BSS138NH6327XTSA2: Overview, Features, and Applications

The BSS138NH6327XTSA2 is an N-channel enhancement mode field-effect transistor (FET) designed for use in a wide range of electronic circuits. Manufactured by Infineon Technologies, it is typically used in low voltage and low power applications. Here's an overview of its features and common applications:


  • Type: N-channel Enhancement Mode Field-Effect Transistor (FET)
  • Package: SOT-23
  • Manufacturer: Infineon Technologies



  1. Enhancement Mode: The BSS138NH6327XTSA2 operates in enhancement mode, meaning it requires a positive voltage at the gate with respect to the source to allow current flow between the drain and source terminals.

  2. Low Threshold Voltage: The transistor features a low threshold voltage, enabling it to be easily switched on with low gate-to-source voltage, making it suitable for low-power applications and battery-operated devices.

  3. Small Footprint: Housed in the SOT-23 package, it is designed for surface-mount applications, ensuring efficient use of board space and ease of assembly in modern electronics manufacturing.

  4. Low Input and Output Capacitance: Built for high-frequency applications, the FET minimizes the capacitive loading of driving circuits while enabling efficient integration into various electronic designs.

  5. High Transconductance: The BSS138NH6327XTSA2 features high transconductance, which makes it suitable for amplification applications, especially in low-power, small-scale integrated systems.


  1. Voltage Level Shifting: Due to its low threshold voltage and high transconductance, it's commonly used for level-shifting applications, especially in interfacing digital signals between different voltage domains.

  2. Signal Switching: The BSS138NH6327XTSA2 is frequently utilized for signal switching applications in various electronic circuits, particularly in low-power and battery-operated devices.

  3. Load Switching: It is used as a switch to control power supply to various sub-circuits, especially in battery-operated devices, aiding in efficient energy management.

  4. Signal Amplification: With its high transconductance and low threshold voltage, the FET is well-suited for signal amplification in low-power and low-frequency applications.

  5. Oscillator Circuits: The FET can be employed in oscillator and waveform generation circuits, particularly in low-power or small-scale integrated systems.

  6. DC-DC Converter Control: Due to its low threshold voltage and fast switching characteristics, the BSS138NH6327XTSA2 can be used in DC-DC converter control applications.

The BSS138NH6327XTSA2 FET finds widespread usage in various digital and analog circuits due to its compact size, minimal control current requirements, and its ability to efficiently manage signal switching and level-shifting tasks within low-power and moderate-power electronic systems.

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