Part Number	PN3640 Datasheet
Manufacturer	Fairchild Semiconductor
Overview	PN3640 / MMBT3640 Discrete POWER & Signal Technologies PN3640 MMBT3640 C E C B TO-92 E SOT-23 Mark: 2J B PNP Switching Transistor This device is designed for very high speed saturate switching. noted Characteristic Total Device Dissipation Derate above 25°C Thermal Resistance, Junction to Case Thermal Resistance, Junction to Ambient PN3640 350 2.8 125 357 Max *MMBT3640 225 1.8 556 Units mW mW/ °C °C/W °C/W *Device mounted on FR-4 PCB 1.6" X 1.6" X 0.06." © 1997 Fairchild Semiconducto.