I-PEX 83031-100B-01-D CABLINE®-UA II 44AWG/50Ω series ultra-thin coaxial cable replacement

Why does the cable length affect the high-speed signal quality?

For high-speed electronic devices, it's not as simple as "the shorter, the better" for extremely thin coaxial cables, but the cable length does indeed directly affect the quality of signal transmission. As the transmission distance increases, conductor resistance, dielectric loss, and high-frequency loss accumulate gradually, and issues such as impedance discontinuity, echo loss, and crosstalk are also more likely to appear. When the signal rate reaches the Gbps level, even the addition of a seemingly short section of cable may increase insertion loss and degrade signal edges, thereby affecting the signal margin at the receiving end. Therefore, when designing high-speed displays, camera modules, internal connections in laptops, or other space-limited devices, it is necessary to consider both "whether the cable is long enough" and "whether the high-speed signal can be transmitted stably." The I-PEX CABLINE®-UA II itself is a super miniature coaxial connector with a 0.3mm pitch, and the official reference transmission capability is 5Gbps/lane NRZ, along with listed reference applications such as USB 3.1 Gen1, V-By-One HS 1.4, HDMI 1.3, eDP, and MIPI.

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For example, in 83031-100B-01-D, how should the 100mm length be understood?

This I-PEX 83031-100B-01-D introduced this time belongs to the CABLINE®-UA II 26Pin ultra-thin coaxial cable assembly, according to the official model data, its specifications are 26Pin, Micro-Coaxial, 44AWG, L=100mm, 1-1 structure. The connector model used at the cable end is 20497-026T-30, corresponding to the CABLINE®-UA II 26Pin Plug Housing, and the spacing of the connector terminals is 0.3mm. To engineers, 100mm is not just a simple "length parameter", but part of signal integrity design: if the actual internal requirement of the device is only 80~100mm, using a reasonable length can reduce unnecessary transmission paths; if it needs to be increased to 200mm, 300mm due to structural layout, then it should be evaluated in sync with insertion loss, return loss, crosstalk, and the overall SI margin at the whole machine end. The official I-PEX same series also provides 26P 1-1 cable assembly models of 200mm and 300mm, 83032 and 83033, which can be used as references for different length requirements.

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Extremely thin coaxial cables are not only about "length," the material structure is also crucial.

For engineers, determining whether a very thin coaxial cable can meet high-speed transmission requirements requires comprehensive consideration of length, AWG, conductor structure, insulation layer, shielding structure, impedance consistency, and connector termination quality. The CABLINE®-UA II officially supports AWG42, AWG44, and AWG46 Micro-Coax, with the official sample cable assembly including the 44AWG specification; at the same time, the connector's 0.3mm pitch, 1.27±0.1mm mating height, and 2.9mm depth also determine the cable assembly's spatial adaptability in small devices. For the 83031-100B-01-D model, the combination of 44AWG ultra-thin coaxial cable and 26PIN, 0.3MM connectors, while meeting the requirements of miniaturized wiring, also needs to reduce additional losses through reasonable line length control, termination technology, and signal integrity control. Particularly in areas such as the shaft, camera module, or other areas that are bent repeatedly, unnecessary increase in line length should be avoided in order to "leave room for maneuver."

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Selection, compatibility, and alternative solutions reference and suggestions

If the company is engaged in the replacement parts, domestic substitution, or secondary development of I-PEX 83031-100B-01-D, it is recommended that engineering and procurement personnel not simply replace the parts according to the "26Pin cable assembly" but instead focus on checking key conditions such as the CABLINE®-UA II series, 26PIN, 0.3MM pitch, 44AWG Micro-Coax, 100mm length, 1-1 structure, and connector model 20497-026T-30. At the same time, confirm the outlet direction, termination form, and cable assembly shape based on the actual device's wiring space. I-PEX also lists 83031-100B-01-D as an evaluation cable assembly model for CABLINE-UA II 26Pin, 44AWG, 100mm, and 1-1. For procurement personnel, if there is a demand for delivery time, cost, or supply channel for the original factory cable assembly, compatible and alternative development can be carried out according to the interface, Pin count, Pitch, wire specifications, and length of the original model, rather than simply replacing it with a standard cable. Our company can provide: I-PEX 83031-100B-01-D compatible alternative cable assembly solutions, which can be customized and developed with ultra-thin coaxial cable assembly based on the actual length, wire diameter, connector, and termination structure requirements of the customer.

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Reasonable control of cable length is an important link in the design of high-speed ultra-fine coaxial cable assemblies.
The effect of the length of extremely thin coaxial cable bundles on signal quality is objectively present: an increase in length means that the high-frequency transmission path becomes longer, and the loss and difficulty of signal integrity design will also increase accordingly. Therefore, during engineering design, it is necessary to adopt a reasonable cable length as much as possible on the basis of meeting the mechanical wiring requirements, and to conduct comprehensive verification in combination with cable specifications, connectors, termination processes, and actual high-speed signal indicators. For I-PEX 83031-100B-01-D such 26PIN, 0.3MM Pitch, 44AWG, 100mm CABLINE®-UA II extremely thin coaxial cable bundles, it is necessary to meet the requirements of the space layout of miniaturized equipment, while also paying attention to the loss and stability during the high-speed signal transmission process. I am【3W Electronic Components Network】Our company has a complete production system and technical team for ultra-fine coaxial cable assemblies, capable of meeting customized and replacement needs for various coaxial cable assemblies; welcome to contact:Manager Zhang 18913228573 (WeChat same number)For projects requiring domestication, second supplier, or compatible alternatives, targeted ultra-fine coaxial cable束 design and sample verification around the original model can be carried out, thus balancing performance, delivery time, and procurement cost.