Categorization：Harness Component
In laptops, tablets, display modules, camera equipment, and other space-limited electronic products, internal connections must meet both high-speed signal transmission and the minimization of space occupied by the cable束. Therefore, extremely thin coaxial cables are gradually becoming an important solution for high-density signal connections. Taking the I-PEX CABLINE®-UA II series as an example, its connectors feature a 0.3mm Contact Pitch and a Vertical Right Angle structure, supporting 26Pin, 32Pin, 40Pin, and 50Pin, and can match AWG42, AWG44, AWG46 Micro-Coaxial Cable; the I-PEX official materials also provide the maximum outer diameter of Micro-Coax as 0.3mm. To engineers, "extremely thin" does not only mean a small cable outer diameter but also requires completing the structural design of the center conductor, insulation layer, shielding layer, and other elements within a limited cross-sectional space, while also considering requirements such as impedance, signal integrity, and mechanical reliability. Therefore, when selecting in practice, it cannot be simply assumed that the thinner the wire, the better, but should be determined comprehensively based on transmission speed, length, space, bending, and electrical requirements.
When discussing "how small the core wire diameter of an ultra-fine coaxial cable can be," it is first necessary to distinguish the core wire conductor diameter from the outer diameter of the entire coaxial cable. AWG is a way to express conductor specifications and does not equal the outer diameter of finished ultra-fine coaxial cables. Taking CABLINE®-UA II as an example, the Micro-Coax specification compatible with I-PEX has already reached AWG46, with a maximum cable outer diameter of 0.3mm; this indicates that ultra-fine coaxial cables can complete high-speed signal transmission structures within a very limited space. From the common AWG theoretical sizes, the theoretical diameter of a solid round conductor for AWG46 is approximately 0.13mm, and for AWG44 is about 0.16mm; however, actual Micro-Coax may use braiding, coating, and different conductor structures, so engineering cannot directly use AWG conversion values to replace actual core wire dimensions. The final standard should be the specific cable specification sheet and measured data. For purchasers, if the supplier only provides "AWG44 ultra-fine coaxial cable," they should further confirm parameters such as conductor structure, insulation outer diameter, shielding structure, finished outer diameter, and impedance to determine whether it truly meets the original design requirements.
The corresponding product model is I-PEX 82897-100B-02-D, which belongs to the CABLINE®-UA II 40Pin ultra-thin coaxial cable assembly, with a standard length of 100mm and a 1-N structure, using the Micro-Coaxial Cable solution. The wire material connector model that matches this cable assembly is 20497-040T-30, with a connector of 40PIN, corresponding to the 0.3mm Contact Pitch of CABLINE®-UA II. According to the I-PEX official connector data, 20497-040T-30 belongs to the Plug Housing Assembly, and the relevant dimensions of the 40Pin version have A size of 17.0mm; the overall product data of CABLINE®-UA II indicates that the width of the 40Pin version of the connector is calculated as 5.0+0.3×Pin number, which is approximately 17.0mm. For engineers, when developing such alternative cable assemblies, they cannot only check the "40PIN" item but also need to verify the connector model, 0.3mm spacing, wire material AWG specification, impedance, cable assembly length, Pin definition, and both-end termination structure; for purchasers, these parameters are an important basis for judging whether products from different suppliers can truly replace the original cable assembly. Our company can provide: I-PEX 82897-100B-02-D compatible alternative cable assembly solutions, which can match and manufacture ultra-thin coaxial cable assemblies according to the samples, drawings, or technical parameters provided by customers.
For projects that need to replace I-PEX 82897-100B-02-D, engineers and procurement personnel are recommended to confirm in the order of "connector - Pin number - spacing - cable - impedance - length - termination definition". CABLINE®-UA II officially supports 26P, 32P, 40P, and 50P, and supports AWG42, AWG44, AWG46 Micro-Coaxial Cable; since the target product is 40PIN, the first thing to confirm should be whether it is a 40PIN structure corresponding to 20497-040T-30 with a 0.3mm pitch, and then confirm the actual specifications of the extremely thin coaxial cable used and its electrical parameters. If the project is particularly space-sensitive, special attention should also be paid to the cable outer diameter and bending space; in the reference cases provided by I-PEX official materials, the UA II 26Pin cable with an outer diameter of 0.29mm can pass through aΦ2.65mm diameter pivot or hose, reflecting the design philosophy of this series for small space and wire-through-pivot applications. Therefore, the alternative solution cannot only pursue "model similarity" or "size proximity", but should be based on actual connector matching, Pin definition, cable specification, and electrical performance verification. For engineering prototypes, domestic substitutes, bulk purchases, or original supply chain switching, sample confirmation and compatibility verification can be carried out according to the actual project requirements.
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