Simulate Leakage Current - Reverse Bias Diode

[cheniour oussama]

TL;DR Summary

leakage current in a diode with ltspice simulation

hello I m Trying to simulate leakage current, say from a reverse bias diode I'm fairly
how i can do it

 

[phyzguy]

Summary:: leakage current in a diode with ltspice simulation

hello I m Trying to simulate leakage current, say from a reverse bias diode I'm fairly
how i can do it

The model should have a parameter Roff that allows you to put in an off resistance in parallel with the ideal diode.

 

[cheniour oussama]

The model should have a parameter Roff that allows you to put in an off resistance in parallel with the ideal diode.

how please

 

[phyzguy]

It will be in the .model statement which defines the diode model. Do you have the .net file created by LTSpice? It will be a text file which is the input to the SPICE simulator.

 

[cheniour oussama]

no i i have' nt .net file for this circuit but how i can I input the file please ?

 

[Baluncore]

Attached are LTspice .asc and .plt files. Remove the .txt extension so you can run them.
Right click on diode to change model, or Left click over the diode terminal to plot current.

 

[phyzguy]

I don't have that RB411D diode in my version of LTSpice, but I substituted another Zener, 1N750. What you want to do is when you select the diode, you copy the model and paste the model as a .model SPICE directive on the schematic. Then you can edit the model parameters. The easiest way to adjust the diode leakage is to adjust the Is parameter. I did that in this asc file.

 

[Baluncore]

The RB411D is a Schottky rectifier diode, not a Zener diode.
Notice the suBtle schematic symbol 'Z' of the Zener cathode, and the 'S' of the Schottky cathode.