2N3905 Datasheet – 40V, 200mA, PNP Transistor

What is 2N3905?

This is a PNP bipolar junction transistor (BJT) designed for general-purpose amplifier and switching applications. Maximum collector current: 0.2A, Maximum collector-emitter voltage: 40V.

Part Number: 2N3905

Function: Small Signal General Purpose PNP Transistor

Package: TO-92 Type

Manufacturer: Unspecified

Image and Pinouts:

2N3905 datasheet



This is PNP Silicon Epitaxial Transistor. This is commonly used in audio amplifier circuits, voltage regulators, and switching circuits.


1. PNP Silicon Epitaxial Transistor for Switching and Amplifier Applications

2. RoHS Compliance

Advantages Vs Disadvantages


1. High voltage and current handling capabilities
2. Low noise and distortion for use in audio amplifier circuits
3. Low power dissipation for efficient operation


1. Limited maximum current rating, which makes it unsuitable for high power applications
2. Relatively low maximum frequency rating, which makes it unsuitable for high-speed applications
3. Limited gain bandwidth product, which limits its use in high-frequency amplification circuits

Mechanical Data :

1. Case:  TO-92, Plastic Package

2. Terminals:  Solderable per MIL-STD-202G, Method 208

3. Weight:  0.18 gram


Absolute maximum ratings ( Ta=25°C )

1. Collector to Base Voltage: Vcbo = 40 V

2. Collector to Emitter Voltage: Vceo = 40 V

3. Emitter to Base Voltage: Vebo = 5 V

4. Collector Current: Ic = 200 mA

5. Power Dissipation: Pd = 625 mW

6. Junction Temperature: Tj = 150°C

7. Storage Temperature: Tsg = -55 ~ +150°C


2N3905 Datasheet PDF Download

2N3905 pdf

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