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1N5819 Schottky Diode

The 1N5819 is a Schottky diode with a low forward voltage drop and high switching speed. It is commonly used in high frequency applications like Inverters, DC-DC converters etc.


Pin Configuration

Pin No.

Pin Name




Current always Enters through Anode



Current always Exits through Cathode



  • Schottky Rectifier Diode
  • Average forward current is 1A
  • Forward Surge Current is 25A
  • Forward Voltage Drop 600mV at 1A
  • Peak reverse voltage is 40V
  • RMS Reverse Voltage is 28V
  • Available in DO-41 Package

Note: Complete Technical Details can be found at the 1N5819 datasheet given at the end of this page.


Other Schottky Diodes

1N5822, 1N5824, BAT54A


Alternative Diodes

1N4148, 1N4733A, 1N5408, 1N5822, Zener Diodes.


1N5819 Diode Overview

A diode is a device which allows current flow through only one direction. That is the current should always flow from the Anode to cathode. The cathode terminal can be identified by using a grey bar as shown in the picture above.

The 1N5819 is a Schottky Diode with forward voltage drop of 600mV and a forward current of 1A. Since it has a very low forward voltage drop it can be used in reverse polarity protection circuits, unlike a normal diode which has more than 1V as forward voltage drop 1N5819 only has 600mV drop across it when 1A current is flowing through it.

Compared to normal diodes Schottky diode also has relatively faster switching speeds and hence can be used in high frequency switching circuits. The reverse blocking voltage for 1N5819 is about 28V only which is kind of a downside for all Schottky diodes so make sure this does not affect the performance in your circuit.


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-41)

This diode is available in DO-41 package. The dimensions for DO-41 package is shown below

1N5819 dimensions

Component Datasheet

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