High power transistor with NPN polarity from ST, suitable for medium power linear and switching applications. * Collector emitter breakdown voltage 45V * Collector base breakdown voltage 45V * Collector current 4A * Power 36W * Current gain 140 DC * Transition frequency 3MHz * TO-126 case https://elecena.pl/product/27273768/bd437-to126-power-switch-transistor-trusemi 2024-11-14 https://elecena.pl/product/27273768/bd437-to126-power-switch-transistor-trusemi 2025-06-16 https://elecena.pl/product/27273768/bd437-to126-power-switch-transistor-trusemi 2025-08-14 https://elecena.pl/product/27273768/bd437-to126-power-switch-transistor-trusemi 2025-09-24 https://elecena.pl/product/27273768/bd437-to126-power-switch-transistor-trusemi 2026-03-24