Can 16089 series Kelvin clip leads (16089A, 16089B, 16089C) measure AC resistance of components at higher frequency (for example 500kHz)?

Frequently Asked Questions (FAQs)SummaryThis article explain the reason of 16089 Kelvin clip leads does not support frequency higher than 100kHz and gives alternative solution.QuestionCan 16089 series Kelvin clip leads (16089A, 16089B, 16089C) measure AC resistance of components at higher frequency (for example 500kHz)?  Answer16089 series Kelvin clip leads (16089A, 16089B, 16089C) cover frequency range of 5 Hz to 100 kHz in the technical specification. Here is the brief introduction of 16089 series Kelvin clip . Description: This test fixture makes it possible to measure odd-shaped components that cannot be measured with conventional fixtures. It is equipped with two insulated Kelvin clips. Applicable instruments: E4980A/AL, E4981A, E4990A Frequency: 5 Hz to 100 kHz Maximum voltage: ±42 V peak max. (AC+DC) Operating temperature: 0 to 55°C Kelvin clip test lead is not advisable to be use for testing at frequency >100kHz, this will lead to measurement instability problem due to unstable strays and residuals at higher frequency. Hence, contributes to measurement error. For higher frequency > 100kHz, and if Kelvin clip is not required, we recommend using the 42941A Impedance Probe ( 20 Hz to 120 MHz) with the E4990A as an alternative. An alligator clip lead attachment is furnished with the 42941A, as shown below. Below is the brief introduction of 42941A Impedance Probe: Description: This impedance probe kit is designed for use with the E4990A-120. It provides the capability to perform in-circuit measurements (printed circuit patterns, the input/output impedance of circuits, etc.) with better accuracy and wider impedance coverage from 20 Hz to 120 MHz. DUTs can be connected by either using the pin probe, the clip lead (alligator clip adapter) or the BNC adapter. All probe adapter can be used from 20 Hz to 120 MHz. The pin probe is best for in-circuit, board-mounted components, The clip lead is for components too large for the pin probe. The BNC adapter is used to connect circuits or networks equipped with BNC connectors. Applicable instrument: E4990A-120 Frequency: 20 Hz to 120 MHz Maximum voltage: ±42 V peak max. (AC+DC) Operating temperature: –20 to +75°C (probe only)