Ceramic Sorting Disks

Zirconia Sorting Tray refers to the loading platform inside the automatic test sorter (Handler), which is made of high-performance ceramic material with precision processing. Its core role is to precisely, reliably and stably carry and position the components under test, ensuring excellent electrical contact with the test sockets, thus guaranteeing high precision, high reliability and high efficiency of automated testing.

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In a high-precision, high-reliability test environment such as resistor and chip sorting, ceramic sorting discs are the preferred material (usually high-performance engineering ceramics, such asAlumina, Aluminum nitride, etc.) because of their excellent overall performance:

• High hardness and abrasion resistance: withstands long-term, high-frequency impact and friction of test socket pins (Pogo Pins), resulting in extremely long service life and reduced maintenance and replacement costs.
• Excellent dimensional stability and low coefficient of thermal expansion: Insensitive to temperature changes, maintaining high geometric and positioning accuracy (micron level) during temperature fluctuations in the test environment or when the device itself heats up, which is critical to ensuring reliable and repeatable test contacts.
• High insulation resistance and excellent dielectric properties: Provide excellent electrical insulation to prevent signal crosstalk and ensure the purity and accuracy of test signals, especially in high-frequency, high-sensitivity testing.
• High rigidity and low deformation: not easy to bend and deform under mechanical stress and test pressure, maintaining the platform flatness, to ensure the consistency of contact at all test points.
• Good chemical stability and corrosion resistance: it can resist the influence of moisture and light chemicals in the environment.
• High surface finish: easy to clean, reducing the residual contaminants affecting the test.
• Translated with DeepL.com (free version)

• Sorting trays are the core component of the ATE Handler.
• The core role of the Sorting Tray is to carry small electronic components such as resistors, chips, etc. under test and position them accurately and reliably into the test station (in contact with the Test Socket).
• During the test process, it ensures a stable, low resistance, low inductance electrical contact between the device pins and the test socket.
• After the test is completed, the sorter sorts the devices into different bins or trays according to the test results (good/defective, parameter grading).