BSS123NH6327XTSA1: Overview, Features, and Applications


The BSS123NH6327XTSA1 is a small-signal N-channel MOSFET (Metal Oxide Semiconductor Field-Effect Transistor) developed and manufactured by Infineon Technologies. As with other MOSFETs, it is commonly used for switching and amplification of electronic signals. Here's an overview of its features along with common applications:


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



  1. Enhancement Mode: The BSS123NH6327XTSA1 operates in the 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: With a low threshold voltage, it can be easily driven by logic level circuits and is suitable for low-voltage and low-power applications.

  3. Small Package: The SOT-23 package form factor allows for efficient use of board space and is suitable for compact electronic designs.

  4. Low Input Capacitance: This feature allows for easy integration into high-frequency applications by minimizing the capacitive loading of driving circuits.

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


  1. Signal Switching: It is commonly used for small-signal switching applications in various electronic circuits, especially in low-power and portable devices due to its minimal power requirements.

  2. Level Shifting: Due to its low threshold voltage, the BSS123NH6327XTSA1 is suitable for level-shifting applications, particularly when interfacing signals between devices operating at different voltage levels.

  3. Load Switching: It is used as a switch to control power supply to various sub-circuits, especially in battery-operated and portable 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 utilized in oscillator and waveform generation circuits, particularly in low-power or small-scale integrated systems where efficient power utilization is crucial.

  6. Voltage Regulation: It can be employed in voltage regulator circuits, especially in low-power applications where low threshold voltage and compact form factor are advantageous.

Given its features and applications, the BSS123NH6327XTSA1 is widely used in various digital and analog circuits, particularly in portable devices and other electronic systems that require efficient power management and compact design.