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SS34 Schottky Power Diode

SS34 is a surface mount High Power Schottky Rectifier with a Low voltage drop of 0.5V and a high forward current of 3A. This diode has high efficiency and high surge current capability of 100A. It is commonly used in freewheeling, DC/DC converter and reverse polarity protection applications.


Pin Configuration

Pin No.

Pin Name




Current always Enters through Anode



Current always Exits through Cathode



  • Power Schottky Barrier Diode
  • Forward Current (IF): 3A
  • Maximum Forward Voltage (VF): 0.5V (@3A)
  • Reverse Current (IR): 0.5mA
  • Maximum DC Blocking Voltage: 40V
  • Diode Marking: S4
  • Available in SMC DO-214AB and DO-214AA Package


Note: Complete Technical Details can be found at the SS34 diode datasheet given at the end of this page.


Alternative for SS34: SS32, SS33, SS35, 1N5822


Other Diodes: 1N4148, 1N4733A, 1N5824


Brief Note on SS34 Diode

Compared to normal diodes Schottky diode also has relatively faster switching speed and hence can be used in high frequency switching circuits. It also has low forward drop voltage, the voltage drop across the SS34 diode is 0.5 V. SS34 diode has a guard ring structure across the metal-semiconductor junction for stress protection.

SS34 Characteristic Graph


As shown in the graph the SS34 Diode has a minimum voltage drop of around 0.2V across it when 0.1A is flowing through it, as the current increases the Voltage drop across the diode also increases. The maximum current through the diode is 3A during when the voltage drop is only 0.5V and the maximum reverse voltage is 40V. It can also handle a maximum surge of 100A. The complete details of the diode can be found at the datasheet below.


Applications of Diode

  • Can be used to prevent reverse polarity problem
  • High Frequency Inverters
  • Used as a protection device
  • Current flow regulators
  • Polarity Protection applications


2D representation (DO-214AB)

This diode is available in DO-214AB package. The dimensions for the package as given in the SS34 datasheet is shown below

SS34 Schottky Power Diode 2D-Model

Component Datasheet

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