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The IWATSU Rogowski probe portfolio offers flexible, non-saturating current measurement solutions for a wide range of power electronics applications. With coil diameters as thin as 1.0 mm for probing narrow vias and as robust as 3.0 mm for higher voltage insulation (up to 5 kV peak), these sensors are optimized for direct probing of MOSFETs, IGBTs, and other high-speed devices.
The family supports broad current ranges from 30 A up to 30,000 A, ensuring coverage from low-level switching signals to extreme high-current testing—without risk of magnetic saturation. Bandwidths extend up to 100 MHz, enabling accurate observation of fast switching waveforms in advanced SiC and GaN devices.
Design options include:
■ Ultra-thin coils (1.0–1.7 mm) for probing in confined spaces.■ High-temperature variants rated up to +150 °C for demanding environments.
■ Multiple coil lengths (100–500 mm) for setup flexibility.
■ Shielded designs for enhanced noise immunity.
All probes feature wide operating temperature ranges, high measurement stability, and application-tailored sensitivity, making them ideal for precision current analysis in modern power electronics.
Rogowski SS-280A Series
■ Equipped with 1.7mm Thin Sensor Coil Wire Diameter, suitable for direct probing to TO Type MOSFET, IGBT Devices which are widely used for Power Electronics Equipment, such as Switching Power Supplies.
■ Achieved 30MHz Measurement Frequency Bandwidth, suitable for observation of High-Speed Switching Waveforms.
■ Measurement Range of 30A to 30,000A contributes to Wade Range Current Measurement.
■ High Current Test can be performed without worrying about Magnetic Saturation.
■ Sensor Coil Temperature Range: -40ºC to +125ºC
| Order number | Bandwidth | Current [max. A peak] | Noise | Sensitivity | Peak di/dt | Absolute Max. di/dt - Peak | Absolute Max. di/dt - RMS | |||
|---|---|---|---|---|---|---|---|---|---|---|
|
SS-281A | 110 Hz - 30 MHz | max. 30 A peak | 3.5 mV rms | 200 mV/A | 2 kA/µs | 80 kA/µs | 1.0 kA/µs | ||
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SS-282A | 65 Hz - 30 MHz | max. 60 A peak | 2.5 mV rms | 100 mV/A | 4 kA/µs | 80 kA/µs | 1.5 kA/µs | ||
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SS-283A | 32 Hz - 30 MHz | max. 120 A peak | 2.0 mV rms | 50 mV/A | 8 kA/µs | 80 kA/µs | 1.5 kA/µs | ||
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SS-284A | 9 Hz - 30 MHz | max. 300 A peak | 1.8 mV rms | 20 mV/A | 20 kA/µs | 80 kA/µs | 1.5 kA/µs | ||
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SS-285A | 6 Hz - 30 MHz | max. 600 A peak | 1.8 mV rms | 10 mV/A | 40 kA/µs | 80 kA/µs | 1.5 kA/µs | ||
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SS-286A | 3 Hz - 30 MHz | max. 1200 A peak | 1.8 mV rms | 5 mV/A | 80 kA/µs | 80 kA/µs | 2.0 kA/µs | ||
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SS-287A | 2 Hz - 30 MHz | max. 3000 A peak | 1.4 mV rms | 2 mV/A | 80 kA/µs | 80 kA/µs | 2.0 kA/µs | ||
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SS-288A | 2 Hz - 30 MHz | max. 6000 A peak | 1.4 mV rms | 1 mV/A | 80 kA/µs | 80 kA/µs | 2.0 kA/µs | ||
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SS-289A | 2 Hz - 30 MHz | max. 12000 A peak | 1.4 mV rms | 0.5 mV/A | 80 kA/µs | 80 kA/µs | 2.0 kA/µs | ||
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SS-280A | 2 Hz - 30 MHz | max. 30000 A peak | 1.4 mV rms | 0.2 mV/A | 80 kA/µs | 80 kA/µs | 0.5 kA/µs | ||
SS-280A-H Series (High Temperature)
■ Equipped with 1.7mm Thin Sensor Coil Wire Diameter, suitable for direct probing to TO Type MOSFET, IGBT Devices which are widely used for Power Electronics Equipment, such as Switching Power Supplies.
■ Achieved 30MHz Measurement Frequency Bandwidth, suitable for observation of High-Speed Switching Waveforms.
■ Measurement Range of 30A to 30,000A contributes to Wade Range Current Measurement.
