Description
The 2STF1550 and 2STN1550 are NPN transistors manufactured using new “PB-HCD” (Power bipolar high current density) technology. The resulting transistor shows exceptional high gain performances coupled with very low saturation voltage.

Features
■ Very low collector-emitter saturation voltage
■ High current gain characteristic
■ Fast switching speed
■ Surface mounting devices in medium power SOT-89 and SOT-223 packages

Applications
■ Emergency lighting
■ LED
■ Motherboard and hard disk drive
■ Mobile equipment
■ Battery charger
■ Voltage regulation