Agilent / Keysight 85033D Calibration Kit, 3.5 mm

The Agilent/Keysight 85033D is a 3.5 mm mechanical calibration kit for precise network analyzer calibration across DC to 6 GHz. It delivers metrology-grade performance through offset opens, offset shorts, broadband load terminations, and dual-beaded adapters - each engineered to minimize phase error and maximize connection repeatability.

Technical Specifications

• Model: 85033D


• Manufacturer: Agilent / Keysight


• Connector Type: 3.5 mm (male and female)


• Impedance: 50 ohms


• Frequency Range: DC to 6 GHz


• Return Loss:

Minimum 46 dB (DC to 1.3 GHz)

Minimum 44 dB (1.3 GHz to 3 GHz)

Minimum 38 dB (3 GHz to 6 GHz)

Key Features

• Broadband Load Terminations: Distributed resistive element on sapphire substrate ensures stability and return loss performance to 6 GHz.


• Offset Opens: Low-dielectric-constant plastic support with tightly controlled pin depth minimizes phase errors and compensation requirements.


• Offset Shorts: One-piece inner conductor design with integrated shorting plane delivers extremely repeatable connections and controlled phase response.


• Dual-Beaded Adapters: Connector architecture optimizes stability and minimizes return loss; nominal electrical lengths matched for non-insertable device calibration.


• OSL Holders: Two storage and measurement assemblies enable single-load calibration cycles for same-sex connectors.


• Calibration Definitions Disk: Nominal device definitions load directly into compatible network analyzers.


• 2.5 mm Hex Key: Included for secure fastening of calibration devices within holders.

Typical Applications Precision characterization of RF and microwave components with 3.5 mm connectors. Network analyzer system calibration. High-accuracy S-parameter and transmission measurements across broadband frequency spans.

Compatibility & Integration Designed for systems requiring 50 ohm calibration standards. Component pairing (male and female) supports both device port configurations. Calibration definitions are compatible with network analyzers accepting standard definition formats.