In the electronic manufacturing industry, ICT testing needles are key to ensuring product quality and performance. As the core component of ICT testing fixtures, the performance of test needles directly affects the accuracy and efficiency of test results. Therefore, choosing high-performance ICT testing needles is crucial. The following is a detailed introduction on how to choose high-performance ICT test needles, aimed at providing readers with comprehensive and in-depth guidance.

ICT testing needle, also known as online testing needle, spring needle or spring needle, mainly consists of three parts: needle tip, spring and needle tube. The spring provides the necessary contact force to ensure stable contact between the test needle and the test point; The needle tube serves as a supporting structure to protect the internal spring and transmit signals; The needle directly contacts the test point to complete the testing task.

‌texture of materialThe material of the test needle directly affects its conductivity, wear resistance, and service life. High quality test needles are usually made of wear-resistant materials such as imported stainless steel or phosphor bronze. These materials not only have good conductivity, but also can withstand high-frequency use and friction, maintaining long-term stable testing accuracy.

Coating layerThe selection of coating is crucial for the wear resistance and corrosion resistance of the test needle. High quality coatings can significantly improve the service life of test needles and reduce testing errors caused by wear or corrosion. Common coating materials include gold, nickel, etc.

‌SpringThe spring is a key component that provides contact force for the test needle. High quality springs should have good elastic recovery and stability to ensure stable contact force even after long-term use.

elastic forceThe selection of elasticity should be based on the actual situation of the test point. Insufficient elasticity may lead to poor contact, while excessive elasticity may damage the test point. Therefore, when selecting a test needle, it is necessary to adjust the elastic range of the spring according to the testing requirements.

‌diameterThe diameter of the test needle should be selected based on the spacing and size of the test points. The closer the test points on the PCB board are, the thinner the outer diameter of the selected test pins should be to ensure testing accuracy and avoid short circuits.

accuracyThe diameter accuracy of the casing has a significant impact on the overall accuracy of the testing fixture. High precision tubing can ensure that the test needle maintains a stable trajectory and contact position during movement, thereby improving the accuracy of test results.

Semiconductor testing needle：Mainly used for extremely low contact resistance and ultra-high bandwidth in various communication power electronic components, semiconductor wafer testing, chip packaging testing, etc., it can meet the requirements of 5-40G high-frequency signal testing. At present, centalic can process the minimum probe diameter: needle diameter: 0.06mm/needle tube diameter: 0.10mm.

ICT testing needle：Mainly used for online circuit testing and functional testing, detecting the electrical performance of online components on the board and the connection status of the circuit network. It can quantitatively measure and perform functional testing on the components. Usually, ICT online testing needles are used together with their matching size needle sleeves, which are fixed on the PCB board for easy replacement of probes at any time.

PCB spring pin：Mainly used for testing PCB boards, to determine defects such as circuit conductivity by comparing the resistance or capacitance between circuits. Usually, PCB spring pins are used in conjunction with pin sleeves, which can be divided into tail with wire and without wire.

High current needle：Mainly used in the field of high temperature and high current online testing, such as the testing of photovoltaic new energy cells, it has the characteristics of high testing current and high testing conditions at high temperatures.

centalic mainly produces various types of testing probes (including semiconductor high-frequency probes, ICT testing probes, high current probes, wire harness probes, spring probes, Kelvin probes, RF probes, charging probes, PCB spring probes, non-magnetic probes, etc.) and precision hardware accessories. We have a professional R&D, production, and sales team, as well as a complete production line. Fully and efficiently cooperate with customers to develop probes for testing projects, meet customers' mass production and constantly developing market demands, and provide high-quality products for domestic and foreign customers.