Ultra-FastCommon Mode Choke

■ >4.5 GHz 3dB Bandwidth (including cables)

■ 1.5 mH Common Mode Inductance at 1 kHz

■ < -40 dB Return Loss (100 kHz - 200 MHz)

■ Optimized for connecting
UFCS Series Current Shunts to Oscilloscopes

■ Suitable for use with network analyzers

The PMK UFCS-Choke is the ideal companion for PMK’s ultra-fast UFCS current shunts, creating a high-bandwidth measurement path from the shunt directly to a 50 Ω oscilloscope input. Designed for fast switching power electronics, WBG switching-loss analysis, and pulse-current measurements, the combination preserves the exceptional signal fidelity of the UFCS shunts while helping to suppress unwanted common-mode currents in ground-referenced test setups.

With more than 4.5 GHz bandwidth as an assembly, 1.5 mH common-mode inductance, and excellent 50 Ω transmission-line performance, the UFCS-Choke enables engineers to capture fast current transients with confidence. Used together with UFCS shunts, it supports precise, low-inductance current measurement while reducing measurement artifacts caused by ground loops and high-speed common-mode disturbances.

For engineers working with GaN, SiC, and other fast-switching power devices, this combined PMK solution provides a practical and robust way to connect ultra-fast shunt measurements to standard laboratory instruments—delivering clarity, bandwidth, and measurement integrity where conventional current probes often reach their limits.

Models and Specifications

			Order number	Article
£560.00 GBP excluding VAT Lead time 2-4 weeks		Manual	UFCS-CHOKE	50 Ohm impedance matched, common mode choke, recommended for direct input to oscilloscopes

Ultra-Fast Current Shunt Models

For the Ultra-Fast Common Mode Choke

		Article number	Output	Resistance	Bandwidth (3dB)	Insertion inductance	Info
£350.00 GBP excluding VAT UK stock — Qty: 5	Datasheet Manual 3D-file Altiumlib	UFCS-R001	SMA (F)	1 mΩ	>600 MHz	120 pH	Single pack
£350.00 GBP excluding VAT UK stock — Qty: 5	Datasheet Manual 3D-file Altiumlib	UFCS-R005	SMA (F)	5 mΩ	>900 MHz	140 pH	Single pack
£350.00 GBP excluding VAT UK stock — Qty: 4	Datasheet Manual 3D-file Altiumlib	UFCS-R011	SMA (F)	11 mΩ	>1GHz	110 pH	Single pack
£350.00 GBP excluding VAT UK stock — Qty: 5	Datasheet Manual 3D-file Altiumlib	UFCS-R024	SMA (F)	24 mΩ	>1 GHz	140 pH	Single pack
£350.00 GBP excluding VAT UK stock — Qty: 5	Datasheet Manual 3D-file Altiumlib	UFCS-R052	SMA (F)	52 mΩ	>900 MHz	150 pH	Single pack