Teledyne LeCroy T3RC0120-UM AC Current Probe, 50 mV/A, 120 A

The Teledyne LeCroy T3RC0120-UM is an AC current probe based on Rogowski coil technology, engineered for precision measurement of currents up to 120 A in embedded power systems and component-level design. With a sensitivity of 50 mV/A and bandwidth spanning 34 Hz to 30 MHz, this probe delivers accurate waveform capture across DC switching transients and high-frequency noise environments.

The Ultra Mini form factor defines this probe’s core strength. Its 1.7 mm coil sense cross-section enables insertion around tight power component geometries—inductors, capacitors, MOSFETs, and other TO220 devices—without mechanical interference. The 80 mm coil circumference accommodates conductors up to 80 mm diameter. Insertion impedance remains in the picohenry range, ensuring negligible circuit loading during measurement.

– Technical Specifications

• Measurement Type: AC Current (Rogowski Coil)
• Maximum Current: 120 A
• Sensitivity: 50 mV/A
• Bandwidth: 34 Hz to 30 MHz
• Voltage Insulation: 1.2 kV peak
• Coil Circumference: 80 mm
• Maximum Conductor Size: 80 mm
• Insertion Impedance: Low, picohenry range
• Attenuation Ratio: 10
• Operating Temperature: -40 °C to +125 °C
• Cable Length: 1 m
• Connector: BNC
• Weight: 180 g

– Key Features

• Ultra-compact 1.7 mm coil cross-section for access to congested PCB layouts
• Dual power option: battery or 12 V ±10% external DC adapter with center-positive connector
• Wide temperature range enables operation in harsh thermal environments
• Low circuit loading preserves signal integrity in sensitive measurements

– Typical Applications

• Embedded power system characterization
• MOSFET and IGBT switching waveform analysis
• Motor drive design and electric vehicle powertrains
• Renewable energy power converter development
• Long-term system monitoring and field maintenance
• Research and development across wide temperature ranges

– Compatibility & Integration

The probe connects via standard BNC to oscilloscopes with 1 MΩ input impedance. Full compatibility exists with all Teledyne LeCroy and Teledyne Test Tools oscilloscopes, plus the majority of third-party instruments with matching BNC termination.