MMBT2222ALT1G

The MMBT2222ALT1G is a specific variant of the widely used NPN bipolar junction transistor (BJT) known as the 2N2222. Manufactured by Rochester Electronics, this component is designed for general-purpose switching and amplification applications.

Key Features:

1. Type: NPN Bipolar Junction Transistor
2. Package: The MMBT2222ALT1G typically comes in a surface-mount package, specifically the SOT-23 package, which is compact and suitable for high-density circuit designs.
3. Pin Configuration: The SOT-23 package usually has three pins, which are designated as:
   • Collector (C): The terminal through which the output current flows.
   • Base (B): The terminal that controls the transistor's operation.
   • Emitter (E): The terminal through which the input current flows out.

Electrical Characteristics:

• Maximum Collector-Emitter Voltage (Vce): Typically around 40V, allowing it to handle a wide range of applications.
• Maximum Collector Current (Ic): Generally rated at 800mA, making it suitable for driving loads in various circuits.
• DC Current Gain (hFE): The transistor exhibits a gain of approximately 100 to 300, depending on the specific operating conditions, which is beneficial for amplification purposes.
• Transition Frequency (fT): The MMBT2222ALT1G has a transition frequency of around 250 MHz, indicating its capability for high-speed switching applications.

Applications:

The MMBT2222ALT1G is versatile and can be used in various applications, including:

• Switching Circuits: Ideal for low to medium power switching applications in consumer electronics.
• Amplification: Suitable for audio and RF amplification circuits.
• Signal Processing: Commonly used in signal processing applications due to its fast switching capabilities.

Thermal Characteristics:

• Junction Temperature (TJ): The maximum junction temperature is typically rated at 150°C, allowing for operation in a range of environments.
• Thermal Resistance: The thermal resistance from junction to ambient is low, which helps in managing heat dissipation effectively.

Additional Information:

• RoHS Compliance: The MMBT2222ALT1G is compliant with RoHS standards, ensuring it is free from hazardous substances, making it suitable for environmentally conscious designs.
• Manufacturer: Rochester Electronics specializes in the production and distribution of semiconductors, and the MMBT2222ALT1G is part of their extensive catalog of electronic components.

In summary, the MMBT2222ALT1G from Rochester Electronics is a reliable and efficient NPN transistor that is well-suited for a variety of electronic applications, offering a balance of performance, size, and thermal management.