BTA41-800BW

BTA41-800BW is a FUXINSEMI 40 A triac in the insulated TO-3P package, verified against the maker’s datasheet (version 2.1, page footer fuxinsemi.com), whose ordering table decodes this exact string as the TO-3P insulated BTA41 form at an 800 V repetitive peak off-state rating, with the BW suffix the three-quadrant, 50 mA gate-trigger group. Verified figures: RMS on-state current of 40 A at a 90 °C case temperature, surge on-state current of 400 A, I²t of 880 A²s, gate trigger current of 50 mA maximum, gate trigger voltage of 1.3 V maximum, on-state voltage of 1.55 V maximum at a 60 A peak current, repetitive peak off-state current of 10 µA maximum at 25 °C and 5 mA at 125 °C, and a junction range of −40 °C to +125 °C. The selection point is a three-quadrant 40 A triac for AC switching of heaters and motors where the insulated tab simplifies mounting. Selection advice: this is not an STMicroelectronics BTA code — this catalog lists ST’s BTA16-600BRG under ST’s own figures — and the two makers’ tables are not interchangeable; quote against the full BTA41-800BW string. Parameters verified against the FUXINSEMI BTA41-800BW datasheet.