Tektronix TCP312A AC/DC Current Probe

The Tektronix TCP312A is an AC/DC current probe engineered for precision waveform measurement from DC to 100 MHz. It integrates with Tektronix oscilloscopes to deliver automatic scaling and on-screen current readout, eliminating manual calculations and reducing measurement error. The split-core construction enables non-invasive connection without circuit interruption, while low insertion impedance minimizes loading effects on the device under test. Visual status indicators monitor degauss state, probe open conditions, overload events, termination status, and probe compatibility.

– Technical Specifications

• Bandwidth: DC to 100 MHz
• Maximum DC current: 30 A
• Peak current: 50 A
• Minimum measurable current: 1 mA
• Rise time: ≤3.5 ns
• Maximum input voltage: 150 V
• AC/DC coupling: Supported
• Low DC drift and noise for improved low-level measurements
• Split-core construction accommodates wire sizes to 5 mm
• Cable length: 1.5 m
• Dimensions: 7.77 × 0.62 × 1.25 inches

– Key Features

• Automatic scaling with magnitude and unit display
• Probe degauss/autobalance calibration button
• Status indicators for degauss, probe open, overload, 50 Ω termination, and compatibility
• Operating temperature: 0°C to 50°C
• Humidity range: 5% to 95% RH
• Third-party safety certified per IEC 61010-1 and IEC 61010-2-032
• Certified for U.S., Canada, and European markets

– Typical Applications

• Power supplies (switching and linear topologies)
• Power inverters and converters
• Semiconductor device analysis (SCRs, IGBTs, MOSFETs, CMOS, BJTs)
• Electronic ballasts
• Motor drives and transportation systems
• Mobile communications equipment

– Compatibility & Integration

The TCP312A requires the TCPA300 Current Probe Amplifier. It connects to Tektronix oscilloscopes equipped with TEKPROBE Level II, TekConnect (with TCA-BNC adapter), or TekVPI (with TPA-BNC adapter) interfaces.