I have just recently placed a new paper on the website that describes a relatively easy way to model diffusion resistors. You can find it at http://www.designers-guide.com/Modeling/diffusion-resistors.pdf. I put it together when I found that many people are using two-terminal models for diffusion resistors. Of course, the resistance of diffusion resistors is affected by the substrate. Any by ignoring the substrate terminal, they were taking a relatively simple modeling effort and making it much harder.

My goal in writing the paper was to develop a simple model that could easily replace their existing models. In particular, I wanted the model to accept the same parameters as the existing models. However, I do not personally have much experience with either diffusion resistors or the existing models. So I had to make some guesses. I would really appreciate it if someone that is familiar with them could give me feedback on the model presented in this paper.

In particular, I am interested in finding out

• If the two-terminal model that I present is in fact heavily used out there.
• If so, what exactly does the model look like (what is the constitutive equation and what are the parameters)
• How do people really extract the parameters?
• Whether the approach that I propose is well known, and if so, is it considered the best approach?
• Whether I made any mistakes, missed something, or could change the paper to make it better.

I'd appreciate any help you can give.

Thanks,
Ken