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In this video, I do an example of calculating the reverse saturation current density of a diode, and I give some of my best practices that I use when solving these problems: start with the simplest possible formula, cancel all the units first, and then check to see if your answer is reasonable at every step.
This is part of my series on semiconductor physics (often called Electronics 1 at university). This is based on the book Semiconductor Physics and Devices by Donald Neamen, as well as the EECS 170A/174 courses taught at UC Irvine.
Hope you found this video helpful, please post in the comments below anything I can do to improve future videos, or suggestions you have for future videos.
