MJF44H11 (NPN), MJF45H11 (PNP)
Preferred Devices
Complementary Power Transistors
For Isolated Package Applications
. . . for general purpose power amplification and switching such as output or driver stages in applications such as switching regulators, converters and power amplifiers.
http://onsemi.com
Low Collector-Emitter Saturation Voltage Fast Swit...