BC817 SOT-23 NPN PNP 45V 500mA SMD Transistors

The BC817 (NPN) and BC807 (PNP) are high-performance SOT-23 surface-mount (SMD) general-purpose transistors. Rated for 45V collector-emitter voltage and up to 500mA collector current, these compact transistors are ideal for switching small loads, amplification, signal processing, and driving LEDs, relays, or small motors in space-constrained PCB designs.

Detailed Feature Highlights

• High Current Handling: Supports up to 500mA (0.5A) continuous current, making it versatile for both signal switching and small load driving.

• Compact SOT-23 Package: Ultra-small surface-mount footprint saves valuable board space in miniature electronic designs.

• 45V Voltage Rating: Handles up to 45V Collector-Emitter breakdown voltage for broad circuit compatibility.

• NPN & PNP Complementary Pairs: Excellent linearity and amplification performance, perfect for push-pull output stages or dual-polarity switching.

• Fast Switching Speeds: Ideal for high-speed switching applications and general-purpose amplification.

Typical Applications

• Switching loads (LEDs, small relays, buzzers, micro-solenoids).

• Signal amplification and buffer circuits.

• Power management and gate driver circuits for MOSFETs.

• General-purpose low-noise amplification.

• Push-pull driver configurations (using complementary BC817 NPN + BC807 PNP pairs).