STMicroelectronics BTB16-600BWRG

Overview

BTB16-600BWRG from STMicroelectronics is a 16 A, 600 V Snubberless™ triac in insulated TO-220AB package, designed for AC mains switching in inductive load applications. It delivers 50 mA gate trigger current (IGT), 400 V/µs critical dV/dt at 125 °C, and 2500 VRMS isolated tab rating per UL1557 (file E81734), enabling direct mounting on heatsinks without additional insulation in static relays and motor controllers.

For engineers reviewing the BTB16-600BWRG datasheet, BTB16-600BWRG pinout, BTB16-600BWRG application, or BTB16-600BWRG equivalent, key selection criteria include insulated tab compliance, snubberless commutation capability for inductive loads, thermal resistance (Rth(j-c) = 2.1 °C/W), and gate sensitivity matching to microcontroller drive strength.

Technical Context

This triac operates in three-quadrant mode with enhanced commutation robustness-specifically engineered to sustain high dI/dt (≥8.5 A/ms) and dV/dt (≥400 V/µs) under inductive switching stress at junction temperatures up to 125 °C. Its internal ceramic insulation enables safe 2500 VRMS isolation between MT2 and heatsink.

It features low on-state voltage (VTO ≤ 0.85 V at 125 °C) and dynamic resistance (RD ≤ 25 mΩ), minimizing conduction losses during phase-angle control or ON/OFF switching. The 50 mA IGT ensures compatibility with standard logic-level gate drivers while maintaining noise immunity via guaranteed VGD ≥ 0.2 V at 125 °C.

Key Specifications

Pinout & Package

BTB16-600BWRG uses an insulated TO-220AB package with metal tab electrically isolated from MT2. The tab serves as the heatsink interface and must be grounded or left floating per system isolation requirements; it is not a circuit terminal.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BTB16-600BWRG, BTA16-600BWRG offers identical performance and form factor, while BTB16-600CW reduces gate current demand by 30% at the cost of marginally lower noise immunity-making it preferable only when drive strength is constrained.

Availability

BTB16-600BWRG is available at Aetrix Electronics and suitable for industrial motor control, lighting dimmers, static relay modules, and appliance heating systems requiring stable component supply, long-term lifecycle support, and UL-certified isolation.

Supply support for BTB16-600BWRG 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.

BTB16-600BWRG belongs to ST's Snubberless™ triac product line, engineered specifically for reliable, snubber-free AC switching in inductive and resistive loads across mains-powered appliances and industrial controls.

FAQ

What is the maximum allowable case temperature for continuous 16 A operation?

Per datasheet Figure 3, BTB16-600BWRG supports 16 A IT(RMS) continuously at TC = 86 °C. Exceeding this requires derating: at TC = 100 °C, maximum IT(RMS) drops to ~12.5 A. Thermal design must ensure heatsink-to-case temperature rise stays within Rth(j-c) × (Ploss) limits, where Ploss ≈ IT² × RD + IT × VTO.

Can BTB16-600BWRG replace a non-insulated triac like BTB16-600B in an existing design?

No-BTB16-600BWRG has an insulated tab rated for 2500 VRMS, while BTB16-600B is non-insulated. Direct substitution requires verifying that the original design's heatsink grounding scheme remains safe and compliant; if the heatsink was previously connected to MT2, insulation barriers or revised layout are mandatory.

Does the "W" suffix guarantee full 3-quadrant operation?

Yes-the "W" denotes Snubberless™ versions optimized for 3-quadrant operation (quadrants I, III, IV), with specified IGT, dV/dt, and commutation performance only in those quadrants. Quadrant II triggering is not characterized or guaranteed, and use in that quadrant may result in unreliable turn-on or increased dv/dt sensitivity.

What is the recommended gate drive circuit for reliable triggering?

A 12 V DC source with series resistance ≤33 Ω delivers ≥50 mA peak gate current, satisfying IGT(max) spec. A 100 ns rise-time pulse is advised to meet dl/dt requirements. For microcontroller interfaces, a BC817-40 NPN transistor or MOC3021 optocoupler with 330 Ω gate resistor provides robust, isolated drive meeting VGD ≥ 0.2 V noise immunity at 125 °C.