Problem with 2N3904 BJT model

[Jess_Stuart]

I’m having an issue with the built-in 2N3904 BJT model.  Calculate DC bias gives “nanV” for each node, and there are warnings when I try to do a DC simulation about floating nets.  I can replace the 2N3904 transistor with another transistor 2N2222 for example, and the DC bias-point calculation works fine.  I think there may be an issue with the 2N3904 transistor model.  I verified this issue on a clean install.

Attached is a test schematic.

 

Attachments:

1. 2N3904_DC_bias_not_working.zip

[zhu]

Right click on the transistor, Edit Properties, roll down to the parameter IRb=50.3624 and set it to IRb=0. This parameter has been re-installed in v3.3.2 and this device must have been skipped.

[Author]

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