The Keysight 16451B is a dielectric test fixture for measuring the dielectric constant and dissipation factor of solid dielectric materials in compliance with ASTM D150. Operating on the parallel plate method, it forms a capacitor by sandwiching the test material between two electrodes and incorporates a guard electrode to suppress fringe capacitance effects. The fixture connects to LCR meters and impedance analyzers via 4-terminal pair BNC connectors and operates from DC to 30 MHz. Four interchangeable electrode sets—A, B, C, and D—accommodate flat, smooth, rough, or extremely thin materials across sample diameters from 10 mm to 56 mm and thicknesses up to 10 mm. The 16451B withstands ±42 V peak maximum (AC + DC) and functions in ambient temperatures from 0 °C to 55 °C at humidity levels up to 95% RH at 40 °C. Complete with multiple electrode configurations, attachment for error compensation, and carrying case, this fixture delivers accurate characterization of dielectric properties across wide material variety and frequency spans.
Technical Specifications
• Frequency Range: DC to 30 MHz
• Maximum Voltage: ±42 V peak (AC + DC combined)
• Connector Type: 4-Terminal Pair, BNC
• Operating Temperature: 0 °C to 55 °C
• Operating Humidity: ≤95% RH at 40 °C
• Cable Length: Approximately 0.8 m
• Weight: Approximately 3.7 kg including accessories
– Key Features
• Guard electrode design minimizes stray capacitance at electrode edges
• Four electrode sets for diverse material types and geometries
• Electrode A (38 mm diameter) for flat, smooth materials; sample diameter 40–56 mm
• Electrode B (5 mm diameter) for flat, smooth materials; sample diameter 40–56 mm
• Electrodes C and D for rough or extremely thin materials; sample diameter 10–56 mm
• Thin film electrode options for sample diameters up to 50 mm (Electrode C) and 14 mm (Electrode D)
• All sample types limited to thickness ≤10 mm
• Includes error compensation attachment and hex key for electrode replacement
– Typical Applications
• Characterization of polymer films and sheets
• Evaluation of ceramic and composite dielectric properties
• Quality control testing of insulating materials
• Research and development of advanced dielectric systems
– Compatibility & Integration
Works with LCR meters and impedance analyzers supporting 4-terminal pair measurement configuration. Compatible with Keysight 4194A and 4294A impedance analyzers.
