Re: Tunnel diode capacitance test

Ed Breya

I'd suggest that you don't worry about it. There will be some fixed holder capacitance due to the package, but the rest is non-linear, and depends on bias voltage and circuit conditions. If there are any specs, they would have to be at certain conditions, that you could probably replicate. To make decent measurements, you have to keep the AC signal test voltage as low as possible (like a few to tens of mV) to avoid junction activation and effects. A VNA probably has enough dynamic range to easily handle it with small test signals. The bridge may work too, if it can operate well at low enough voltage.


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