BD249 NPN Power Transistor – Datasheet

BD249 NPN Power Transistor is Lot of variations for robust device performance and reliable operation application designed for use in general purpose power amplifier and switching applications

Power Transistor?

Transistors are three-terminal semiconductor electronic devices that can be used as switches or amplifiers. They can be of NPN or PNP polarity, and many different types are available with different power and switching speed ratings. If a transistor designed to these concepts can handle more than 1 A of collector current, it is generally considered to be a power transistor. Such transistors must have low output resistance to deliver large load currents, and good junction insulation to resist high voltages. They must also dissipate heat very quickly to avoid overheating.

BD249 Pinout

BD249 Pin Configuration

Pin No	Pin Name
1	Base
2	Collector
3	Emitter

BD249 Key Features

• Collector Current -IC= 25A
• Minimum Lot-to-Lot variations for robust device performance and reliable operation
• DC current Gain hFE= 10(Min) @Ic = I5A
• Type Designator: BD249
• Material of Transistor: Si
• Polarity: NPN
• Maximum Emitter-Base Voltage |Veb|: 5 V

BD249 Specification

Ic (mA)	Pd	Vce (max)	Vcb	hfe	@Ic	FT
25	125	45	55	25	1500	3

BD249 Equivalent/Alternate:

• BD201, BD202, BD203, BD204, BD250

Application

• General Purpose Power Amplifier
• Switching Applications

You can download this datasheet for BD249 NPN Power Transistor from the link given below: