1N4148 Silicon Diode



Common small signal fast switching diode.
Perfect for converting 5V level logic to 3.3V level compatible logic. Connect two of these diodes in series between a 5V level device and a 3.3V level device to get a voltage drop of around 1.4V, effectively converting your 5V logic level to a 3.6V logic level which is usually acceptable on 3.3V logic level devices (check the specifications of your specific device to be sure).


  • Forward Voltage: 0.4 to 1.2V depending on forward current
  • Reverse Breakdown Voltage: 100V
  • Diode Capacitance: 4pF
  • Absolute Maximum Ratings:
    • Peak Forward Surge Current: 4A (1 micro second)
    • Repetitive Peak Forward Current: 500mA (1 second)
    • Average Forward Current: 200mA
    • Repetitive Peak Reverse Voltage: 100V
    • Reverse Voltage: 75V
    • Power Dissipation: 500mW
  • Weight: 0.1g (0.004oz)

Package Included:

1 x 1N4148 Silicon Diode