1N5408 Diode

Specifications of 1N5408 diode

  • Maximum Recurrent Peak Reverse Voltage: 1000 V
  • Maximum Average Forward Output Current: 3 A
  • Maximum Forward Voltage Drop per element at 1.0A DC: 1.1 V
  • Typical Junction Capacitance: 40 pF
  • Package: DO-27
  • Weight: 1.18 grams
  • Operating and Storage Temperature Range: -65...+175 °C

Polarity and Pinout

The 1N5408 diode has a cathode (-) and anode (+). In the schematic symbol, the tip of the triangle with the line on top of it is the cathode. The cathode is marked on the body of a diode by a band as shown below.
1N5408 diode polarity
The current can flow from only the anode to the cathode and never from the cathode to the anode - the 1N5408 diode is like a one way electric valve.

Dimensions of 1N5408 diode

Dimensions 1N5408 diode

Replacement and Equivalent

You can replace the 1N5408 with the 1N5408G, 6A10, BY255, FR307, FR607, HER308, HER508, P600M, UF5408