■ High Current Test can be performed without worrying about Magnetic Saturation.
■ Sensor Coil Temperature Range: -40ºC to +150ºC
| Order number | Bandwidth | Current [max. A peak] | Noise | Sensitivity | Peak di/dt | Absolute Max. di/dt - Peak | Absolute Max. di/dt - RMS | |||
|---|---|---|---|---|---|---|---|---|---|---|
|
SS-281A-H | 110 Hz - 30 MHz | max. 30 A peak | 3.5 mV rms | 200 mV/A | 2 kA/µs | 80 kA/µs | 1.0 kA/µs | ||
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SS-282A-H | 65 Hz - 30 MHz | max. 60 A peak | 2.5 mV rms | 100 mV/A | 4 kA/µs | 80 kA/µs | 1.5 kA/µs | ||
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SS-283A-H | 32 Hz - 30 MHz | max. 120 A peak | 2.0 mV rms | 50 mV/A | 8 kA/µs | 80 kA/µs | 1.5 kA/µs | ||
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SS-284A-H | 9 Hz - 30 MHz | max. 300 A peak | 1.8 mV rms | 20 mV/A | 20 kA/µs | 80 kA/µs | 1.5 kA/µs | ||
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SS-285A-H | 6 Hz - 30 MHz | max. 600 A peak | 1.8 mV rms | 10 mV/A | 40 kA/µs | 80 kA/µs | 1.5 kA/µs | ||
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SS-286A-H | 3 Hz - 30 MHz | max. 1200 A peak | 1.8 mV rms | 5 mV/A | 40 kA/µs | 40 kA/µs | 2.0 kA/µs | ||
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SS-287A-H | 2 Hz - 30 MHz | max. 3000 A peak | 1.4 mV rms | 2 mV/A | 40 kA/µs | 40 kA/µs | 2.0 kA/µs | ||
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SS-288A-H | 2 Hz - 30 MHz | max. 6000 A peak | 1.4 mV rms | 1 mV/A | 40 kA/µs | 40 kA/µs | 2.0 kA/µs | ||
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SS-289A-H | 2 Hz - 30 MHz | max. 12000 A peak | 1.4 mV rms | 0.5 mV/A | 40 kA/µs | 40 kA/µs | 2.0 kA/µs | ||
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SS-280A-H | 2 Hz - 30 MHz | max. 30000 A peak | 1.4 mV rms | 0.2 mV/A | 50 kA/µs | 50 kA/µs | 0.5 kA/µs | ||
Power Adapter for the Rogowski Coil Series
Specifically made for our Rogowski probes. Allows continuous operation of the probes without having to worry about its battery power status.
| Order number | Article | |||
|---|---|---|---|---|
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SS-PWR-US | AC adapter for battery powered IWATSU® Rogowski Current Probes, US plug | |
SS-290 Series
The SS-290 Series has an additional sensitivity boost of ±2%(-10ºC ～ +60ºC) + additional ±300ppm/ºC for -10ºC or lower and +60ºC or higher.
| Order number | Bandwidth | Current [max. A peak] | Noise | Sensitivity | Peak di/dt | Absolute Max. di/dt - Peak | Absolute Max. di/dt - RMS | |||
|---|---|---|---|---|---|---|---|---|---|---|
|
SS-293S | 1 Hz - 20 MHz | max. 1200 A peak | 3.5 mV rms | 5 mV/A | 60 kA/µs | 80 kA/µs | 3.0 kA/µs | ||
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SS-293L | 1 Hz - 10 MHz | max. 1200 A peak | 3.5 mV rms | 5 mV/A | 32 kA/µs | 80 kA/µs | 3.0 kA/µs | ||
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SS-294S | 0.8 - 20 MHz | max. 3000 A peak | 2.0 mV rms | 2 mV/A | 80 kA/µs | 80 kA/µs | 3.0 kA/µs | ||
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SS-294L | 0.8 - 10 MHz | max. 3000 A peak | 2.0 mV rms | 2 mV/A | 80 kA/µs | 80 kA/µs | 3.0 kA/µs | ||
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SS-295S | 0.6 - 20 MHz | max. 6000 A peak | 1.4 mV rms | 1 mV/A | 80 kA/µs | 80 kA/µs | 3.0 kA/µs | ||
