Can anyone explain impedance in a datasheet? What does this mean:

(50 uH + 5 ohm) || 50 ohm

Line impedance stabilization network (LISN). Like this one : schwarzbeck.de/Datenblatt/k8124.pdf.

  • 1
    \$\begingroup\$ The data sheet for what? What kind of impedance? Input impedance? Output impedance? Transfer impedance? Characteristic impedance? \$\endgroup\$
    – The Photon
    Commented Jan 27, 2022 at 6:22

1 Answer 1


If you post the datasheet that you're reading I could answer it with more confidence, but what you wrote here can be read as a \$50 \ \mathrm{\mu H}\$ inductance in series with a \$ 5 \ \Omega\$ resistance and all that in parallel with a \$50 \ \Omega\$ resistance. Like this:


simulate this circuit – Schematic created using CircuitLab

  • \$\begingroup\$ I undeleted this because it appears to be a good answer \$\endgroup\$
    – Voltage Spike
    Commented Jan 27, 2022 at 7:32

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