BAT54CLT1G: Overview, Features, and Applications


The BAT54CLT1G is a dual Schottky diode in a common cathode configuration, designed for general-purpose applications. This device, commonly manufactured by ON Semiconductor, is employed in various circuit designs requiring low forward voltage drop and fast switching. Here's an overview of its features and common applications:


  • Type: Dual Schottky Diode with Common Cathode
  • Package: SOT-23
  • Manufacturer: ON Semiconductor



  1. Dual Diodes with a Common Cathode: This configuration simplifies circuit designs and allows for greater space efficiency, with two diodes housed in a single package sharing a common cathode.

  2. Low Forward Voltage Drop: The diode offers a low forward voltage drop, suitable for efficient rectification and minimal power loss in both low and high-frequency applications.

  3. Fast Switching: Known for its fast switching characteristics, it is well-suited for high-speed switching applications.

  4. High Reverse Voltage: The diode is capable of sustaining relatively high reverse voltages, making it suitable for a variety of applications where reverse voltage protection or rectification is necessary.

  5. Surface Mount Package: The SOT-23 package allows for straightforward integration into printed circuit boards, catering to modern electronics manufacturing requirements.


  1. Signal Demodulation: Commonly used in demodulation circuits to extract modulation from a carrier wave, such as in radio frequency circuits.

  2. Signal Clipping and Protection: Utilized in clipping or protection circuits, especially in applications where protection against voltage spikes or reverse voltage is needed.

  3. Logic Gates and Circuitry: The dual diode setup is utilized to create simple logic gates and circuitry, particularly in OR and AND logic functions.

  4. Voltage Multipliers: Found in voltage doubler and multiplier circuits, used to generate higher DC voltages from AC sources.

  5. Switching Applications: Its fast switching characteristics make it useful for switching and general-purpose rectification in a variety of applications.

  6. Oscillator Circuits: Its fast switching speed makes it suitable for use in oscillator circuits, especially in high-frequency or high-speed applications.

  7. Power Management: Used in rectification circuits to convert AC to DC in power supplies and various low-power devices.

The BAT54CLT1G, with its dual diodes in a common cathode setup, represents a versatile component widely utilized in a range of electronics applications including signal processing, rectification, and protection.