STMicroelectronics T3050H-6G

Overview

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

For engineers reviewing the T3050H-6G datasheet, T3050H-6G pinout, T3050H-6G application, or T3050H-6G equivalent, this device supports thermally demanding designs requiring high commutation capability, low thermal resistance (Rth(j-c) = 0.8 °C/W), and reinforced insulation (2500 VRMS) in compact surface-mount form.

Technical Context

This triac uses ST's Snubberless technology to guarantee minimum commutation performance and high electrical noise immunity across all three quadrants up to 150 °C junction temperature. Its internal ceramic pad provides 2500 VRMS isolation between A2 and heatsink, and its low dynamic resistance (15 mΩ at Tj = 150 °C) minimizes conduction loss under high RMS current.

The device sustains non-repetitive surge currents up to 284 A (60 Hz, 16.7 ms) and exhibits critical rate of rise of on-state current (dl/dt) ≥ 50 A/µs at Tj = 150 °C with IG = 2×IGT. Its dV/dt immunity remains ≥1500 V/µs at maximum junction temperature, eliminating false triggering in noisy inductive environments.

Key Specifications

Pinout & Package

D²PAK (TO-263) package: surface-mount, single-ended tab (A2), exposed metal pad for thermal and electrical connection to PCB copper pour or heatsink. UL certified (E81734), RoHS compliant, halogen-free molding compound.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-current snubberless triac applications.

Compared with BTB36-600CW and Z0103MN600DA, T3050H-6G uniquely combines 30 A SMT packaging, 0.8 °C/W thermal resistance, and 1500 V/µs dV/dt immunity - making it the only viable option for space-constrained, high-noise, high-temperature industrial motor control where reliability and component count reduction are critical.

Availability

T3050H-6G is available at Aetrix Electronics and suitable for power tool motor control, washing machine drum drives, and industrial HVAC blower systems requiring stable component supply, long-lifecycle support, and RoHS/UL-compliant sourcing.

Supply support for T3050H-6G 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.

T3050H-6G belongs to ST's H-series snubberless triac product line, engineered specifically for high-temperature, high-noise AC load switching in appliances and industrial equipment - prioritizing thermal robustness, electrical immunity, and system-level reliability over cost-optimized general-purpose switching.

FAQ

What is the maximum junction temperature for continuous operation of T3050H-6G?

The T3050H-6G is rated for continuous operation from –40 °C to +150 °C junction temperature. Its electrical characteristics - including dV/dt immunity (≥1500 V/µs), IGT (≤50 mA), and VT (≤1.55 V) - are fully specified and guaranteed at Tj = 150 °C, enabling use in sealed, high-ambient-temperature enclosures without thermal derating.

Can T3050H-6G be used without a heatsink in low-duty-cycle applications?

No. Even at low duty cycles, the D²PAK package requires a minimum copper pour area (≥2 cm²) per Figure 13, as Rth(j-a) is 45 °C/W in free air. For 30 A RMS operation, junction temperature will exceed 150 °C without thermal interface to PCB copper or an external heatsink - risking premature failure.

Does T3050H-6G require a snubber circuit for inductive loads?

No. As a Snubberless triac, T3050H-6G guarantees commutation performance across all three quadrants at 150 °C without external RC snubbers. This is validated per IEC 61000-4-4 and confirmed in DS6689 Figure 7–10 - though layout best practices (short gate traces, ground plane) remain essential for noise immunity.

What is the creepage and clearance distance achieved with the D²PAK package?

The D²PAK package itself does not define creepage/clearance; those are system-level PCB design parameters. However, the device's 2500 VRMS A2-to-tab isolation (per UL file E81734) enables designs meeting ≥4 mm creepage/clearance for basic insulation at 230 VAC mains - provided PCB layout follows IPC-2221B Class B guidelines and maintains minimum 2.5 mm solder mask gaps around the tab.