STMicroelectronics BTA06-800CWRG

Overview

BTA06-800CWRG from STMicroelectronics is a 6 A, 800 V snubberless logic-level triac in insulated TO-220AB package, rated for 2500 VRMS voltage isolation between tab and terminals. It supports quadrant I/II/III triggering with 35 mA max gate trigger current (IGT), 1.3 V max gate trigger voltage (VGT), and 50 A non-repetitive surge current. Designed for inductive AC load switching in motor controls and heating regulation.

For engineers reviewing the BTA06-800CWRG datasheet, BTA06-800CWRG pinout, BTA06-800CWRG application, or BTA06-800CWRG equivalent, key selection criteria include commutation robustness on inductive loads, gate sensitivity at low drive levels, thermal resistance (Rth(j–c) = 2.7 °C/W), and UL-rated insulated tab compliance.

Technical Context

This triac operates in three-quadrant mode (I/II/III), enabling reliable turn-on with low gate drive-critical for microcontroller-compatible logic-level control. Its snubberless architecture eliminates external RC networks by sustaining high dV/dt (400 V/µs min) and high critical rate of decrease of main current (dI/dt)c up to 3.5 A/ms under specified (dV/dt)c conditions.

Internal ceramic insulation ensures 2500 VRMS isolation between the metal tab and device terminals, meeting UL File E81734 requirements. Thermal performance is defined by Rth(j–c) = 2.7 °C/W and Rth(j–a) = 60 °C/W, supporting continuous 6 A RMS conduction at Tc ≤ 105°C in the insulated TO-220AB package.

Key Specifications

Pinout & Package

Package: Insulated TO-220AB with voltage-isolated metal tab (2500 VRMS isolation, UL E81734 certified). Tab is electrically connected to A2 terminal.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BTB06-800CWRG and BTA06-800BWRG, the BTA06-800CWRG uniquely combines logic-level gate drive, snubberless operation, and UL-certified isolation-enabling compact, safe, and microcontroller-direct AC switching without external protection circuitry.

Availability

BTA06-800CWRG is available at Aetrix Electronics and suitable for induction motor starters, resistive heating controllers, light dimmer modules, and static relay replacements requiring stable component supply and long-term industrial availability.

Supply support for BTA06-800CWRG 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 microcontrollers.

The BTA/BTB06 series belongs to ST's high-reliability AC power switching portfolio, engineered specifically for robust, snubberless operation on inductive and mixed loads in industrial and appliance applications.

FAQ

Is BTA06-800CWRG compatible with 3.3 V microcontroller GPIOs?

Yes. With a maximum gate trigger current (IGT) of 35 mA and gate trigger voltage (VGT) ≤1.3 V, it can be driven directly by most 3.3 V or 5 V MCUs without external buffers-provided the GPIO can source ≥35 mA peak current for the required pulse width.

What is the purpose of the insulated tab, and how is it used electrically?

The insulated tab is internally connected to A2 and provides 2500 VRMS isolation from the PCB mount surface. It allows direct mechanical attachment to a grounded heatsink while maintaining galvanic isolation between the heatsink and A1/G terminals-critical for safety compliance in Class I appliances.

Does BTA06-800CWRG require a snubber circuit for inductive loads?

No. As a snubberless triac, it guarantees commutation robustness up to 400 V/µs dV/dt and supports inductive loads (e.g., motors, transformers) without external RC snubbers-verified per IEC 61000-4-4 and manufacturer test conditions.

How does the three-quadrant (3Q) operation differ from standard four-quadrant triacs?

It triggers only in quadrants I (A2+, G+), II (A2–, G+), and III (A2–, G–), omitting quadrant IV (A2+, G–). This reduces susceptibility to false triggering from noise-induced gate voltage reversals-especially beneficial in electrically noisy industrial environments.