TCP404XL Tektronix Current Probe

The TCP404XL is a Current Probe from Tektronix. Current Probes are an integral part of any electrical power testing toolbox to ensure accurate measurements, reliability, and safety. Purchase a current probe set with your oscilloscope. Probes can use pulse waveforms to test components without removing them from circuits with in-circuit capabilities. Choose the probe that complements your system. We carry new and used current probes from major industry brands.
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Additional Features:

  • Requires the TCPA400
  • AC / DC Measurement Capabilities: DC – 2 MHz
  • 750 A DC
  • Automatic Scaling and Units – Oscilloscope On-Screen Readout of Magnitude and Units Reduces Measurement Errors with No More Hand Calculations
  • AC / DC Input Coupling
  • Low Insertion Impedance Reduces Device Under Test Loading
  • Small Mechanical Package – Less Desktop Space, Easier Storage and Handling
  • Split-Core Construction Allows Easy Circuit Connection
  • Status Indicators Provide Visual Operating Status and Notificatin of Potential Error Conditions
  • Lower DC Drift and Noise Allows Improved Low Level Current Measurements
  • Certified for U.S., Canada, and Europe


  • Power supplies (switching and linear)
  • Semiconductor devices (SCRs, IGBTs, MOSFETs, CMOS, BJTs)
  • Power inverters/converters
  • Electronic ballasts
  • Industrial/consumer electronics
  • Mobile communications (phone, satellite, relay stations)
  • Motor drives
  • Transportation systems (electronic vehicles, electric trains, locomotives, avionics)

The Tektronix TCPA400 amplifier with the TCP404XL current probe measures 500 A DC continuous and 750 A DC continuous, derated with duty cycle. 

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