Comparison between 1N4148 and 1N4007

The 1N4148 and 1N4007 are two commonly used diodes, but they serve different purposes due to their varying specifications. Here is a comparison between the 1N4148 small-signal diode and the 1N4007 rectifier diode:

1N4148 Small-Signal Diode:

  • Type: Small-signal diode
  • Voltage Rating: Up to 100V
  • Current Rating: Typically 200mA
  • Package: DO-35 Axial package
  • Fast Switching: Very fast recovery time
  • Applications: Signal demodulation, signal clipping, switching applications, protection circuits
  • Forward Voltage Drop: About 0.7V at low currents

1N4007 Rectifier Diode:

  • Type: Rectifier diode
  • Voltage Rating: Up to 1000V
  • Current Rating: 1A or higher
  • Package: DO-41 Axial package
  • High Voltage: Designed for higher voltage applications
  • Applications: Power supplies, rectification circuits, voltage clamping
  • Forward Voltage Drop: Higher than the 1N4148, typically around 0.7V to 1V depending on the current
  • DataSheet 1N4007 PDF


  • Voltage Rating:

    • 1N4148: Up to 100V
    • 1N4007: Up to 1000V, suitable for higher voltage applications
  • Current Rating:

    • 1N4148: Typically 200mA
    • 1N4007: 1A or higher, designed for higher current applications
  • Package Type:

    • Both often come in axial packages, but the specific package type can vary.
  • Applications:

    • 1N4148: Used in signal processing and low-power applications
    • 1N4007: Suited for power supply and high voltage rectification applications
  • Forward Voltage Drop:

    • The 1N4007 typically has a higher forward voltage drop compared to the 1N4148 due to its use in higher power applications.


  • 1N4148 is a small-signal diode with lower voltage and current ratings, suitable for signal processing and lower power applications.
  • 1N4007 is a rectifier diode with higher voltage and current ratings, designed for rectification and power supply applications handling higher power levels.

When selecting between the 1N4148 and 1N4007, consider the voltage, current, and power requirements of your circuit to ensure the diode chosen can handle the specific demands of the application effectively.

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