UMW BTA16-600BRG

Overview

BTA16-600BRG from STMicroelectronics is an insulated, 16 A, 600 V RMS snubberless triac in TO-220AB Insulated package, designed for AC mains switching in inductive load applications. It delivers 50 mA gate trigger current (IGT), 2500 VRMS isolated tab rating per UL1557, and 400 V/µs critical dV/dt at 125 °C - enabling robust commutation in motor speed controllers and static relays without external snubbers.

For engineers reviewing the BTA16-600BRG datasheet, BTA16-600BRG pinout, BTA16-600BRG application, or BTA16-600BRG equivalent, key selection criteria include insulated thermal interface capability, 3-quadrant snubberless operation, gate sensitivity for microcontroller-driven triggering, and compliance with UL1557 and RoHS 2002/95/EC.

Technical Context

This triac operates in three quadrants (I, III, IV) with optimized gate structure for low IGT (50 mA max) and high commutation robustness. Its internal ceramic insulation enables direct heatsink mounting without isolation hardware while maintaining 2500 VRMS dielectric strength between tab and MT1/MT2 terminals.

The device features a 1.2 °C/W junction-to-case thermal resistance (TO-220AB Ins.), 2.1 °C/W R_th(j-c) for insulated variant, and supports repetitive surge currents up to 160 A (50 Hz, 20 ms). Critical dV/dt exceeds 400 V/µs at T_j = 125 °C with gate open - essential for reliable turn-off under inductive flyback conditions.

Key Specifications

Pinout & Package

Package: TO-220AB Insulated - epoxy-encapsulated power package with internal ceramic isolation pad between copper tab and semiconductor die. Tab is electrically isolated and rated for 2500 VRMS; mounting screw torque: 0.55 N·m (recommended), max 0.70 N·m.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BTB16-600BW, BTA16-600BRG eliminates mechanical isolation hardware and reduces thermal interface resistance uncertainty; versus T1650-600G, it provides certified reinforced insulation out-of-the-box but requires through-hole assembly and larger footprint.

Availability

BTA16-600BRG is available at Aetrix Electronics and suitable for industrial motor control, light dimming systems, static power relays, and appliance heating control requiring stable component supply, UL-certified insulation, and long-term lifecycle continuity.

Supply support for BTA16-600BRG 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, specializing in power management, analog, MCU, and discrete devices for industrial, automotive, and consumer markets.

The BTA series belongs to ST's high-reliability power discrete portfolio, engineered specifically for robust AC mains switching in safety-critical industrial controls and white goods - emphasizing insulation integrity, commutation immunity, and thermal performance.

FAQ

What is the maximum junction temperature for continuous operation?

The BTA16-600BRG has a specified operating junction temperature range of –40 °C to +125 °C. For continuous 16 A RMS conduction, case temperature must be maintained ≤86 °C per datasheet derating curves - requiring appropriate heatsinking to limit thermal resistance from junction to ambient.

Can this triac replace a non-insulated triac in an existing design?

Yes, but only if the original design does not rely on tab conduction for electrical reference. The insulated tab is floating - MT1 must serve as gate reference. Mechanical mounting differs: no insulating hardware is needed, but thermal paste application and torque control (0.55 N·m) remain critical for thermal performance.

Does the "R" in BTA16-600BRG indicate RoHS compliance?

No - the "R" denotes tube packaging (as per ST's ordering scheme). RoHS compliance is inherent to all BTA16 variants per ECOPACK® specifications; confirmation is found in ST's official product status documentation and material declarations, not the part suffix.

What gate drive circuit is recommended for microcontroller interfacing?

A zero-crossing optocoupler such as the MOC3041 (6-pin DIP, 600 V blocking) is recommended. It provides galvanic isolation, delivers ≥70 mA peak gate current, and triggers only near voltage zero-crossings - minimizing EMI and stress on the BTA16-600BRG during turn-on.