The MMBT3904/1A by NXP Semiconductors is a high-performance NPN bipolar junction transistor (BJT) designed for general-purpose amplifier and switching applications. This device is a member of the 3904 family of transistors, renowned for their reliability and versatility in various electronic circuits.

Key Features

• Transistor Polarity: NPN - Ideal for use as a switch or amplifier.
• Collector-Emitter Voltage (Vceo): 40V - Provides a good balance between breakdown voltage and minimal power dissipation.
• Collector Current (Ic): Up to 200 mA - Suitable for driving small loads in electronic circuits.
• DC Current Gain (hFE): 100 to 300 - Ensures efficient current amplification.
• Transition Frequency (fT): 300 MHz - High-frequency operation allows usage in RF applications.
• Power Dissipation (Pd): 350 mW - Capable of dissipating moderate amounts of power without overheating.
• Package: SOT-23 - A compact surface-mount package that is suitable for automated assembly processes.

Applications

The MMBT3904/1A transistor is well-suited for a wide range of applications due to its general-purpose nature. It is commonly used in:

• Signal amplification in audio and radio frequency (RF) circuits.
• Switching operations in digital and analog circuits.
• Driver stages in amplifiers and other electronic devices.
• Control circuits in embedded systems.
• Power management in portable and low-power devices.

Quality and Reliability

NXP Semiconductors is known for its commitment to quality, and the MMBT3904/1A is no exception. It is manufactured to high standards, ensuring consistent performance and reliability for industrial, commercial, and consumer applications. The device also meets or exceeds various environmental and regulatory standards, making it a responsible choice for electronic designers and manufacturers.