The BTA24, BTB24, BTA25, BTA26 and T25 series Snuberrless™ and Standard 25 A Triacs are products of STMicroelectronics. They are suitable for general purpose AC switching and can be used in applications such as static relays, heating regulation, induction motor starting circuits, and phase control operation in light dimmers, motor speed controllers. The snubberless versions (BTA/BTB.W and T25 series) are specially recommended for use on inductive loads, thanks to their high commutation performances.
The BTA24, BTB24, BTA25, BTA26 and T25 series are 25 A triacs offered in TO‑220AB, DPAK and other packages for general‑purpose AC switching. They are suitable for applications such as static relays, heating regulation, induction‑motor starters, light dimmers and motor‑speed controllers. Snubberless versions include an internal ceramic pad for improved commutation on inductive loads.
The document provides absolute maximum ratings, electrical characteristics, thermal resistance data, ordering information and package dimensions. It also includes a product selector table and revision history for the series.
| Voltage rating | 600 V or 800 V |
|---|---|
| Sensitivity (gate trigger current) | 50 mA (standard) / 35 mA (snubberless) |
The BTA24 series is offered in through‑hole TO‑220AB and surface‑mount DPAK packages.
Use the part number format BTA24‑xxxBWRG where ‘xxx’ indicates the voltage code (600 V) and ‘BWRG’ denotes the Snubberless, 50 mA version.