STMicroelectronics BTA06-700SWRG

Overview

BTA06-700SWRG from STMicroelectronics is a 6A, 700V snubberless logic-level triac in insulated TO-220AB package, rated for 2500VRMS voltage isolation between tab and terminals. It supports 10mA max gate trigger current (IGT), 1.3V max gate trigger voltage (VGT), and 50A non-repetitive surge current, designed for phase-controlled AC switching in inductive loads such as motor starters and heating regulators.

For engineers reviewing the BTA06-700SWRG datasheet, BTA06-700SWRG pinout, BTA06-700SWRG application, or BTA06-700SWRG equivalent, key selection criteria include its 10mA logic-level gate sensitivity, high commutation robustness (dV/dt ≥ 400 V/µs at 125°C), insulated tab compliance with UL E81734, and suitability for snubberless operation on inductive loads without external RC networks.

Technical Context

The BTA06-700SWRG is a three-quadrant, snubberless logic-level triac optimized for reliable turn-on under low gate drive and high dV/dt stress. Its internal ceramic pad enables 2500VRMS isolation, and it features guaranteed IGT ≤ 10mA across quadrants I, II, and III - enabling direct microcontroller GPIO interface without buffer stages.

It delivers high commutation performance: dV/dt rating of 400 V/µs (min) at Tj = 125°C and critical rate of decrease of main current (dI/dt)c ≥ 2.4 A/ms at (dV/dt)c = 10 V/µs. These parameters ensure stable operation during zero-crossing interruptions and rapid load transients in motor control and dimming circuits.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with BTA06-600SWRG, the -700 variant provides essential 700V blocking margin for 230VAC mains with lightning/surge tolerance; compared with BTB06-700SWRG, the insulated tab eliminates external isolation hardware, reducing assembly cost and validation effort for safety-critical AC control.

Availability

BTA06-700SWRG is available at Aetrix Electronics and suitable for motor speed controllers, heating regulation systems, light dimmers, and static relay replacements requiring stable component supply and long-lifecycle support.

Supply support for BTA06-700SWRG 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, designing and manufacturing analog, power, MCU, and sensor solutions for industrial, automotive, and consumer markets.

The BTA/BTB06 series belongs to ST's high-reliability power discrete portfolio, engineered specifically for robust AC switching in safety-critical and thermally demanding applications including home appliances and factory automation.

FAQ

Is BTA06-700SWRG compatible with 3.3V microcontroller GPIOs?

Yes. With a maximum gate trigger current (IGT) of 10mA and gate trigger voltage (VGT) ≤ 1.3V, the device can be directly driven by standard 3.3V or 5V microcontroller I/O pins without external buffer transistors or level shifters - provided the GPIO can source ≥10mA continuously for ≥10µs.

Does the insulated tab require electrical connection to circuit ground?

No. The insulated tab is internally connected to A2 (MT2) and must be treated as an active high-voltage node. It may be mounted to a heatsink without electrical bonding, but the heatsink itself must be isolated from other circuit potentials unless explicitly referenced to A2 in the system design.

Can BTA06-700SWRG replace a standard 4-quadrant triac in existing designs?

Only in quadrant-I/II/III applications. As a 3-quadrant device, it does not conduct in quadrant IV (A2 negative, G positive relative to A1), so it cannot substitute for full 4-quadrant triacs in circuits requiring bidirectional gate sensitivity - e.g., certain zero-crossing driver topologies or legacy dimmer IC interfaces.

What is the maximum recommended case temperature for continuous 6A operation?

The datasheet specifies IT(RMS) = 6A at Tc = 105°C for the insulated TO-220AB package. To sustain this current continuously, the case temperature must be maintained ≤ 105°C using appropriate heatsinking, airflow, and derating per Figure 2 - exceeding this limit risks thermal runaway due to Rth(j-c) = 2.7°C/W.