STMicroelectronics T1610T-8G

Overview

T1610T-8G from STMicroelectronics is a logic-level, three-quadrant triac in D²PAK surface-mount package, rated for 16 A RMS on-state current and 800 V repetitive peak off-state voltage (VDRM/VRRM), with 10 mA gate trigger current (IGT) enabling direct MCU control. It supports phase-angle and on/off AC switching for resistive loads up to 150 °C junction temperature, and delivers 900 V non-repetitive surge capability (VDSM/VRSM) for overvoltage crowbar protection.

For engineers reviewing the T1610T-8G datasheet, T1610T-8G pinout, T1610T-8G application, or T1610T-8G equivalent, key selection criteria include its low IGT for simplified drive, extended thermal margin to 150 °C, high commutation robustness on resistive loads, and D²PAK package suitability for automated SMT assembly in compact power control designs.

Technical Context

The T1610T-8G operates as a bidirectional AC switch with three-quadrant triggering (Quadrants I, II, III), supporting both leading- and trailing-edge phase control. Its gate threshold voltage (VGT ≤ 1.3 V) and low IGT (≤ 10 mA) allow direct interface with 3.3 V or 5 V microcontrollers without external amplification.

Thermal performance is defined by Rth(j–c) = 1.15 °C/W (junction-to-case), enabling 16 A RMS conduction at Tc = 126 °C. Electrical robustness includes dV/dt ≥ 100 V/µs (Tj = 125 °C) and critical rate of rise of on-state current (dl/dt) ≥ 100 A/µs, ensuring reliable turn-on under fast transient conditions.

Key Specifications

Pinout & Package

The T1610T-8G uses the D²PAK (TO-263) surface-mount package with exposed metal tab for thermal and electrical connection. The molded compound is halogen-free and UL94 V0 rated; RoHS and Ecopack2 compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BTB16-800CW and T1635T-8G, the T1610T-8G uniquely combines D²PAK SMT compatibility, 10 mA IGT for direct MCU interfacing, and three-quadrant operation-reducing system-level EMI filtering and board space while maintaining full 16 A/800 V capability.

Availability

T1610T-8G is available at Aetrix Electronics and suitable for home appliance motor control, AC inrush current limiting, and hybrid solid-state relay designs requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for T1610T-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, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.

The T-series triac product line targets EMI-sensitive, space-constrained AC power control applications-emphasizing low gate drive, three-quadrant operation, and robust surge handling for smart appliances and industrial automation.

FAQ

Is the T1610T-8G compatible with 3.3 V microcontrollers?

Yes. With a maximum gate trigger voltage (VGT) of 1.3 V and gate trigger current (IGT) of 10 mA, the T1610T-8G can be directly driven by 3.3 V GPIO pins using a series resistor (e.g., 220 Ω) to limit peak gate current to <4 A. No level-shifting or buffer stage is required under standard operating conditions.

What is the minimum copper pad area needed for thermal performance?

The datasheet specifies a typical Rth(j–a) of 45 °C/W with a 2 cm² copper pad (35 µm thickness, FR4). For full 16 A RMS operation at Tc = 126 °C, a minimum 8.9 mm × 10.3 mm (≈92 mm²) thermal pad is recommended per Figure 15, with solder mask opening matching the tab outline to maximize thermal conduction.

Can the T1610T-8G replace a four-quadrant triac in an existing design?

Yes, but gate drive timing must be verified. As a three-quadrant device, it does not trigger in Quadrant IV (A2 negative, G positive). If the original design relies on QIV triggering-such as certain snubberless dimmer topologies-the T1610T-8G may require firmware or circuit modification to avoid missed triggers during specific half-cycles.

Does the D²PAK package require thermal vias under the tab?

Thermal vias are strongly recommended. While the D²PAK tab conducts heat primarily to the copper pad, adding ≥6 thermal vias (0.3 mm diameter, filled or capped) beneath the tab significantly reduces Rth(j–a) - improving ambient temperature derating and enabling higher sustained current in free-air conditions per Figure 3.