BC237 Transistor (45V, 0.1A)

Overview

The BC237 is a classic general-purpose NPN bipolar junction transistor (BJT) housed in a compact TO-92 package. With a collector-emitter voltage rating of 45V and a maximum collector current of 0.1A, it delivers reliable performance for a wide range of low-power amplification and switching tasks. Whether you're prototyping on a breadboard, designing audio preamplifiers, or building sensor interfaces, the BC237 offers a dependable and cost-effective solution.

Key Features

• General-Purpose NPN Transistor: Ideal for both amplification and switching applications.
• 45V Collector-Emitter Voltage: Handles moderate voltage levels with ease.
• 0.1A Collector Current: Suitable for driving small loads like LEDs, relays, and logic signals.
• TO-92 Package: Compact, through-hole design perfect for breadboards and PCBs.
• Low Noise: Excellent for audio and signal processing applications.
• High Gain (hFE): Provides good amplification for weak input signals.

Technical Specifications

• Type: NPN Bipolar Junction Transistor
• Collector-Emitter Voltage (Vceo): 45V
• Collector Current (Ic): 0.1A
• DC Current Gain (hFE): Typically 100-800 (depending on variant)
• Transition Frequency (ft): 150 MHz (typical)
• Package: TO-92
• Operating Temperature Range: -55°C to +150°C

Applications & Use Cases

• Audio Amplification: Preamplifiers, audio drivers, and signal conditioning circuits.
• Switching Circuits: Driving relays, LEDs, and small DC loads.
• Sensor Interfacing: Reading signals from sensors and transducers.
• Hobby Projects: Ideal for educational kits, DIY electronics, and robotics.
• Signal Processing: Low-frequency signal amplification and buffering.

What's Included

• 1x BC237 Transistor (TO-92 package)

Compatibility

• Breadboard Friendly: 0.1-inch pitch leads for easy prototyping.
• Replacement: Compatible with 2N3904, BC547, and similar NPN transistors (check pinout).
• Pinout: Emitter, Base, Collector (E-B-C) – always verify before wiring.

MOKWN Recommendation

For Egyptian makers and engineers, the BC237 is a staple component that belongs in every electronics kit. Its versatility and low cost make it perfect for learning, prototyping, and production. Whether you're a student at university or a professional in the field, this transistor will serve you well. Stock up today and keep your projects moving forward!