1N4148WS-7-F: Overview, Features, and Applications

The 1N4148WS-7-F is a popular semiconductor device known as a small signal diode. As part of the 1N4148 family, this diode is extensively used in a wide variety of electronic circuits for signal processing, protection, and rectification. Here's an overview of its features and typical applications:


Type: Small Signal Diode
Package: SOD-323 (also known as SC-70) Surface Mount Package
Manufacturer: ON Semiconductor
Polarity: It is a general-purpose switching diode featuring high switching speed and low leakage current.


  1. Fast Switching Speed: The 1N4148WS-7-F diode is known for its rapid switch response, making it suitable for high-frequency applications.

  2. High Reverse Voltage Capability: With a maximum reverse voltage rating of 100V, it offers reliable reverse voltage protection.

  3. Low Forward Voltage Drop: This characteristic ensures that when forward-biased, it exhibits minimal voltage drop, enabling efficient signal processing and rectification.

  4. Surface Mount Package: Housed in the SOD-323 package, the diode is designed for convenient surface mount assembly onto printed circuit boards, making it suitable for modern electronics manufacturing processes.


  1. Signal Demodulation: The 1N4148WS-7-F diode is widely used in radio frequency (RF) and communication circuits for demodulating amplitude modulated (AM) signals.

  2. Signal Clipping and Protection: It is employed for clipping and protection applications in circuits where precise voltage levels need to be maintained or where protection against voltage spikes or reverse voltage is necessary.

  3. Logic Circuits: Due to its characteristics, it is utilized within logic gates and circuitry, especially for creating OR and AND logic functions.

  4. Voltage Multipliers: These diodes are commonly used in voltage doubler and multiplier circuits for generating a higher DC voltage from an AC source.

  5. Switching Circuits: They are extensively used in switching applications where their fast switching characteristics are leveraged for efficient control of current flow.

  6. Rectification: The diode is used for rectifying AC signals into DC signals in various electronics applications such as power supplies, battery chargers, and more.

The 1N4148WS-7-F diode is an essential component in numerous electronic systems due to its high versatility, making it suitable for a broad range of applications, including consumer electronics, telecommunications, automotive systems, and industrial equipment.

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