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SS-295L | 0.6 - 10 MHz | max. 6000 A peak | 1.4 mV rms | 1 mV/A | 80 kA/µs | 80 kA/µs | 3.0 kA/µs | ||
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SS-296S | 0.4 - 20 MHz | max. 12000 A peak | 1.2 mV rms | 0.5 mV/A | 80 kA/µs | 80 kA/µs | 3.0 kA/µs | ||
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SS-296L | 0.4 - 10 MHz | max. 12000 A peak | 1.2 mV rms | 0.5 mV/A | 80 kA/µs | 80 kA/µs | 3.0 kA/µs | ||
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SS-297S | 0.2 - 20 MHz | max. 30000 A peak | 1.0 mV rms | 0.2 mV/A | 80 kA/µs | 80 kA/µs | 3.0 kA/µs | ||
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SS-297L | 0.2 - 10 MHz | max. 30000 A peak | 1.0 mV rms | 0.2 mV/A | 80 kA/µs | 80 kA/µs | 3.0 kA/µs | ||
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SS-298S | 0.1 - 20 MHz | max. 60000 A peak | 1.0 mV rms | 0.1 mV/A | 80 kA/µs | 80 kA/µs | 3.0 kA/µs | ||
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SS-298L | 0.1 - 10 MHz | max. 60000 A peak | 1.0 mV rms | 0.1 mV/A | 80 kA/µs | 80 kA/µs | 3.0 kA/µs | ||
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SS-299S | 0.1 - 5 MHz | max. 120000 A peak | 1.0 mV rms | 0.05 mV/A | 80 kA/µs | 80 kA/µs | 3.0 kA/µs | ||
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SS-299L | 0.1 - 5 MHz | max. 120000 A peak | 1.0 mV rms | 0.05 mV/A | 80 kA/µs | 80 kA/µs | 3.0 kA/µs | ||
Power Adapter for the Rogowski Coil Series
Specifically made for our Rogowski probes. Allows continuous operation of the probes without having to worry about its battery power status.
| Order number | Article | |||
|---|---|---|---|---|
|
|
|
SS-PWR-US | AC adapter for battery powered IWATSU® Rogowski Current Probes, US plug | |
SS-620 Series
■ Equipped with 3.0mm Thin Sensor Coil Wire Diameter, and Max. 5kV peak withstanding Voltage.
■ Wide Range Current Measurement from 60A to 30,000A.
■ High Current Test can be performed without worrying about Magnetic Saturation.
■ Four(4) Types of Coil Length (100 to 500mm) are selectable.
| Order number | Bandwidth | Current [max. A peak] | Noise | Sensitivity | Peak di/dt | Absolute Max. di/dt - Peak | Absolute Max. di/dt - RMS | |||
|---|---|---|---|---|---|---|---|---|---|---|
|
SS-622S | 25 Hz - 25 MHz | max. 60 A peak | 5.0 mV rms | 100 mV/A | 4 kA/µs | 80 kA/µs | 3.0 kA/µs | ||
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SS-622M | 25 Hz - 20 MHz | max. 60 A peak | 5.0 mV rms | 200 mV/A | TBD | 80 kA/µs | 3.0 kA/µs | ||
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SS-623S | 10 Hz - 25 MHz | max. 120 A peak | 5.0 mV rms | 50 mV/A | 6 kA/µs | 80 kA/µs | 3.0 kA/µs | ||
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SS-623M | 10 Hz - 20 MHz | max. 120 A peak | 5.0 mV rms | 50 mV/A | 8 kA/µs | 80 kA/µs | 3.0 kA/µs | ||
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SS-624S | 4 Hz - 25 MHz | max. 300 A peak | 5.0 mV rms | 20 mV/A | 16 kA/µs | 80 kA/µs | 3.0 kA/µs | ||
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SS-624M | 4 Hz - 20 MHz | max. 300 A peak | 5.0 mV rms | 20 mV/A | 20 kA/µs | 80 kA/µs | 3.0 kA/µs | ||
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SS-625S | 2 Hz - 25 MHz | max. 600 A peak | 5.0 mV rms | 10 mV/A | 32 kA/µs | 80 kA/µs | 3.0 kA/µs | ||
