Agilent/Keysight N2872A

The Keysight N2872A is a passive oscilloscope probe engineered for general-purpose signal acquisition across a DC to 350 MHz bandwidth. Delivering a 10:1 attenuation ratio, the probe presents 10 MΩ input resistance and 9.5 pF input capacitance when terminated into a 1 MΩ oscilloscope input, preserving signal integrity and minimizing circuit loading during measurements.

Technical Specifications

• Bandwidth: DC to 350 MHz


• Attenuation Ratio: 10:1


• Input Resistance: 10 MΩ (into 1 MΩ scope input)


• Input Capacitance: 9.5 pF


• Maximum Input Voltage: 400 V CAT I / 300 V CAT II


• Scope Compensation Range: 10–25 pF


• Adjustable Low Frequency (LF) compensation Physical Specifications


• Probe Head Diameter: 2.5 mm


• Cable Length: 1.3 m Environmental Operating Conditions


• Operating Temperature: 0 °C to +50 °C


• Storage Temperature: –40 °C to +70 °C


• Operating Humidity: 80% RH to 31 °C, decreasing linearly to 40% RH at 50 °C


• Operating Altitude: 2,000 m (6,561 ft)


• Pollution Degree: 2

Key Features The compact 2.5 mm probe head design accommodates measurements on high-density integrated circuits and surface-mount devices with fine-pitch leads. Automatic Probe ID readout on compatible oscilloscopes eliminates manual configuration overhead. Adjustable compensation enables optimization across the 10–25 pF scope input range, supporting precise frequency response matching.

Typical Applications The N2872A serves general-purpose analog and digital signal measurements in laboratory and field environments. Its 350 MHz bandwidth suits characterization of legacy and mid-range digital logic, embedded systems, and analog signal chains. The low input capacitance and high input resistance minimize loading effects on moderate-impedance circuits.

Compatibility & Integration The probe is fully compatible with Keysight InfiniiVision and Infiniium Series oscilloscopes equipped with 1 MΩ input termination. It is recommended for oscilloscope systems with bandwidth less than 350 MHz. The 1.3 m cable and included accessory suite - rigid and spring-loaded tips, IC caps for 0.5 mm to 1.27 mm pitch, ground blade, sprung hook, and trimmer tool - support flexible deployment across diverse component geometries.