2N3904 Transistor (40V, 0.2A)

Overview

The 2N3904 is a versatile NPN bipolar junction transistor (BJT) widely used in electronics for amplification and switching. It is a staple component in educational kits, hobbyist projects, and professional designs due to its low cost, reliability, and broad availability. Housed in a compact TO-92 package, it easily fits into breadboards and PCBs, making it ideal for prototyping and production. Whether you're amplifying small signals or driving loads up to 200mA, the 2N3904 delivers consistent performance.

Key Features

• NPN Silicon Transistor: Reliable and widely supported.
• High Voltage Rating: 40V collector-emitter voltage, suitable for many DC circuits.
• Current Capacity: Handles up to 200mA continuous collector current.
• Compact TO-92 Package: Easy to handle, breadboard-friendly, and space-saving.
• Fast Switching Speed: Suitable for low-frequency to moderate-speed applications.
• Low Cost & High Availability: Budget-friendly and easy to source.

Technical Specifications

• Type: NPN
• Collector-Emitter Voltage (Vceo): 40V
• Collector Current (Ic): 200mA (0.2A)
• DC Current Gain (hFE): 100-300 (typical)
• Power Dissipation: 625mW (typical)
• Transition Frequency (ft): 300MHz
• Operating Temperature Range: -55°C to +150°C
• Package: TO-92

Applications & Use Cases

• Signal Amplification: Audio preamps, sensor signal conditioning.
• Switching Circuits: Driving LEDs, relays, and small motors.
• Oscillator Circuits: Astable multivibrators, clock generators.
• Education & Prototyping: Ideal for learning transistor fundamentals.
• Hobby Electronics: Arduino and Raspberry Pi interfacing.
• Repair & Replacement: Common in legacy electronics.

What's Included

• 1x 2N3904 NPN Transistor (TO-92 package)

Compatibility

• Compatible with breadboards, PCBs, and standard prototyping tools.
• Works with microcontrollers (Arduino, ESP32, Raspberry Pi) for switching and amplification.
• Direct replacement for similar NPN transistors like BC547, 2N2222, and PN2222 in many circuits.

MOKWN Recommendation

For Egyptian makers and engineers, the 2N3904 is an essential component to have in your kit. Its versatility and low cost make it perfect for learning, prototyping, and final projects. Stock up and keep your builds running smoothly. Order now and enjoy fast delivery across Egypt!