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SS-625M | 2 Hz - 20 MHz | max. 600 A peak | 5.0 mV rms | 10 mV/A | 40 kA/µs | 80 kA/µs | 3.0 kA/µs | ||
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SS-626S | 1 Hz - 25 MHz | max. 1200 A peak | 3.5 mV rms | 5 mV/A | 60 kA/µs | 80 kA/µs | 3.0 kA/µs | ||
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SS-626M | 1 Hz - 20 MHz | max. 1200 A peak | 3.5 mV rms | 5 mV/A | 80 kA/µs | 80 kA/µs | 3.0 kA/µs | ||
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SS-627S | 0.8 Hz - 25 MHz | max. 3000 A peak | 2.0 mV rms | 2 mV/A | 80 kA/µs | 80 kA/µs | 3.0 kA/µs | ||
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SS-627M | 0.8 Hz - 20 MHz | max. 3000 A peak | 2.0 mV rms | 2 mV/A | 80 kA/µs | 80 kA/µs | 3.0 kA/µs | ||
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SS-628S | 0.6 Hz - 25 MHz | max. 6000 A peak | 1.4 mV rms | 1 mV/A | 80 kA/µs | 80 kA/µs | 3.0 kA/µs | ||
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SS-628M | 0.6 Hz - 20 MHz | max. 6000 A peak | 1.4 mV rms | 1 mV/A | 80 kA/µs | 80 kA/µs | 3.0 kA/µs | ||
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SS-629S | 0.4 Hz - 25 MHz | max. 12000 A peak | 1.2 mV rms | 0.5 mV/A | 80 kA/µs | 80 kA/µs | 3.0 kA/µs | ||
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SS-629M | 0.4 Hz - 20 MHz | max. 12000 A peak | 1.2 mV rms | 0.5 mV/A | 80 kA/µs | 80 kA/µs | 3.0 kA/µs | ||
Power Adapter for the Rogowski Coil Series
Specifically made for our Rogowski probes. Allows continuous operation of the probes without having to worry about its battery power status.
| Order number | Article | |||
|---|---|---|---|---|
|
|
|
SS-PWR-US | AC adapter for battery powered IWATSU® Rogowski Current Probes, US plug | |
SS-630 Series
The Rogowski SS-630 Series is great for high current applications with a max peak current of 30,000 A.
| Order number | Bandwidth | Current [max. A peak] | Noise | Sensitivity | Peak di/dt | Absolute Max. di/dt - Peak | Absolute Max. di/dt - RMS | |||
|---|---|---|---|---|---|---|---|---|---|---|
|
SS-630S | 0.2 Hz - 20 MHz | max. 30000 A peak | 1.1 mV rms | 0.2 mV/A | 80 kA/µs | 80 kA/µs | 3.0 kA/µs | ||
|
SS-630M | 0.2 Hz - 25 MHz | max. 30000 A peak | 1.1 mV rms | 0.2 mV/A | 80 kA/µs | 80 kA/µs | 3.0 kA/µs | ||
Power Adapter for the Rogowski Coil Series
Specifically made for our Rogowski probes. Allows continuous operation of the probes without having to worry about its battery power status.
| Order number | Article | |||
|---|---|---|---|---|
|
|
|
SS-PWR-US | AC adapter for battery powered IWATSU® Rogowski Current Probes, US plug | |
SS-660 / SS-660P Series
With its extreme thin coil diameter of only 1mm, the Rogowski SS-660 Series is particularly useful for measurements with narrow through-holes or vias.
■ Equipped with 1.0mm Extreme thin Sensor Coil Wire Diameter (1.2mm for P Type), suitable for direct probing to narrow spaces on Surface Mount Devices.
■ Achieved 30MHz Measurement Frequency Bandwidth, suitable for observation of High-Speed Switching Waveforms.
■ Wide Range Current Measurement Range of 60A to 1,200A.
■ High Current Test can be performed without worrying about Magnetic Saturation.
