STMicroelectronics BTB16-700CWRG

Overview

BTB16-700CWRG from STMicroelectronics is a snubberless, logic-level, 16A RMS, 700V blocking voltage triac in TO-220AB package, rated for 35mA gate trigger current (QI–QIII), designed for phase-controlled AC switching in lighting and motor control. It features high commutation robustness (dV/dt ≥ 500 V/µs at 125°C), low on-state voltage (1.55 V max at 22.5A), and operates up to 125°C junction temperature.

For engineers reviewing the BTB16-700CWRG datasheet, BTB16-700CWRG pinout, BTB16-700CWRG application, or BTB16-700CWRG equivalent, this page delivers verified electrical specs, thermal resistance data, gate sensitivity thresholds, snubberless inductive load capability, and real-world triac selection guidance for dimmer and motor speed control designs.

Technical Context

This triac belongs to ST's SNUBBERLESS™ logic-level 3-quadrant series, optimized for direct microcontroller GPIO drive without external amplification. Its 35mA IGT (max) and 1.3V VGT enable compatibility with 3.3V/5V logic, while dV/dt immunity of 500 V/µs (QI–QIII) and critical commutation current (dI/dt)c ≥ 8.5 A/ms ensure reliable turn-off under inductive loads.

Thermal design is supported by Rth(j-c) = 1.2 °C/W (TO-220AB), enabling 16A RMS conduction at Tc = 100°C. The device uses standard triac structure with A1 (MT1), A2 (MT2), and G terminals - no internal shunt or auxiliary circuitry - and complies with UL insulation requirements via non-insulated tab construction.

Key Specifications

Pinout & Package

BTB16-700CWRG uses the standard TO-220AB package with non-insulated metal tab (electrically connected to A2). Mounting requires isolation hardware if A2 is not at chassis ground potential.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BTB16-700CWRG, BTA16-700CWRG adds isolation at same sensitivity and voltage rating, while BTB16-700BWRG sacrifices snubberless operation and commutation margin for lower gate drive threshold tolerance - making the CWRG variant optimal for compact, inductive-load designs requiring minimal external components.

Availability

BTB16-700CWRG is available at Aetrix Electronics and suitable for light dimming, induction motor speed control, heating regulation, and static relay replacement requiring stable component supply and consistent parametric performance across production batches.

Supply support for BTB16-700CWRG 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, designing and manufacturing analog, power, MCU, and sensor solutions for industrial, automotive, and consumer markets.

The BTA/BTB16 series targets cost-sensitive, high-reliability AC power control applications - emphasizing snubberless inductive load handling, logic-level gate drive, and UL-compliant packaging for global mains-connected equipment.

FAQ

What is the maximum junction temperature for BTB16-700CWRG?

The absolute maximum operating junction temperature is +125°C, as specified in the Absolute Maximum Ratings table. Continuous operation above this temperature risks irreversible degradation of the silicon die and premature failure. Thermal design must ensure Tj remains ≤125°C under worst-case load and ambient conditions, using Rth(j-c) = 1.2 °C/W and appropriate heatsinking.

Can BTB16-700CWRG be driven directly by a 3.3V microcontroller GPIO?

Yes - its logic-level gate requires only 35mA maximum trigger current (IGT) and 1.3V maximum gate trigger voltage (VGT), both fully compatible with standard 3.3V CMOS GPIO outputs. No external transistor buffer is needed, simplifying PCB layout and reducing component count in dimmer or motor controller designs.

Is a snubber circuit required when using BTB16-700CWRG with an inductive load?

No - BTB16-700CWRG is a certified SNUBBERLESS™ device. Its guaranteed dV/dt immunity of ≥500 V/µs (at 125°C, QI–QIII) and high commutation capability eliminate the need for external RC snubbers with typical inductive loads like motors and transformers, reducing design complexity and cost.

What is the difference between BTB16-700CWRG and BTA16-700CWRG?

Both share identical electrical specifications (16A, 700V, 35mA IGT, snubberless), but BTA16-700CWRG uses an insulated TO-220AB package with 2500V RMS isolation between the tab (A2) and mounting surface. BTB16-700CWRG has a non-insulated tab, requiring external isolation if A2 is not referenced to chassis ground.