(Pack of 5) MMBT3904 NPN Switching Transistor SMD SOT-23 Package

(Pack of 5) MMBT3904 NPN Switching Transistor SMD SOT-23 Package

The MMBT3904 is a high-speed NPN general-purpose transistor designed for low-to-medium current switching and signal amplification applications. With a collector-emitter voltage of 40V and a collector current of 200mA, it provides fast switching, high gain, and reliable small-signal performance in compact surface-mount circuits.

Encased in a SOT-23 surface-mount package, the MMBT3904 is ideal for space-constrained PCB designs and automated assembly processes. Its low saturation voltage and high switching speed make it suitable for driver circuits, switching applications, and small-signal amplification in consumer electronics, industrial devices, and hobby projects.

This pack of 5 transistors offers a convenient quantity for prototyping, repairs, and small-scale production.

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Features:

• Transistor Type: NPN General-Purpose Switching Transistor
• Package: SMD SOT-23 (compact, easy to solder)
• Collector-Emitter Voltage (V_CE): 40V
• Collector Current (I_C): 200mA
• DC Current Gain (hFE): 100–300 (typical)
• High Switching Speed: Efficient for digital and control circuits
• Low Saturation Voltage: Provides efficient switching performance
• Compact Surface-Mount Design: Ideal for modern PCB layouts
• Pack of 5: Convenient for prototyping, repairs, or small production runs

Applications:

• Switching Circuits: Low-to-medium current control in digital and industrial applications
• Signal Amplification: Small-signal and low-power amplification
• Driver Circuits: Relay, LED, and sensor drivers
• Consumer Electronics: Portable devices, audio systems, and control boards
• Industrial Automation: Reliable low-current switching in industrial circuits
• Educational & Prototyping Projects: Perfect for labs and hobbyist electronics
• Complementary Pairing: Works with MMBT3906 (PNP) for push-pull or general-purpose circuits