Solving Transistor Doubts with ADS: 2SD2216 from Panasonic

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The discussion centers on simulating a circuit involving the Panasonic 2SD2216 transistor in ADS software, specifically for audio signal amplification. The user is facing challenges due to the absence of the 2SD2216 model in the ADS library and is currently using a Q2N2222 transistor as a substitute by adjusting its Hfe value. There is uncertainty about the appropriateness of this substitution, as the 2SD2216 is a darlington transistor, unlike the Q2N2222. The user seeks guidance on whether other transistor models can be used with modified Hfe values and how to create a custom transistor model in ADS. Accurate modeling is crucial for effective circuit simulation and performance analysis.
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Hello all,

I have been trying to simulate a circuitry involving a transistor for the microphone line. I believe it was used for amplication of the external audio signal (not too sure, maybe can share the circuit). I am using the ADS to simulate my circuit.

The problem I faced was the transistor model was not in my ADS library and the information I got now is the spec. The transistor is a BJT silicon NPN epitaxial planer type with Hfe = 210 - 340 gain. The p/n is 2SD2216 from panasonic.

I was using Q2N2222 transistor as a replacement by changing the Hfe value and I'm not sure whether I am doing the right thing.

My questions are
whether I can used other transistor model and change the Hfe to represent it?
How do I create my own transistor model in ADS software?

thanks in advance!
 

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Sorry, there was a typo there. I was a 2SD2216 transistor.
 

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