2N3904 NPN Transistor

The 2N3904 is a popular general-purpose NPN bipolar junction transistor (BJT) in a TO-92 package. With a maximum collector current of 200 mA and a collector-emitter voltage of 60 V, it's one of the most commonly used small-signal transistors for switching and amplification.

Key Features

• NPN Bipolar Transistor – General-purpose switching and amplification
• TO-92 Package – Standard through-hole footprint
• 200 mA Collector Current – Suitable for small-signal switching
• 60 V Collector-Emitter Voltage – Handles moderate voltage applications
• Low Power Dissipation – 625 mW at 25 °C

Specifications

• Type – NPN BJT
• Package – TO-92
• Collector-Emitter Voltage (Vce) – 60 V
• Collector Current (Ic) – 200 mA
• Current Gain (hFE) – 70 minimum
• Power Dissipation – 625 mW at 25 °C

Ideal For

• Small-signal switching circuits
• Signal amplification
• Arduino and microcontroller interfacing
• Beginner electronics projects and learning