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 | |||
|---|---|---|---|---|
|
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 | |||
|---|---|---|---|---|---|---|---|---|
|
UFCS-R001 | SMA (F) | 1 mΩ | >600 MHz | 120 pH | Single pack | ||
|
UFCS-R005 | SMA (F) | 5 mΩ | >900 MHz | 140 pH | Single pack | ||
|
UFCS-R011 | SMA (F) | 11 mΩ | >1GHz | 110 pH | Single pack | ||
|
UFCS-R024 | SMA (F) | 24 mΩ | >1 GHz | 140 pH | Single pack | ||
|
UFCS-R052 | SMA (F) | 52 mΩ | >900 MHz | 150 pH | Single pack | ||
UFCS-Chokes
1 product
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APEC 2026 | Booth 801, 609
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ECCE 2026 | North America
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The Battery Show 2026
