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Tektronix TCP312A Used

Tektronix TCP312A 100 MHZ, AC/DC Current Probe, BNC Interface

100 MHZ, AC/DC Current Probe, BNC Interface

The Tektronix TCP312A is one of our refurbished 100 MHz AC/DC Current Probes with a BNC Interface.

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Tektronix TCP312A Features:

  • Automatic scaling and units2 - Oscilloscope on-screen readout of magnitude and amps reduces measurement errors with no more hand calculations
  • AC/DC input coupling
  • Low insertion impedance reduces device under test loading
  • Split-core construction allows easy circuit connection
  • Status indicators provide visual operating status and notification of potential error conditions - degauss, probe open, overload, not terminated into 50 ?, noncompatible probe type
  • Low DC drift and noise allows improved low-level current measurements
  • 3rd party safety certification
  • 2 Requires a TDS TEKSCOPE oscilloscope or a TekConect oscilloscope with TCA-BNC adapter

AC/DC measurement capabilities

  • DC - 100 MHz, Current Probe Amplifier (TCPA300) uses:
  • DC - 100 MHz, 30 A DC (TCP312A-Factory Refurbished)
  • DC - 50 MHz, 50 A DC (TCP305A)
  • DC - 15 MHz, 150 A DC (TCP303)
  • DC - 50 MHz, Current Probe Amplifier (TCPA400) Uses:
  • DC - 2 MHz, 750 A DC1 (TCP404XL) (500 A DC Continuous)
  • 1Derated with duty cycle


  • Development and analysis solutions for designers, installers, and service personnel in telecom, data comm, computer, and semiconductor power electronics environments for:
    • 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)
    • Meets today's AC/DC current measurement applications

The Tektronix TCPA300 amplifier, when used with TCP312A-Factory Refurbished, TCP305A, or TCP303 probes, provides a wide range of current measurement capability and spans the gap between low-level milliamp measurements to very high current levels. These three probes provide current measurement capabilities of 30 A, 50 A, and 150 A DC continuous. For even higher current levels, the TCPA400 amplifier with the TCP404XL current probe measures 500 A DC continuous and 750 A DC continuous, derated with duty cycle.