STMicroelectronics T810-600B

Overview

T810-600B from STMicroelectronics is a logic-level, snubberless 8 A triac in DPAK package, rated for 600 V repetitive peak off-state voltage (VDRM/VRRM), with 10 mA maximum gate trigger current (IGT) and 1.55 V max on-state voltage (VTM) at 11 A. It enables direct microcontroller-driven AC switching in phase-control dimmers and motor speed controllers handling inductive loads.

For engineers reviewing the T810-600B datasheet, T810-600B pinout, T810-600B application, or T810-600B equivalent, key selection criteria include its snubberless commutation performance (dV/dt = 400 V/µs), low IGT compatibility with 3.3 V logic, and DPAK thermal resistance (Rth(j-c) = 1.6 °C/W) for compact board designs.

Technical Context

This triac operates in three quadrants (I, II, III) with logic-level sensitivity-guaranteed IGT ≤ 10 mA at VD = 12 V and RL = 30 Ω-and features high commutation robustness for inductive loads without external snubbers. Its dV/dt rating of 400 V/µs (min) and critical rate of decrease of main current (dl/dt)c ≥ 5.4 A/ms ensure reliable turn-off under reactive load conditions.

Designed for zero-crossing or phase-angle control, it supports full-sine-wave RMS currents up to 8 A at case temperature TC = 110 °C, with junction-to-case thermal resistance of 1.6 °C/W and on-state dynamic resistance (RD) ≤ 50 mΩ at Tj = 125 °C-enabling efficient power handling in space-constrained PCB layouts.

Key Specifications

Pinout & Package

DPAK (TO-252) surface-mount package with insulated tab, halogen-free molding compound (UL94 V0), lead-free plating, and footprint optimized for FR4 PCB with 35 µm copper thickness.

Key Features

Applications

Equivalent & Alternatives

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

Compared with T810-600B, BTA08-600SW trades PCB area for mechanical robustness and isolation, while T835-600B sacrifices logic-level drive simplicity for extreme dV/dt resilience-making T810-600B optimal for MCU-integrated, space-constrained, inductive-load AC control.

Availability

T810-600B is available at Aetrix Electronics and suitable for light dimming, motor speed control, heating regulation, and static relay replacement requiring stable component supply across industrial, appliance, and building automation programs.

Supply support for T810-600B 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 sensing solutions for industrial, automotive, and consumer markets.

T810-600B belongs to ST's Snubberless Logic-Level Triac product line, engineered specifically for direct microcontroller-driven AC power control in compact, thermally constrained, inductive-load applications.

FAQ

What is the maximum junction temperature for continuous operation of T810-600B?

The T810-600B has an operating junction temperature range of –40 °C to +125 °C. Continuous operation at Tj = 125 °C is permitted when case temperature is maintained at TC = 110 °C per absolute maximum ratings, with thermal design ensuring Rth(j-c) × Pd ≤ 15 °C margin.

Does T810-600B require a heatsink in a typical 8 A application?

A heatsink is not mandatory if PCB copper area provides sufficient thermal conduction: 1 cm² of 35 µm copper under the DPAK tab yields Rth(j-a) ≈ 70 °C/W, limiting usable power to ~1.1 W at ΔT = 75 °C. For full 8 A RMS operation, a small clip-on heatsink or extended copper pour is recommended to maintain TC ≤ 110 °C.

Can T810-600B replace a standard 4-quadrant triac in existing designs?

Yes, but only in circuits where gate triggering occurs exclusively in quadrants I, II, or III-T810-600B does not support quadrant IV triggering. Verify existing gate drive polarity and timing; if quadrant IV operation is used, BTA08-600C (4Q, 35 mA IGT) is the appropriate drop-in alternative.

Is the DPAK tab of T810-600B electrically insulated?

No-the DPAK package of T810-600B has a non-insulated tab directly connected to A2. For voltage-isolated mounting, use BTA08-600SRG (TO-220AB insulated, 2500 VRMS rating) or add insulating hardware and verify creepage/clearance per IEC 61800-5-1.