Categorization：Harness Component
Extremely thin coaxial cable束 is an important cable solution for internal signal connections in high-speed, miniaturized electronic devices, and its basic structure usually consists of center conductor, insulating layer, shielding layer, and external sheath, etc. It controls the signal transmission path through the coaxial structure and reduces the impact of external interference on high-speed signals. For engineers, the core value of extremely thin coaxial cables is not only reflected in the "thinness of the wire diameter" but also in impedance control, signal integrity, space utilization, and multi-channel high-density wiring capabilities; for purchasers, it is necessary to further pay attention to whether parameters such as wire diameter, impedance, length, Pin number, connector model, wire position definition, and end shaping are consistent with the original product. The I-PEX 82911-100B-02-D introduced this time is a CABLINE®-VS series 50Pin extremely thin coaxial cable束, and the drawings show that it uses AWG#40, 50Ω Micro-Coaxial Cable, with a cable length of 300.0±5.0mm, and both ends use the corresponding CABLINE®-VS structure, suitable for internal connections of devices that have requirements for both space and high-speed signal transmission.
From the I-PEX 82911C0 drawing, it is composed of 50 AWG#40, 50Ω ultra-thin coaxial cables and connector components, Shell, Pull Bar, UV glue, and fixing tape, among which the connector model used at the wire end is the 20454-250T series, and the specific model corresponding to the drawing BOM is 20454-250T-01. The配套 structure also includes the 2574-0502 Shell and 2576-150-00 Pull Bar. The CABLINE®-VS connector itself uses a 0.5mm Pitch, horizontal insertion, mechanical locking structure, with an insertion height of about 1.0±0.1mm, and can achieve a high-density signal connection in a limited space. For engineers, this combination of "ultra-thin wire + micro-space connector" is beneficial for compact internal layout of equipment; for purchasing and supply chain personnel, when looking for compatible products, it is not enough to only check "50Pin" and "300mm", but also need to confirm the 20454-250T series connector, AWG#40 wire, 50Ω impedance, and terminal structure synchronously, in order to reduce the risk of assembly mismatch of alternative products.
The outstanding features of extremely fine coaxial cable bundles lie in their high density, miniaturization, and adaptability to high-speed signal transmission. The CABLINE®-VS series is designed for high-speed data connections, with official data indicating that it supports a high-speed transmission performance of up to 32Gbps/Lane, and it can be applied to high-speed interface ecosystems such as DisplayPort, eDP, USB4, Thunderbolt, HDMI, and MIPI, making it suitable for notebook display connections, industrial cameras, machine vision, AI vision equipment, and internal connections of other high-speed computing devices. For industrial vision and AI devices, with the continuous increase in camera resolution and data volume, cables not only need to handle multi-channel high-speed signal transmission but also need to complete high-density wiring within limited device spaces. Therefore, the extremely fine coaxial structure has good application value. The 82911-100B-02-D model uses a 50Pin AWG#40 Micro-Coaxial Cable and is paired with the CABLINE®-VS series connection structure, serving as a reference for internal connection schemes for these high-speed, miniaturized devices. It is noted that specific high-speed performance should still be verified in combination with actual wire impedance, length, device interface, and system design, and cannot be directly equated to the overall transmission capability of the cable assembly based solely on the theoretical specifications of the connector.
For engineers and purchasing personnel, the selection of extremely fine coaxial cable assemblies should be comprehensively confirmed from several dimensions such as "connector-Pin number-wire diameter-characteristic impedance-length-wire position-structure-performance". This product I-PEX 82911-100B-02-D is a 50Pin solution, with the cable end connector being the 20454-250T series, and the wire position definition is according to the project material requirements as 1-N. However, from the detailed drawings of 82911C0, the actual pin assignment on both ends is marked as reverse 1:1 correspondence. Therefore, in the actual development and replacement, the original line sequence of the customer's equipment and the final engineering definition should be confirmed, and the specific pin correspondence cannot be judged solely based on the "1-N" notation. For projects that require domestic substitution, cost reduction, shortened lead time, or increased second suppliers, it is recommended to first conduct sample verification, focusing on confirming connector matching, conduction and insulation performance, voltage resistance, impedance, insertion loss, crosstalk, and high-speed signal integrity before proceeding with mass import. Our company can provide: I-PEX 82911-100B-02-D compatible replacement cable assembly solutions, which can be matched and developed according to the actual requirements of the customer's equipment, including the 20454-250T series connectors, 50Pin extremely fine coaxial cables, wire position definition, and cable assembly length, providing a matching solution for ultra-fine coaxial cable assemblies for engineering verification, domestic substitution, and bulk procurement.
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