STMicroelectronics T1035H-6G

Overview

T1035H-6G from STMicroelectronics is a 10 A, 600 V Snubberless™ Triac in D2PAK package, designed for high-temperature AC mains switching with guaranteed 150 °C junction turn-off commutation, 35 mA max gate trigger current (IGT), and 50 A/µs critical dI/dt rating. It enables compact motor control in vacuum cleaners and washing machine drum drives by reducing heatsink size versus conventional triacs.

For engineers reviewing the T1035H-6G datasheet, T1035H-6G pinout, T1035H-6G application, or T1035H-6G equivalent, key selection criteria include its 150 °C thermal capability, 1000 V/µs dV/dt immunity at 150 °C, low 34 mΩ dynamic resistance at Tj = 150 °C, and RoHS-compliant D2PAK thermal performance (Rth(j-c) = 1.45 °C/W).

Technical Context

This triac operates in all three quadrants without external snubbers, leveraging internal ceramic insulation rated at 2500 V_rms and optimized clip-bonding for low thermal resistance. Its 13 A/ms minimum commutation dI/dt (at Tj = 150 °C) supports reliable zero-crossing and phase-angle control in universal motor loads.

The device features a threshold voltage (Vt0) of ≤0.80 V and dynamic resistance (Rd) ≤34 mΩ at 150 °C, enabling low conduction loss under high RMS current (10 A at Tc = 135 °C). Leakage remains ≤3.6 mA at 150 °C and 400 V blocking, supporting stable operation in thermally constrained environments.

Key Specifications

Pinout & Package

D2PAK (TO-263) package with isolated copper tab, UL certified (E81734), RoHS compliant, and ECOPACK® qualified. Thermal pad requires soldered mounting for optimal Rth(j-c) = 1.45 °C/W performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BTB10-600CW and T1035H-6T, the T1035H-6G uniquely combines D2PAK space efficiency, 150 °C thermal robustness, and integrated 2500 V_rms isolation-enabling single-component compliance in Class II portable appliances without layout compromises.

Availability

T1035H-6G is available at Aetrix Electronics and suitable for vacuum cleaner motor control, washing machine drum drives, industrial fan regulators, and power tool trigger circuits requiring stable component supply across high-volume consumer appliance production.

Supply support for T1035H-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, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.

The T1035H-6G belongs to ST's Snubberless™ Triac product line, engineered specifically for high-power-density AC motor control in thermally constrained, safety-critical white goods and power tools.

FAQ

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

The T1035H-6G supports 10 A RMS continuous operation at Tc = 135 °C in D2PAK package, as specified in Table 2 of the datasheet. Derating begins above this point; at Tc = 150 °C, maximum IT(RMS) drops to approximately 8.5 A per Figure 2. Thermal design must ensure case temperature stays within this limit under worst-case ambient and airflow conditions.

Does the T1035H-6G require an external snubber circuit?

No. The T1035H-6G is a Snubberless™ triac with internally optimized structure for high dI/dt and dV/dt immunity. It operates reliably without external RC snubbers in universal motor and resistive loads, as confirmed by ST's characterization data showing ≥13 A/ms commutation dI/dt and ≥1000 V/µs dV/dt at 150 °C junction temperature.

How is the 2500 V_rms isolation implemented, and what safety standards does it satisfy?

The 2500 V_rms isolation is achieved via an internal ceramic pad between the die and the D2PAK metal tab, providing reinforced insulation. This construction meets UL recognition file E81734 and supports double-insulation requirements in Class II appliances per IEC 60335-1, eliminating need for additional creepage/clearance barriers on the PCB.

Can the T1035H-6G be used in zero-crossing switching applications?

Yes. The device supports reliable zero-crossing operation due to its high dV/dt immunity (≥1000 V/µs at 150 °C) and low gate trigger current (35 mA max), allowing clean turn-on near voltage zero with minimal EMI. However, for precise timing, gate drive must be synchronized to the AC zero-crossing point using an external detector circuit.