How Do You Add a New Diode Model in LTspice?

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SUMMARY

The discussion centers on adding a new diode model in LTspice, specifically the 1N4004 diode, for simulating a full-wave bridge rectifier regulated by a Zener diode. The user initially struggled to find comprehensive datasheets, particularly lacking information on saturation current. Ultimately, the user resolved the issue by locating a suitable model on the manufacturer's website and is now seeking a 5.1 V Zener diode model for further simulation.

PREREQUISITES
  • Understanding of LTspice simulation software
  • Familiarity with diode characteristics and parameters
  • Knowledge of full-wave bridge rectifier circuits
  • Ability to interpret electronic component datasheets
NEXT STEPS
  • Research how to create custom diode models in LTspice
  • Learn about Zener diode specifications and applications
  • Explore resources for LTspice component libraries
  • Investigate the impact of saturation current on diode performance
USEFUL FOR

Electronics engineers, circuit designers, and hobbyists working with LTspice simulations, particularly those focusing on diode applications in rectifier circuits.

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EDIT: PROBLEM SOLVED! I found a model on a website of the manufacturer! Next, I need to hunt down this 5.1 V Zener.

Hey. I'm designing a full-wave bridge rectifier regulated by a Zener, and on of the project requirements is an LTspice simulation(not to mention it's a good place to start before buying components and building the rectifier).

I've been searching and reading tons of data sheets, but I cannot find much about the 1N4004 diode. For example, none of the datasheets I found show saturation current. Is there a place with LTspice models for popular diodes, or a place with better data sheets?

From what I can find, my model looks like this(where empty means nothing found yet):
.model D1N4004 D (Is= Rs= N= Tt= Cjo=15p Vj= M= Eg= Xti= Kf= Af= Fc= Bv=400 Ibv=5.00u Tnom= Isr= Nr= Ikf= Tikf= Trs1= Trs2=)

I know many of these variables are useless for my analysis, but some like Is just seem important and fundamental.
 
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EDIT: PROBLEM SOLVED! I found a model on a website of the manufacturer! Next, I need to hunt down this 5.1 V Zener.