I-PEX 83038-100B-01-D CABLINE®-UA II 44AWG/50Ω series ultra-thin coaxial cable bundle alternative

Extremely thin coaxial cables and traditional FPCs have different application orientations.

In notebook computers, tablets, display modules, camera modules, and other thin and light electronic devices, FPC has long been an important internal signal connection solution. However, with the continuous compression of internal space in devices and increasingly higher requirements for high-speed signals, EMI control, and wire routing through pivot points, engineers may also consider using extremely thin coaxial cable bundles in some projects. It should be noted that extremely thin coaxial cables cannot be directly replaced by FPC in all scenarios; there are differences between them in terms of structural form, impedance control, bending methods, wiring technology, and connector schemes. For applications requiring multi-channel high-speed signals, independent shielding, narrow space wiring, or routing through pivot points, extremely thin coaxial cable bundles have strong adaptability. I-PEX's CABLINE®-UA II is a series of extremely thin coaxial cable connectors designed for miniaturization, high-density, and high-speed signal connections, featuring a 0.3mm Contact Pitch and Vertical Right Angle structure, 40 pins with a height of 1.27±0.1mm. The official has also showcased an application case where a 26-pin cable bundle with a 0.29mm outer diameter coaxial cable is routed through a Φ2.65mm pivot point or tube.

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Why some space-limited scenes can consider using ultra-fine coaxial cables instead of FPC

From the perspective of engineering design, whether to adopt ultra-fine coaxial cables is not simply a comparison between "FPC or wire material," but rather a comprehensive consideration of the actual product's requirements for space, signal integrity, mechanical movement, and EMI. FPCs have characteristics such as strong integrity, high line density, and suitability for flat layout; while ultra-fine coaxial cables can achieve independent signal channels through a single coaxial structure and combine with connectors for high-density termination. In cases where the cables need to pass through rotating axes, bending areas, narrow channels, or internal three-dimensional routing within devices, ultra-fine coaxial cables can provide a wiring method different from traditional FPCs. CABLINE®-UA II supports 26, 32, 40, and 50 pins, and is compatible with AWG42, AWG44, and AWG46 Micro-Coax. It also employs a multi-point grounding design, which is conducive to EMI control in high-speed signal applications; its reference transmission speed is 5Gbps/lane NRZ, and it lists reference applications such as USB 3.1 Gen1, V-By-One HS 1.4, HDMI 1.3, eDP, and MIPI.

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I-PEX 83038-100B-01-D product structure and engineering selection key points

The I-PEX 83038-100B-01-D introduced this time belongs to the CABLINE®-UA II 40Pin ultra-thin coaxial cable assembly. According to the official model data, this model is 40Pin, Micro-Coaxial 44AWG, L=200mm, and 1-1 structure. The connector model used at the wire end of the cable assembly is 20497-040T-30, and the wire position is defined as 1-1, which means that when carrying out replacement development, engineers need to not only confirm the connector series and pin number, but also pay special attention to the corresponding relationship of wire positions, cable length, wire specifications, termination direction, and the actual assembly space inside the equipment. For purchasers, 83038-100B-01-D can be used as a clear original model reference, and when looking for compatible alternative supply solutions, they should avoid simple procurement based on "40Pin, 200mm" and further confirm key parameters such as connector model, Micro-Coax specifications, impedance, termination structure, and wire position definition. The I-PEX official page also clearly lists 83038 as an evaluation cable model with 40Pin, 44AWG, 200mm, and 1-1.

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Selection, compatibility, and alternative solutions reference and suggestions

For projects that require adjusting the traditional FPC connection method to ultra-thin coaxial cable bundles, or seeking alternative solutions for I-PEX original cable assemblies, engineers are advised to first confirm from five dimensions: "connector + wire material + length + wire position + application performance". Taking 83038-100B-01-D as a reference, focus on checking the CABLINE®-UA II 40Pin interface, 20497-040T-30 cable end connector, 1-1 wire position definition, and 200mm length. At the same time, confirm AWG, impedance, and SI performance according to actual high-speed signal requirements, and do not solely judge whether it can be directly replaced based on appearance dimensions. For devices that have already adopted the I-PEX CABLINE®-UA II architecture, if the original cable assembly has issues with lead time, procurement cost, supply channels, or the need for domestic substitution, structural and electrical parameter matching can be carried out according to the original cable assembly drawings and samples. Our company can provide: I-PEX 83038-100B-01-D compatible alternative cable assembly solutions. According to the actual project requirements of customers, we can carry out corresponding ultra-thin coaxial cable assembly manufacturing and alternative development for 40Pin, 200mm, 1-1 structure, and 20497-040T-30 connector end, providing engineers with sample verification and mass production selection reference.

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Extremely thin coaxial cables are not a simple substitute for FPC, but rather provide another connection solution for specific scenarios.
There is no fixed answer for whether ultra-fine coaxial cables can replace traditional FPCs for all products. For scenarios involving flat large-area wiring, high integration of lines, and fixed structures, FPCs still have their own advantages. However, for products that require high-speed signal transmission, independent shielding, three-dimensional wiring, wire routing through hinges, and extremely small installation spaces, ultra-fine coaxial cable bundles can become a worthy alternative connection solution. The I-PEX 83038-100B-01-D model adopts the CABLINE®-UA II 40Pin scheme, featuring 44AWG Micro-Coax, a 200mm length, and a 1-1 line position structure. The cable end is matched with the 20497-040T-30 connector. I am[3W Electronic Components Network]Focusing on the research and development of high-speed ultra-fine coaxial cable assemblies and connectors, and alternative solutions. If you have selection or verification requirements, or product needs, please contact:Manager Zhang 18913228573 (same number as WeChat)For engineers and procurement personnel involved in the FPC replacement evaluation, domestic substitution of I-PE X-ray beams, or development of second suppliers, these parameters can serve as an important basis for initial selection and compatibility verification.