Nexperia B.V. NPN switching transistor PMST4401-QX

NPN switching transistor in a very small SOT323 (SC-70) surface-mounted plastic package measuring 2 mm x 1.25 mm x 0.95 mm. Collector current is rated up to 600 mA and collector-emitter voltage up to 40 V. Qualified according to AEC-Q101 for automotive applications. Total power dissipation is 200 mW at 25 °C ambient temperature, with a junction temperature rating of 150 °C. Thermal resistance from junction to ambient is 625 K/W when mounted on a standard FR4 PCB. DC current gain ranges from 80 to 300 depending on collector current and measurement conditions. Switching times include a turn-on time of 35 ns and a turn-off time of 250 ns under specified pulsed conditions.