SMMBT2222ALT1G ON Semiconductor TRANS NPN 40V 600MA SOT23-3

The SMMBT2222ALT1G is an NPN bipolar junction transistor (BJT) manufactured by ON Semiconductor. Here is a detailed introduction to the SMMBT2222ALT1G transistor:


1. Overview:

  • Manufacturer: ON Semiconductor
  • Part Number: SMMBT2222ALT1G
  • Type: NPN Bipolar Junction Transistor (BJT)
  • Package: SOT-23-3 (Small Outline Transistor Package with 3 Leads)

2. Key Specifications:

  • Type: NPN transistor (Negative-Positive-Negative configuration)
  • Voltage Rating: 40V
  • Current Rating: 600mA
  • Package Type: SOT-23-3 package with three leads
  • Hfe (Forward Current Gain): Typically ranging from 100 to 300
  • Transition Frequency (ft): 250MHz
  • Power Dissipation (Pd): 225mW
  • DataSheet SMMBT2222ALT1G PDF

3. Features and Applications:

  • NPN BJT: The transistor consists of a layer of p-doped semiconductor between two n-doped layers.
  • Voltage and Current Ratings: Rated for a maximum voltage of 40V and a continuous collector current of 600mA.
  • Package Type: SOT-23-3 is a small surface-mount package that facilitates easy mounting on PCBs.
  • High Frequency Operation: With a transition frequency of 250MHz, suitable for high-frequency applications.
  • Power Dissipation: Capable of dissipating up to 225mW of power.
  • Switching Speed: Offers fast switching times for efficient performance in switching applications.

4. Package Information:

  • SOT-23-3 Package: Compact and widely used in surface-mount applications, offering space efficiency and compatibility with automated manufacturing processes.

5. Applications:

  • Amplification: Commonly used in amplifier circuits due to its high gain characteristics.
  • Switching Applications: Suitable for switching circuits in various electronic designs.
  • Voltage Amplification: Used to amplify voltage signals in different types of electronic circuits.
  • Oscillators: Can be part of oscillator circuits for generating waveforms.
  • Signal Processing: Plays a role in signal processing applications in electronic systems.

6. Advantages:

  • High Gain: Offers considerable forward current gain for amplification purposes.
  • Fast Switching: Enables quick switching transitions for efficient circuit operation.
  • Versatile Use: Suitable for a wide range of applications in electronics.
  • Small Form Factor: The compact SOT-23-3 package is ideal for space-constrained designs.

The SMMBT2222ALT1G NPN transistor from ON Semiconductor is a versatile component suitable for various amplification and switching applications in electronic circuits, providing high gain, fast switching times, and a compact form factor in the SOT-23-3 package.

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