What .model for D_Bridge _ + - AA?

hello, question in the topic of my post.

image

and is there any list of all .model? so that I do not clutter the forum every time if I can not find it in google or YT.

:slight_smile:

Probably not. There’s no way to include models for all KiCad symbols. Also, not all models are the same and focus on different features/functions or even simulation speed, so a “universal database” is not practical. For example, you may find someone who wrote a 1N4148 model which does model breakdown, and another which does not. Here are some links that might help you find aggregated databases of models:
http://bordodynov.ltwiki.org/
http://ltwiki.org/index.php?title=SPICE_Model_Links


As for your specific need, one way is to create a subcircuit using 4 separate diodes. I used the 1N4004 model from Diodes Inc to create the following. I suggest pasting the text into a .lib file and loading it into Eeschema using the normal UI.

.subckt D_Bridge_+-AA 1 2 3 4
D1 3 1 DI_1N4004
D2 4 1 DI_1N4004
D3 2 3 DI_1N4004
D4 2 4 DI_1N4004
.model DI_1N4004 D(IS=76.9p RS=42.0m BV=400 IBV=5.00u CJO=39.8p M=0.333 N=1.45 TT=4.32u)
.ends D_Bridge_+-AA
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A somewhat common diode bridge is MB6S. But I think Bordodynov’s (and analog spiceman’s) models mentioned above are often better than the vendors’ models.

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Thanks for the link. Looks like their subcircuit has the same exact structure as mine, but of course with different diode parameters.

thank U guys. bridge [MB6S] works good.