Test Probe Fixture

The Test Probe Fixture is a precision component of an Electrical Testing Chamber designed to mount, align, and secure electrical test probes in specific configurations. It ensures consistent contact pressure and positioning accuracy during electrical testing procedures such as continuity checks, resistance measurements, and signal integrity testing of electronic components or assemblies placed within the chamber. The fixture mechanically clamps or mounts test probes (e.g., pogo pins, spring-loaded contacts) at predefined locations. It provides a stable, repeatable interface between the probes and the device under test (DUT), often allowing for adjustments in probe spacing, angle, or pressure to accommodate different test requirements and DUT geometries. Constructed from aluminum alloy and stainless steel (SUS304 per ASTM A276), the fixture offers a balance of rigidity and corrosion resistance. Key parameters include probe hole diameters from 0.5 to 2.0 mm, accommodating standard probe tip sizes; 16 to 64 probe positions, customizable per test requirements; positioning accuracy of ±0.05 mm for repeatable measurements; contact resistance of ≤50 mΩ for accurate readings; insulation resistance of ≥1000 MΩ at 500 V DC; dielectric withstand voltage of 1000 V AC for 1 minute; operating temperature range of -40 to 85 °C; relative humidity of 5 to 95% non-condensing; ingress protection ratings of IP54 to IP65 per IEC 60529; weight from 2.5 to 5.0 kg depending on configuration; and a standard footprint of 200×150×100 mm, with custom sizes available. These values are reference ranges and must be verified for the specific model and application. The fixture is intended for use in controlled testing environments, and its performance depends on proper installation and maintenance. Always confirm model-specific specifications and compliance with the legal manufacturer or supplier.

The fixture mechanically clamps or mounts test probes at predefined locations, providing a stable and repeatable interface between the probes and the device under test (DUT). It allows adjustments in probe spacing, angle, or pressure to accommodate different test requirements and DUT geometries. The fixture ensures consistent contact pressure and positioning accuracy, which are critical for reliable electrical measurements. Its design includes precision-machined holes and alignment features to maintain probe positions within ±0.05 mm. The materials used (aluminum alloy and stainless steel) provide structural integrity and resistance to environmental factors. The fixture operates within specified temperature and humidity ranges, and its ingress protection rating ensures suitability for dusty or humid environments. Proper installation and periodic verification of probe alignment and contact resistance are necessary to maintain measurement accuracy.