STMicroelectronics T810T-8G-TR

Overview

T810T-8G from STMicroelectronics is a logic-level, 8 A RMS, 800 V repetitive peak voltage triac in D²PAK surface-mount package, designed for phase-angle and on/off AC switching of resistive loads. It features 10 mA gate trigger current (IGT), 150 °C maximum junction temperature, and 900 V non-repetitive surge capability (VDSM/VRSM), enabling direct MCU control and robust overvoltage crowbar protection in compact SMT designs.

For engineers reviewing the T810T-8G datasheet, T810T-8G pinout, T810T-8G application, or T810T-8G equivalent, key selection criteria include gate sensitivity (10 mA IGT), thermal margin (150 °C Tj), commutation robustness (100 A/µs dl/dt), and D²PAK thermal resistance (1.9 °C/W Rth(j-c)).

Technical Context

This T-series triac operates across all three quadrants (I, II, III) with guaranteed triggering at ≤10 mA IGT and ≤1.3 V VGT, supporting simplified gate drive without external amplification. Its high dV/dt immunity (≥250 V/µs at 125 °C) and critical di/dt capability (≥6 A/ms at 125 °C) ensure reliable commutation under noisy AC line conditions.

The device integrates optimized snubberless operation via enhanced dv/dt and di/dt ruggedness, reducing external component count in hybrid relay and inrush limiting circuits. Its D²PAK package delivers low thermal resistance (Rth(j-c) = 1.9 °C/W) and halogen-free UL94 V0 molding, meeting ECOPACK2 environmental compliance.

Key Specifications

Pinout & Package

D²PAK (TO-263) surface-mount package with exposed tab for thermal conduction and mechanical anchoring. Molding compound is halogen-free and UL94 V0 rated; ECOPACK2 compliant (RoHS + Halogen Free).

Key Features

Applications

Equivalent & Alternatives

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

Compared with BTA08-600BWRG and T810T-8G-TR, the T810T-8G offers the optimal balance of low gate drive demand, 800 V blocking, and D²PAK thermal efficiency-making it ideal for next-generation smart appliance controllers where board space and thermal management are constrained.

Availability

T810T-8G is available at Aetrix Electronics and suitable for general-purpose AC line load switching, small home appliances with resistive loads, and hybrid relay implementations requiring stable component supply, long-term manufacturability, and RoHS-compliant sourcing.

Supply support for T810T-8G 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 T-series triac product line targets high-EMI AC control applications, emphasizing snubberless operation, logic-level gate sensitivity, and robust thermal performance in surface-mount packages for automated manufacturing.

FAQ

What is the maximum junction temperature rating for the T810T-8G?

The T810T-8G has a maximum operating junction temperature of +150 °C, validated per absolute maximum ratings in DS13366 Rev 2. This rating enables extended thermal margin in enclosed or high-ambient environments, supported by its 1.9 °C/W junction-to-case thermal resistance and D²PAK package construction.

Can the T810T-8G be driven directly from a 3.3 V microcontroller GPIO?

Yes - the T810T-8G guarantees gate trigger current (IGT) ≤10 mA at VD = 12 V and RL = 30 Ω, and typical IGT is as low as 0.5 mA at 25 °C. With appropriate current-limiting resistor (e.g., 330 Ω), a 3.3 V MCU GPIO can reliably trigger conduction without external buffer stages.

Does the T810T-8G require an external snubber circuit?

No - the T810T-8G is a snubberless triac with minimum dV/dt immunity of 250 V/µs at 125 °C and 170 V/µs at 150 °C. These values exceed typical requirements for 230 VAC/50 Hz applications, allowing elimination of external RC snubbers in most resistive and lightly inductive loads.

What is the difference between VDRM/VRRM and VDSM/VRSM ratings?

VDRM/VRRM (800 V) is the maximum repetitive peak off-state voltage the device blocks continuously during normal operation. VDSM/VRSM (900 V) is the non-repetitive peak voltage it withstands for short durations (e.g., 10 ms), used for surge and crowbar protection - not for continuous duty.