2N3773 Transistor | Datasheet | Amplifier Circuit | Equivalent Solid State Inc.

2N3773 260W Audio amplifier Board | Bluetooth Amplifier

2n3773 transistor pinout

2n3773 transistor pinout Diagram

The 2N3773 is a PowerBase power transistor with a high safety operating region (up to 100V and 150W), a very stable linear operating region, large DC current gain, and a small voltage drop between collector and emitter for higher efficiency. Designed primarily for high power audio, disk head positioners, audio, disk head positioners and other linear applications. The device can also be used in power switching circuits such as relay or solenoid drivers, DC-DC converters, or inverters. Pin definitions are shown below.

The three pins (Base, Collector, and Emitter) of the 2N3773 are used for control, current input, and current output, respectively. For more detailed electrical parameters and application examples, refer to the official datasheet or consult the manufacturer’s Technical Support. When designing circuits, please pay close attention to the maximum limits of the transistor’s voltage, current, and power to ensure that it can operate stably and have a long service life.

2N3773 equivalent

2N3773 is an NPN type transistor, he is a good performance triode that can be used for high power and high current operation. It is often used to amplify audio signals, as a switch and so on.

Picture	Name	Makers	Maximum Power	Maximum Current	Maximum Voltage	Package Type
	2N3773	Semiconductor	150W	16A	80V	TO-3
	3DD207	Sanken Electric Co.	200W	16A	80V	TO-3P
	BD911	STMicroelectronics	150W	15A	80V	TO-3
	MJ2955	ON Semiconductor	60W	15A	60V	TO-3
	TIP35C	STMicroelectronics	80W	25A	80V	TO-220
	TIP142	STMicroelectronics	80W	10A	100V	TO-220

Note:

In the table, the most suitable substitute is BD911, whose maximum current is only slightly smaller than 2N3773. Other parameters are the same, and generally speaking, it can be replaced directly. When replacing a transistor, we need to consider that the voltage, current, and power of the original circuit will not exceed the maximum parameters for replacing the transistor, and we also need to consider packaging issues. Can it be installed? Is the heat dissipation good?