Categorization：Harness Component
I-PEX 82665-100B-01-D is a 40PIN ultra-thin coaxial cable assembly product from the CABLINE®-CA series, suitable for internal connections in electronic devices that require high-speed signal transmission, miniaturized layouts, and high connection reliability. According to the corresponding product documentation, this cable assembly uses a 40PIN, 0.4MM pitch cable end connector configuration, with the cable end connector model being 20634-140T-02. It adopts the Micro-Coaxial ultra-thin coaxial solution, with the product cable assembly length being 100mm, and the Pin Assignment being 1-1, meaning that the corresponding Pin terminals are connected at both ends. I-PEX official CABLINE®-CA documentation states that this series uses a 0.4mm Contact Pitch and horizontal insert structure, and provides different specifications from 10PIN to 60PIN, among which the 40PIN corresponds to the Plug Housing model 20634-140T-02. For engineers, the key point of this product is not only the "40PIN", but also the matching of the connector, cable, termination process, impedance, and overall signal integrity; for purchasing personnel, it is necessary to focus on verifying the material number/model of the ultra-thin coaxial cable assembly, connector model, PIN number, pitch, cable length, and electrical performance requirements to avoid purchasing products with similar specifications but unable to be directly replaced in actual use.
This is a question that engineers often confuse when selecting products: the "rated voltage" and "voltage withstand" of extremely fine coaxial cable bundles are not the same concept. For the I-PEX 82665-100B-01-D product datasheet in question, the cable specifications are marked with a rated voltage of 30V, and the voltage withstand test requirements are AC 250V, with a maximum leakage current of 2.0mA, and a minimum insulation resistance of 50MΩ, with the insulation resistance test conditions being DC 100V. This means that it cannot be simply understood that this extremely fine coaxial cable bundle can withstand a 250V working voltage for a long time; AC 250V belongs to the voltage withstand test indicators under specified conditions, used to verify whether the cable insulation system breaks down or exhibits abnormal behavior under short-term high-voltage testing conditions, while 30V is the rated voltage reference in the product datasheet. For procurement and engineering applications, if the actual working voltage of the equipment is close to or exceeds 30V, it is necessary to further confirm whether the whole cable assembly, connectors, insulation materials, and actual working environment meet the requirements, rather than relying solely on the "250V voltage withstand" for selection. The datasheet for the CABLINE®-CA connector series also provides electrical performance parameters such as rated voltage, insulation resistance, and voltage withstand, so when doing domestic alternatives, it should be more in accordance with the actual product drawings and testing requirements for item-by-item verification.
From the perspective of engineering design, the ultra-fine coaxial cable assembly mainly undertakes the task of high-speed signal transmission, and its design focus is usually not on bearing high voltage, but on balancing miniaturization, impedance control, signal integrity, EMI suppression, and reliable connection. Therefore, "how much voltage it can withstand" cannot be judged independently of the specific product structure. For the I-PEX 82665-100B-01-D, its corresponding cable end connector is 20634-140T-02, with a 40PIN spacing of 0.4MM, and is matched with Micro-Coaxial ultra-fine coaxial cables; the AC 250V voltage withstand specification in the product documentation is mainly for insulation withstand verification, rather than indicating that 250V can be applied during normal use. In actual projects, engineers need to make a comprehensive judgment by combining the power and signal whether they are on the same line, the potential difference between adjacent pins, insulation distance, equipment operating temperature, cable bending status, and long-term reliability requirements. Especially in AI devices, high-speed displays, industrial cameras, machine vision, laptops, and other high-density electronic devices, ultra-fine coaxial cable assemblies usually pay more attention to the quality of high-speed signal transmission rather than simply pursuing high voltage bearing capacity. I-PEX official data shows that CABLINE®-CA is positioned for high-speed data transmission, supporting up to 32 Gbps/Lane, and uses a 0.4mm spacing and horizontal insertion structure.
For engineers and procurement personnel who need to replace domestic products, it is recommended not to purchase only according to "CABLINE-CA 40PIN", but to conduct a complete check with product material number/model + connector model + PIN number and spacing + wire specification + wire length + Pin Assignment + electrical performance. The target product is I-PEX 82665-100B-01-D, and the connector model used at the wire end is 20634-140T-02, with a 40PIN, 0.4MM spacing. The key electrical specifications in the corresponding product information include a rated voltage of 30V and AC 250V voltage withstand test requirements. Therefore, the domestic alternative harness cannot only achieve "plug-in", but also needs to be verified for terminal position, wire sequence, wire length, impedance, insulation performance, voltage resistance, conduction, and high-speed signal performance. In the official I-PEX model information, the CABLINE-CA 40PIN 1-1 evaluation harness includes length specifications such as 100mm, 200mm, and 300mm, among which 82665-100B-01-D is the 100mm version and can be an important model identification basis for engineering selection. Our company can provide: I-PEX 82665-100B-01-D compatible alternative harness solution, which can match ultra-fine coaxial harness schemes according to customer equipment structure, wire length, wire sequence, connector configuration, and electrical performance requirements, and provide domestic alternative support for engineering verification, sample development, and bulk procurement.
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