UMW BTA16-600BWRG

Overview

BTA16-600BWRG from STMicroelectronics is a 16 A, 600 V RMS insulated triac in TO-220AB Ins. package, designed for snubberless AC phase control and switching in inductive mains-powered loads. It features 50 mA gate trigger current (IGT), 2500 VRMS insulated tab, and high commutation capability (dV/dt ≥ 1000 V/µs, dI/dt ≥ 14 A/ms) at 125 °C - enabling reliable operation in motor speed controllers and static relays without external snubbers.

For engineers reviewing the BTA16-600BWRG datasheet, BTA16-600BWRG pinout, BTA16-600BWRG application, or BTA16-600BWRG equivalent, key selection criteria include insulated tab voltage rating, snubberless commutation performance under inductive load stress, thermal resistance (Rth(j-c) = 2.1 °C/W), and gate sensitivity compatibility with microcontroller-driven zero-crossing or phase-angle drivers.

Technical Context

This triac operates in three quadrants (I, III, IV) with logic-compatible gate drive and is optimized for high-noise industrial environments where rapid voltage transients occur across inductive loads. Its internal ceramic insulation enables safe mounting to grounded heatsinks while maintaining 2500 VRMS isolation between MT2 and case.

The device delivers stable latching (IL ≤ 70 mA) and holding (IH ≤ 50 mA) behavior over –40 to +125 °C junction temperature, with on-state voltage as low as 0.85 V at 125 °C and dynamic resistance of 25 mΩ - minimizing conduction losses in continuous-duty applications like HVAC fan control and appliance heating regulation.

Key Specifications

Pinout & Package

Package: TO-220AB Insulated - epoxy-encapsulated, UL94 V0 rated, with insulated metal tab (MT2) electrically isolated from semiconductor die. Mounting 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 snubberless triac applications.

Compared with BTA16-600CW, the BTA16-600BWRG offers higher gate drive margin for noisy environments; compared with T1650-600G, it provides certified insulation for direct chassis mounting - making it preferred for safety-critical, manually assembled industrial controls.

Availability

BTA16-600BWRG is available at Aetrix Electronics and suitable for industrial motor control, smart appliance power regulation, static relay replacement, and lighting dimmer modules requiring stable component supply, long-term lifecycle support, and certified insulation integrity.

Supply support for BTA16-600BWRG 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, MEMS, and microcontroller technologies for industrial, automotive, and consumer markets.

The BTA16 series belongs to ST's high-reliability AC power switching portfolio, engineered specifically for snubberless operation in inductive load environments - emphasizing safety certification, thermal efficiency, and long-term manufacturability in industrial controls.

FAQ

What does the 'BW' suffix indicate in BTA16-600BWRG?

The 'BW' suffix denotes a Snubberless™ triac with 50 mA gate trigger current (IGT) and insulated TO-220AB package. It confirms compliance with high commutation performance (dV/dt ≥ 1000 V/µs at 125 °C) and 2500 VRMS isolation - distinguishing it from standard ('B') or lower-sensitivity ('C', 'SW', 'CW') variants in the same voltage/current class.

Can BTA16-600BWRG be used without a heatsink?

No - at 16 A RMS, the device dissipates significant power (VT × IT ≈ 1.2 W minimum, up to >10 W depending on conduction angle). With Rth(j-c) = 2.1 °C/W and max Tj = 125 °C, even at ambient 25 °C, junction temperature would exceed limits without a heatsink. A minimum 10 cm² aluminum heatsink is recommended for continuous operation.

Is the insulated tab rated for continuous 2500 VRMS or only for dielectric testing?

The 2500 VRMS rating is a continuous working voltage per UL1557 certification (file E81734), not just a test value. It defines the maximum RMS voltage that may be sustained between MT2 (tab) and any conductive surface - enabling safe mounting to grounded metal enclosures in Class I equipment without additional insulating hardware.

How does BTA16-600BWRG differ from BTB16-600BWRG?

BTA16-600BWRG uses an insulated TO-220AB package (2500 VRMS tab isolation), while BTB16-600BWRG uses a non-insulated TO-220AB package. Both share identical electrical specs (16 A, 600 V, 50 mA IGT, Snubberless™), but only the BTA variant permits direct mounting to grounded heatsinks - critical for safety-compliant industrial designs.