BD437 NPN Power Transistor – Datasheet

The BD437 is silicon epitaxial-base NPN power transistors is intended for use in medium power linear and switching applications. The BD437 is especially suitable for use in car-radio output stages

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.

BD437 Pinout

BD437 Pin Configuration

Pin No	Pin Name
1	Emitter
2	Collector
3	Base

BD437 Key Features

• Collector-Emitter Sustaining Voltage –
  • : VCEO(SUS)= 45V(Min)
• Minimum Lot-to-Lot variations for robust device performance and reliable operation
• Type Designator: BD437
• Material of Transistor: Si
• Polarity: NPN
• Maximum Emitter-Base Voltage |Veb|: 5 V

BD437 Specification

Ic (mA)	Vce (max)	Vcb	hfe	@Ic	FT
4	45	45	30-130	10	3

BD437 Equivalent/Alternate:

• BD410, BD414, BD433, BD438

Application

• Amplifier and switching
• Medium Power Linear

You can download this datasheet for BD437 NPN Power Transistor from the link given below: