.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BTB32-600CW and T3050H-6T, T3050H-6G-TR uniquely combines D²PAK SMT compatibility, integrated 2500 VRMS isolation, and 0.8 °C/W thermal resistance - eliminating snubber components, reducing safety certification effort, and enabling compact, automated manufacturing.

Availability

T3050H-6G-TR is available at Aetrix Electronics and suitable for power tools, major appliances, and industrial HVAC systems requiring stable component supply, long lifecycle support, and RoHS-compliant sourcing.

Supply support for T3050H-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 microcontrollers, power devices, sensors, and analog ICs for industrial, automotive, and consumer markets.

T3050H-6G-TR belongs to ST's H-series snubberless triac product line, engineered specifically for high-temperature, high-noise AC load switching in space-constrained, safety-critical appliance and industrial equipment.

FAQ

What is the maximum junction temperature and how does it impact thermal design?

The T3050H-6G-TR is rated for continuous operation up to 150 °C junction temperature. This allows direct placement near heat sources (e.g., motor windings or cooktop elements) without derating. With Rth(j-c) = 0.8 °C/W, a 40 °C temperature rise above case requires only 50 W of dissipated power - enabling compact heatsink sizing when case temperature is managed below 110 °C.

Does this triac require an external snubber circuit?

No - the T3050H-6G-TR is a Snubberless triac. ST guarantees its commutation behavior and dV/dt immunity (1500 V/µs at 150 °C) without external RC networks. This eliminates snubber-related BOM cost, board space, and reliability risks associated with capacitor aging or resistor drift in high-temperature environments.

How is isolation achieved and what safety standards does it meet?

Isolation is provided by an internal ceramic pad between A2 and A1 terminals, rated for 2500 VRMS. This meets reinforced insulation requirements per IEC 60730-1 and IEC 60335-1 for Class I household appliances. UL certification file E81734 confirms compliance - no external isolation barriers are needed for basic or reinforced insulation schemes.

Can T3050H-6G-TR replace T3035H-6G-TR in existing designs?

Yes - both share identical D²PAK package, pinout, and voltage/current ratings. The key difference is gate sensitivity: T3035H-6G-TR has IGT ≤35 mA, while T3050H-6G-TR requires up to 50 mA. If the existing gate driver can deliver ≥50 mA, the replacement is functionally seamless and improves noise immunity (1500 vs. 1000 V/µs dV/dt at 150 °C).