STMicroelectronics BTB06-800SWRG

Overview

BTB06-800SWRG from STMicroelectronics is a 6 A, 800 V snubberless logic-level triac in TO-220AB non-insulated package, designed for AC phase control and switching in inductive loads. It features 10 mA max gate trigger current (IGT), 50 A non-repetitive surge rating, and 200 V/µs dV/dt immunity at 125°C. Used in motor speed controllers and lighting dimmers requiring reliable commutation without external snubbers.

For engineers reviewing the BTB06-800SWRG datasheet, BTB06-800SWRG pinout, BTB06-800SWRG application, or BTB06-800SWRG equivalent, key selection criteria include gate sensitivity (10 mA IGT), snubberless operation on inductive loads, TO-220AB thermal resistance (1.8 °C/W), and 800 V blocking voltage compliance with IEC 61000-4-5 surge immunity requirements.

Technical Context

This triac operates in three quadrants (I, II, III) and supports logic-level triggering with guaranteed IGT ≤ 10 mA at 25°C and ≤ 25 mA at 125°C. Its high commutation performance enables reliable turn-off under inductive load conditions without snubber networks.

The device uses a robust silicon die mounted in a TO-220AB package with direct metal tab connection (non-insulated), delivering Rth(j-c) = 1.8 °C/W and supporting continuous RMS current up to 6 A at Tc = 110°C. Critical dV/dt immunity reaches 200 V/µs (min) at 125°C with gate open.

Key Specifications

Pinout & Package

BTB06-800SWRG uses the TO-220AB non-insulated package with metal tab electrically connected to MT2 (A2). The case serves as the main current path terminal and requires isolation from chassis ground unless referenced to A2.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BTB06-800CW, BTB06-800SWRG reduces gate drive burden and eliminates snubber components; versus BTB12-800SW, it offers identical control behavior at lower current rating and smaller thermal footprint-ideal for cost- and space-constrained 6 A AC switching.

Availability

BTB06-800SWRG is available at Aetrix Electronics and suitable for motor speed controllers, lighting dimmers, heating regulation systems, and static relay replacements requiring stable component supply and long-term industrial availability.

Supply support for BTB06-800SWRG 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.

BTB06-800SWRG belongs to the BTA/BTB triac series engineered for robust AC mains switching in industrial, appliance, and building automation systems where reliability under inductive loads is critical.

FAQ

What is the maximum junction temperature for continuous operation?

The BTB06-800SWRG has an operating junction temperature range of –40°C to +125°C. For continuous 6 A RMS operation, case temperature must not exceed 110°C, requiring appropriate heatsinking to maintain Tj ≤ 125°C under worst-case ambient and airflow conditions.

Can this triac replace a BTA06-800SWRG in existing designs?

Yes - BTB06-800SWRG is functionally identical to BTA06-800SWRG except for package insulation: BTB uses non-insulated TO-220AB (tab connected to A2), while BTA uses insulated TO-220AB (2500 VRMS isolation). PCB layout and heatsink isolation must be verified before substitution.

Is a heatsink required for 6 A RMS operation?

Yes. With Rth(j-c) = 1.8 °C/W and typical VTM ≈ 1.4 V at 6 A, power dissipation exceeds 8 W. Without a heatsink, junction temperature would exceed 125°C even at modest ambient temperatures. A minimum 10 cm² aluminum heatsink is recommended for sustained 6 A operation.

Does BTB06-800SWRG support zero-crossing switching?

No - it is a random-phase triac. Zero-crossing operation requires external control circuitry (e.g., zero-crossing detector + timing logic) to gate-trigger only near voltage zero crossings. The device itself conducts bidirectionally once triggered and remains on until current falls below holding level.