■ Sensor Coil Temperature Range : -40ºC to +125ºC
| Order number | Bandwidth | Current [max. A peak] | Noise | Sensitivity | Peak di/dt | Absolute Max. di/dt - Peak | Absolute Max. di/dt - RMS | |||
|---|---|---|---|---|---|---|---|---|---|---|
|
SS-662 | 110 Hz - 30 MHz | max. 60 A peak | 5.0 mV rms | 100 mV/A | 4 kA/µs | 80 kA/µs | 3.0 kA/µs | ||
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SS-662P | 110 Hz - 30 MHz | max. 60 A peak | 5.0 mV rms | 100 mV/A | 4 kA/µs | 80 kA/µs | 3.0 kA/µs | ||
|
SS-663 | 65 Hz - 30 MHz | max. 120 A peak | 3.5 mV rms | 50 mV/A | 8 kA/µs | 80 kA/µs | 3.0 kA/µs | ||
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SS-663P | 65 Hz - 30 MHz | max. 120 A peak | 3.5 mV rms | 50 mV/A | 8 kA/µs | 80 kA/µs | 3.0 kA/µs | ||
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SS-664 | 32 Hz - 30 MHz | max. 300 A peak | 2.5 mV rms | 20 mV/A | 20 kA/µs | 80 kA/µs | 3.0 kA/µs | ||
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SS-664P | 32 Hz - 30 MHz | max. 300 A peak | 2.5 mV rms | 20 mV/A | 20 kA/µs | 80 kA/µs | 3.0 kA/µs | ||
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SS-665 | 17 Hz - 30 MHz | max. 600 A peak | 2.0 mV rms | 10 mV/A | 40 kA/µs | 80 kA/µs | 3.0 kA/µs | ||
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SS-665P | 17 Hz - 30 MHz | max. 600 A peak | 2.0 mV rms | 10 mV/A | 40 kA/µs | 80 kA/µs | 3.0 kA/µs | ||
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SS-666 | 9 Hz - 30 MHz | max. 1200 A peak | 1.8 mV rms | 5 mV/A | 80 kA/µs | 80 kA/µs | 3.0 kA/µs | ||
|
SS-666P | 9 Hz - 30 MHz | max. 1200 A peak | 1.8 mV rms | 5 mV/A | 80 kA/µs | 80 kA/µs | 3.0 kA/µs | ||
Power Adapter for the Rogowski Coil Series
Specifically made for our Rogowski probes. Allows continuous operation of the probes without having to worry about its battery power status.
| Order number | Article | |||
|---|---|---|---|---|
|
|
|
SS-PWR-US | AC adapter for battery powered IWATSU® Rogowski Current Probes, US plug | |
SS-680 Series
■ Achieved 100MHz Measurement Frequency Bandwidth, suitable for evaluation of High-Speed Power Devices,such as SiC and GaN, etc.
■ Downsizing and Low-profile of the Probe Head contribut Low-Ls Measurement.
■ Max. 12,000A Measurement Capability. High Current Test can be performed without worrying about Magnetic Saturation.
■ Shielded Senser Coil contributes to High-Performance against external environment, such as external noises, etc.
■ Sensor Coil Temperature Range : -10ºC to +70ºC
■ Max. Peak Voltage : 1.2kV
| Order number | Bandwidth | Current [max. A peak] | Noise | Sensitivity | Peak di/dt | Absolute Max. di/dt - Peak | Absolute Max. di/dt - RMS | |||
|---|---|---|---|---|---|---|---|---|---|---|
|
SS-683 | 65 Hz - 100 MHz | max. 120 A peak | 1.8 mV rms | 10 mV/A | 30 kA/µs | 150 kA/µs | 3.0 kA/µs | ||
|
SS-684 | 32 Hz - 100 MHz | max. 300 A peak | 1.8 mV rms | 5 mV/A | 85 kA/µs | 150 kA/µs | 3.0 kA/µs | ||
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SS-685 | 15 Hz - 100 MHz | max. 600 A peak | 1.8 mV rms | 2 mV/A | 150 kA/µs | 150 kA/µs | 3.0 kA/µs | ||
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SS-686 | 8 Hz - 100 MHz | max. 1200 A peak | 1.8 mV rms | 1 mV/A | 90 kA/µs | 90 kA/µs | 3.0 kA/µs | ||
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SS-687 | 5 Hz - 50 MHz | max. 3000 A peak | 1.8 mV rms | 0.5 mV/A | 90 kA/µs | 90 kA/µs | 3.0 kA/µs | ||
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SS-688 | 3 Hz - 30 MHz | max. 6000 A peak | 1.8 mV rms | 0.2 mV/A | 90 kA/µs | 90 kA/µs | 3.0 kA/µs | ||
|
SS-689 | 2 Hz - 30 MHz | max. 12000 A peak | 1.8 mV rms | 0.1 mV/A | 90 kA/µs | 90 kA/µs | 3.0 kA/µs | ||
Power Adapter for the Rogowski Coil Series
Specifically made for our Rogowski probes. Allows continuous operation of the probes without having to worry about its battery power status.
| Order number | Article | |||
|---|---|---|---|---|
|
|
|
SS-PWR-US | AC adapter for battery powered IWATSU® Rogowski Current Probes, US plug | |
Iwatsu® Rogowski Coil Series
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