25 A RMS, 600 V — Snubberless™ Alternistor for inductive loads
The BTA24-600CWRG is an Alternistor TRIAC from ST's Snubberless™ series, rated 25 A RMS on-state current and 600 V off-state blocking voltage in a TO-220-3 through-hole package. The Snubberless™ designation means the device is designed to commutate inductive loads — motors, solenoids, transformers — without requiring an external RC snubber across the main terminals, simplifying the PCB layout and reducing BOM count.
Gate drive and surge capability
Maximum gate trigger current is 35 mA with a 1.3 V gate trigger voltage — a standard logic-level or optocoupler output can drive it directly, but the 50 mA holding current means the load must draw at least that much to keep the TRIAC latched after the gate pulse is removed. Non-repetitive surge current rating is 250 A at 50 Hz, 260 A at 60 Hz — this covers inrush from incandescent lamps, capacitive loads, or motor start-up without the device failing short.
Active, RoHS3, and the Snubberless™ family fit
The junction temperature range spans -40°C to 125°C, covering industrial and appliance-grade environments.