MMBT3904-TP

The MMBT3904-TP is a widely used NPN bipolar junction transistor (BJT) manufactured by Micro Commercial Components (MCC). It is designed for general-purpose amplification and switching applications. Here’s a detailed description of its key features and specifications:

Physical Characteristics:

• Package Type: The MMBT3904-TP is typically housed in a small SOT-23 package, which is a surface-mount device (SMD) that allows for efficient use of space on printed circuit boards (PCBs).
• Dimensions: The SOT-23 package generally measures approximately 2.9 mm x 1.3 mm x 1.1 mm, making it compact and suitable for high-density applications.

Electrical Specifications:

• Transistor Type: NPN
• Collector-Emitter Voltage (Vce): The maximum voltage that can be applied between the collector and emitter is typically around 40V, making it suitable for a variety of applications.
• Emitter-Base Voltage (Veb): The maximum voltage between the emitter and base is usually around 6V.
• Collector Current (Ic): The MMBT3904 can handle a maximum continuous collector current of about 200 mA, allowing it to drive moderate loads.
• DC Current Gain (hFE): The transistor exhibits a current gain (hFE) ranging from 100 to 300, depending on the collector current, which is beneficial for amplification purposes.

Performance Characteristics:

• Switching Speed: The MMBT3904 is capable of fast switching speeds, making it suitable for applications in digital circuits and signal processing.
• Power Dissipation: The maximum power dissipation is typically around 500 mW, which allows it to operate efficiently without overheating in most applications.
• Frequency Response: The transistor can operate effectively at frequencies up to several hundred MHz, making it suitable for RF applications.

Applications:

The MMBT3904-TP is commonly used in:

• Amplifiers: For audio and radio frequency amplification.
• Switching Circuits: In digital logic circuits and relay drivers.
• Signal Processing: In various electronic devices for signal modulation and demodulation.
• General Purpose: As a building block in various electronic circuits due to its versatility.

Additional Features:

• RoHS Compliant: The MMBT3904-TP is compliant with the Restriction of Hazardous Substances (RoHS) directive, ensuring it is free from certain hazardous materials.
• Temperature Range: It typically operates within a temperature range of -55°C to +150°C, making it suitable for a wide range of environmental conditions.

In summary, the MMBT3904-TP from Micro Commercial Components is a versatile and reliable NPN transistor that is widely used in various electronic applications due to its compact size, good performance characteristics, and ease of integration into circuits.