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E5402A Low Profile, Pro Series Soft Touch Connectorless Probe - Single-ended, for 90-pin Cable

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Starting From US$ 4,208

Typical Configuration  

Typical Configuration

E5402A Probe, 34 channel SE right angle soft touch pro connectorless, connects to 90-pin LA cable

  • R-51B-001-C Return to Keysight Warranty - 1 year


Prices for: United States

* Prices are subject to change without notice. Prices shown are Manufacturer's Suggested Retail Prices (MSRP). Prices shown are exclusive of taxes.

Key Features & Specifications

Notice to EU customers: This product is no longer available due to lack of compliance with EU RoHS directive 2011/65/EU. Keysight will continue service and support to the end of worldwide support life.

Signal Access

  • 34 channels: 32 single-ended data, 2 single-ended or differential clock

Probe Performance

  • < 0.7 pF equivalent load capacitance
  • > 2.5 Gb/s maximum data rate
  • Measure signals with as little as 250 mV p-p signal amplitude


  • Requires up-front design of pro series soft touch connectorless footprint on PC board (no connector on the target board)
  • Micro spring-pin technology provides reliable contact to signal pads even when probing uneven or contaminated board surfaces
  • Top-side retention module eliminates need to access back of the board

Compatible With:

  • Logic analyzers with 90-pin cable connectors Logic Analyzer Cable Connectors
  • All board surfaces, including lead free
  • Industry-standard connectorless footprint


The Keysight E5402A low profile, pro-series soft touch connectorless probe provides access to signals in height-restricted areas like card cages and devices in adjacent slots. The 34-channel, single-ended, probe uses a pliable micro-spring pin design with a four-point crown tip that provides reliable contact even for contaminated or uneven board surfaces. With less than 0.7 pF loading and more than 2.5 Gbits/s rate, these probes are ideal for accurately capturing high-speed signals without impacting the performance of the circuit. The E5402A includes five retention modules. Order an E5412A to get an additional kit of five retention modules. This probe can be used with any logic analyzer with a 90-pin cable connector.

Logic Analyzers with 40-pin and 90-pin Cable Connectors

Compare footprints of the E5400A Pro Series and E5300A families of soft touch connectorless probes