July 23rd, 2009
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Diode Data
Diode Data
i need the varactor diode data sheet. 1N5139-1N5148. ?


with the graph of reverse voltage

http://www.knoxsemiconductor.com/catalog/1N5139-5148ASERIES.PDF

If the manufacturer, Knox, doesn't publish a graph of reverse voltage, then no other datasheet publishers will have it.

However, these diodes made by Knox, are very similar:

http://www.knoxsemiconductor.com/catalog/SMV2042SERIES.PDF

and charts exist for these commercial diodes:

http://www.knoxsemiconductor.com/catalog/2042SERIESCURVES.PDF

.



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Diode AS søker en It konsulent

Calculating the thickness of a pn diode?


After much hunting for the appropriate data, and searching on the internet, I have finally hit a wall. Is there anyone who can give guidance on how to get the thickness of a pn diode? Given doping level (Nd), saturation current, series resistance, built-in potential, ideality factor (n), and the cross sectional area.
I have tried using the equation,
L = (Dt)^1/2, where L is the length, D is the diffusion constant and t is the recombination minority carrier lifetime. It is taken from a Semiconductor book. Am I correct to use it?

I am sure that manufacturers have rules of thumb about junction thickness, however I suspect it is probably proprietary information and that's why you can't find reference to it on the internet. Try a good solid state physics book. Search on amazon.com.

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