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BC337 models seem not working correctly

Alberto Aloisio
Intellectual 910 points

Dear Support,

I am trying to simulate a circuit with TINA including a BC337-25 transistor. I have had a lot a trouble in doing that and eventually I pinpointed the problem in the BC337-25 model available in TINA.

If you select the SPICE-BJT model, even if the beta forward is set at 347, the simulation gives @(Ic=10mA, Vce=5V) a bare beta of 80 (please see the file bc337-25_SPICE_BJT_Ic_Vce_Ib.TSCand run Ctrl-Alt.R)

If you select the HybridP model, the beta seems fine, yet the Vbe during transient simulation is definitely wrong.... (see the file bc337-25_HybridP_Ic_Vce_Ib.TSC

If you simulate the simplest possible amplifier with the SPICE-BJT model, you find a Vbe of 1.1V, which is fully wrong... see file CE_amplifier_Bc337_HybridP.TSC

Am I doing something wrong? I really appreciate your help and support. best, Alberto

  • 0
    TI__Guru 71526 points

    Hello Alberto,   

    Thank you for your inquiry about TINA.  Since TINA is a DesignSoft/TINA program, questions are handled by using the DesignSoft support page: http://www.tina.com/technical-support/  . 

    The DesignSoft/TINA team is very helpful and this is the most direct way for TINA support.  Please advise by clicking the  This resolved my Issue  button when the question has been answered.    

    Regards, 

    ~Leonard