STMicroelectronics T810H-6G

Overview

T810H-6G from STMicroelectronics is a high-temperature, logic-level sensitive 8 A TRIAC in D2PAK package, rated for 600 V repetitive peak off-state voltage (VDRM/VRRM), with gate trigger current ≤10 mA and maximum junction temperature of 150 °C. It enables direct microcontroller port driving of AC loads in space-constrained appliance motor controls and industrial heating systems.

For engineers reviewing the T810H-6G datasheet, T810H-6G pinout, T810H-6G application, or T810H-6G equivalent, key selection criteria include its low IGT (≤10 mA), high dV/dt immunity (75 V/µs at Tj = 150 °C), thermal robustness (Rth(j-c) = 1.60 °C/W), and D2PAK footprint compatibility with high-power density PCB layouts.

Technical Context

The T810H-6G operates as a bidirectional AC switch with three-quadrant triggering capability (I, II, III), supporting full-cycle conduction control without requiring external snubbers in many resistive and inductive load applications. Its logic-level gate drive (IGT ≤10 mA, VGT ≤1.0 V) eliminates need for discrete gate driver stages.

Designed for sustained operation up to 150 °C junction temperature, it delivers enhanced commutation margin (dI/dt critical = 50 A/µs at Tj = 150 °C) and reduced on-state losses (VT ≤1.5 V at 11.3 A, Rd ≤55 mΩ at Tj = 150 °C), enabling smaller heatsinks versus standard TRIACs.

Key Specifications

Pinout & Package

D2PAK package with isolated mounting tab (A2), standard 3-pin configuration: Anode 2 (A2), Anode 1 (A1), and Gate (G). The tab is electrically connected to A2 and must be thermally anchored to PCB copper pour.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar TRIAC switching applications.

Compared with BTB16-600BW and T810H-6T, the T810H-6G uniquely combines SMT manufacturability, 150 °C junction rating, and sub-10 mA gate drive-enabling higher-density, thermally resilient, and MCU-direct AC control not achievable with either alternative.

Availability

T810H-6G is available at Aetrix Electronics and suitable for smart appliance motor control, industrial heating element switching, and multi-zone HVAC fan control requiring stable component supply across extended product lifecycles.

Supply support for T810H-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, digital, and mixed-signal ICs for automotive, industrial, and consumer markets.

The T810H series belongs to ST's high-temperature logic-level TRIAC product line, engineered specifically for direct microcontroller-driven AC load control in thermally demanding appliance and industrial equipment.

FAQ

What is the maximum allowable gate trigger pulse width for reliable turn-on?

The T810H-6G requires a minimum gate trigger pulse width of 1 µs to ensure robust turn-on across temperature and load variations. For inductive loads, ST recommends ≥10 µs pulses to guarantee commutation margin. Pulse repetition rate must stay below 1 kHz to avoid exceeding average gate power dissipation limit of 1 W at Tj = 150 °C.

Can T810H-6G replace a standard 8 A TRIAC in an existing TO-220 design?

No direct footprint replacement is possible-the T810H-6G uses D2PAK, not TO-220AB. However, its identical electrical specs (8 A, 600 V, 10 mA IGT) and superior thermal resistance (1.60 °C/W) allow redesign into denser SMT layouts. PCB layout must include thermal pad soldering and isolation clearance matching D2PAK dimensions (16.9 × 10.3 mm).

Is heatsinking required for 8 A continuous operation?

Yes-continuous 8 A RMS operation at Tc = 135 °C requires a heatsink achieving ≤1.60 °C/W junction-to-case thermal resistance. Without forced airflow, a minimum 25 cm² copper pour with 2 oz copper and thermal vias is necessary. For ambient temperatures above 70 °C, active cooling or derating to 6 A RMS is recommended per Figure 2 in the datasheet.

Does T810H-6G support three-quadrant triggering in all modes?

Yes-the device supports triggering in Quadrants I, II, and III as confirmed in Table 3 (IGT, VGT test conditions). Quadrant IV triggering is not specified or guaranteed. For microcontroller-driven phase-control, QI and QIII are typically used with positive gate pulses relative to A1, ensuring predictable turn-on timing and noise immunity.