Inductance of TCP305A

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User, Forum
Posted 3 years ago by User, Forum

Hi,

I am using TCP305A to measure the current through a very small value inductor like tens of nH. Want to know the effect of the probe inductance on the effective inductance of the inductor under test.

Answer
Expert, Tektronix Applications
Posted 3 years ago by Expert, Tektronix Applications

Hello,

The TCP305 has Insertion Impedance of 0.02 Ohm @ 1 MHz, 0.1 Ohm @ 10 MHz, and 0.35 Ohm @ 50 MHz.

You can find this spec on page 50 of the user manual linked below.

https://download.tek.com/manual/TCPA300-400-Amplifiers-and-TCP300A-400-Current-Probe-User-Manual-077118302.pdf

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