STMicroelectronics T1050H-6G-TR

Overview

T1050H-6G-TR from STMicroelectronics is a 10 A, 600 V Snubberless™ Triac in D2PAK surface-mount package, designed for high-temperature (150 °C) AC mains switching in universal motor loads. It delivers 50 mA gate trigger current, 1500 V/µs dV/dt immunity at 150 °C junction temperature, and 18 A/ms critical commutation rate without external snubbers-enabling compact vacuum cleaner and washing machine drum motor drives.

For engineers reviewing the T1050H-6G-TR datasheet, T1050H-6G-TR pinout, T1050H-6G-TR application, or T1050H-6G-TR equivalent, key selection criteria include verified 150 °C turn-off commutation capability, low R_th(j-c) of 1.45 °C/W, and D2PAK thermal performance under sustained 10 A RMS conduction in high-power-density appliances.

Technical Context

This Triac operates in all three quadrants with guaranteed triggering up to 50 mA I_GT and maintains stable latching (I_L ≤ 90 mA) and holding (I_H ≤ 75 mA) across -40 °C to +150 °C. Its internal ceramic pad provides 2500 V_rms isolation between MT1/MT2 and heatsink.

The device achieves 1000–1500 V/µs dV/dt immunity and ≥13–18 A/ms (dI/dt)_c at T_j = 150 °C, eliminating need for snubber networks in resistive and inductive motor loads. On-state voltage is specified at 1.5 V (T_j = 25 °C) and degrades to 0.80 V threshold with 34 mΩ dynamic resistance at 150 °C.

Key Specifications

Pinout & Package

D2PAK (TO-263) surface-mount package with isolated tab; thermally efficient clip-bonded construction and UL-certified (E81734) insulation rated at 2500 V_rms.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-temperature Triac applications.

Compared with BTB12-600CW and Q6012LH4, T1050H-6G-TR uniquely combines D2PAK surface-mount compatibility, 150 °C turn-off commutation, and 2500 V_rms isolation-making it the only option for thermally dense, safety-critical, and snubber-free universal motor control.

Availability

T1050H-6G-TR is available at Aetrix Electronics and suitable for vacuum cleaner motor control, washing machine drum drive, and industrial fan speed regulation requiring stable component supply across multi-year production programs.

Supply support for T1050H-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, digital, and mixed-signal ICs for automotive, industrial, and consumer markets.

The T10xxH series belongs to ST's high-temperature Snubberless™ Triac product line, engineered specifically for compact, high-efficiency AC motor control in thermally constrained white goods and power tools.

FAQ

What is the maximum allowable case temperature for continuous 10 A RMS operation?

The datasheet specifies IT(RMS) = 10 A at Tc = 135 °C for D2PAK packages. This is measured with the case temperature maintained at 135 °C using a controlled heatsink; exceeding this value requires derating per Figure 2. Operation at 135 °C case temperature corresponds to ~150 °C junction temperature under typical thermal interface conditions.

Does T1050H-6G-TR require a heatsink in vacuum cleaner applications?

Yes-a heatsink is required, but its size can be reduced by ~35% compared to standard Triacs due to the device's 1.45 °C/W R_th(j-c) and 150 °C T_j rating. The D2PAK tab must be mounted to a thermally conductive surface with thermal interface material; minimum recommended copper area is 1 cm² per Figure 12.

Can T1050H-6G-TR replace T1035H-6G-TR in existing designs?

Yes-both share identical D2PAK package, pinout, and voltage/current ratings. The only difference is gate trigger sensitivity: T1050H requires up to 50 mA I_GT, versus 35 mA for T1035H. Existing gate drivers capable of ≥50 mA will support drop-in replacement; lower-current drivers may require verification of triggering margin.

Is the 2500 V_rms isolation rating certified for reinforced insulation?

Yes-the internal ceramic pad meets UL certification file E81734 for 2500 V_rms isolation between MT2/tab and leads, qualifying as reinforced insulation per IEC 60335-1 Annex G. This enables single-insulation-system designs in Class II appliances without additional barrier spacing.