HER304 Diode

Specifications of HER304 diode

  • Maximum Recurrent Peak Reverse Voltage: 300 V
  • Maximum Average Forward Output Current: 3 A
  • Maximum Forward Voltage Drop per element at 1.0A DC: 1.3 V
  • Maximum reverse recovery time: 75 ns
  • Typical Junction Capacitance: 70 pF
  • Package: DO-27
  • Weight: 0.4 grams
  • Operating and Storage Temperature Range: -65...+150 °C

Polarity and Pinout

The HER304 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.
HER304 diode polarity
The current can flow from only the anode to the cathode and never from the cathode to the anode - the HER304 diode is like a one way electric valve.

Dimensions of HER304 diode

Dimensions HER304 diode

Replacement and Equivalent

You can replace the HER304 with the HER305, HER504, HER505, SF35, SF36, SF38, SF55, SF56, SF58, UF5404