I-PEX 83048-100B-01-D CABLINE®-UX II 40AWG/50Ω series ultra-thin coaxial cable replacement

Ultra-thin notebook internal space is getting smaller, and wiring harnesses also have to "slim down"

With the continuous trend of high-end laptops towards thinness, high screen-to-body ratio, and high performance, the space available for cables in areas such as motherboards, display modules, cameras, wireless modules, and screen hinges is increasingly limited. Traditional cables with larger diameters not only occupy internal space but may also affect the structural design and repeated bending in the hinge area. Therefore, in high-density, small-space internal connections, extremely thin coaxial cables are gradually becoming an important choice for engineers. Taking the I-PEX CABLINE®-UX II series as an example, its connectors feature a 0.25mm pitch and vertical/90° outlet structure, with a height of about 1.04mm and a maximum height of only 1.10mm, making it very suitable for high-density wiring inside thin devices. I-PEX official materials also show that a 40Pin cable with coaxial wire processing of about 0.24mm outer diameter can pass through a turntable or small-diameter pipeline with a diameter of about Φ2.66mm, which is also an important reason why extremely thin coaxial cables are suitable for the wiring in the hinge area of laptops.

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Why do high-end laptops prefer extremely thin coaxial cables? The key lies in "small, flexible, high-speed, and anti-interference."

For laptop engineers, choosing extremely thin coaxial cables is not just about saving space; it is more important to balance signal transmission and mechanical reliability within limited space. The extremely thin coaxial structure can integrate signal conductors, insulating layers, and shielding layers under a smaller outer diameter, which is conducive to controlling impedance and reducing external interference during high-speed display signal transmission; at the same time, thinner and softer wire materials are also more adaptable to the wiring requirements of screen opening and closing as well as the hinge area. CABLINE®-UX II adopts a multi-point grounding design, with its shielding path forming a continuous connection from Wire Shield→Ground Bar→Plug Shell→Receptacle Shell→PCB, which is beneficial to improving EMC performance. Official data shows that the series can achieve a reference transmission speed of up to 5Gbps/lane NRZ and is suitable for high-speed applications such as USB 3.1 Gen1, V-By-One HS 1.4, HDMI 1.3, eDP, etc.

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I-PEX 83048-100B-01-D cable harness scheme, focus on 30PIN and 0.25MM pitch

The product model introduced this time is I-PEX 83048-100B-01-D, which belongs to the CABLINE®-UX II 30Pin ultra-thin coaxial cable assembly scheme, corresponding to the 30P, L=300mm, 1-1 cable assembly in the I-PEX official documentation. The cable assembly uses the wire end connector model 20532-030T-02, with a connector specification of 30PIN, 0.25MM Pitch. For engineers to evaluate PCB space, connector layout, and cable assembly alternative design, the 30Pin and 0.25mm pitch are the key structural parameters to check; for purchasing personnel, it is recommended to use the product part number, connector model, Pin number, Pitch, cable length, cable specification, impedance, and termination method as the main basis for quotation and sample confirmation. The I-PEX official documentation indicates that CABLINE®-UX II can provide 30, 34, 40, 50Pin specifications, compatible with Micro-Coaxial Cable including 45Ω AWG44 or smaller specifications, or 50Ω AWG46 or smaller specifications, and the specific alternative items should still be confirmed according to the actual specifications of the original cable assembly.

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Selection and compatibility as well as alternative solutions reference and suggestions

For customers needing to replace I-PEX 83048-100B-01-D, it is not recommended to simply replace it with a "30Pin cable assembly". Instead, it is advisable to check at three levels: connectors, cables, and the overall cable assembly structure. First, confirm that the cable end connector is 20532-030T-02, and that the 30PIN, 0.25MM pitch matches the original equipment; second, confirm the AWG, impedance, outer diameter, shielding structure, and actual length of the extremely thin coaxial cable; finally, confirm that the termination method, wire sequence, cable exit direction, and connection form at both ends are consistent. Especially for laptop display screens, pivot points, and high-speed signal connections, it is not enough to just look at the mechanical dimensions; attention must also be paid to signal integrity, shielding continuity, and bending space. Based on the specifications and characteristics of I-PEX CABLINE®-UX II, our company can provide a compatible and alternative cable assembly solution for I-PEX 83048-100B-01-D, which can be matched and produced according to the original cable assembly, connector model, cable length, Pin number, cable material specifications, and wire sequence requirements provided by the customer, and provide support for alternative extremely thin coaxial cable assembly for engineering development, sample verification, and bulk purchasing.

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From thinning to high-speed, ultra-fine coaxial cable束 has become an important connection solution for high-end equipment.
For high-end laptops, the internal wiring needs to be both "thin enough" and meet the requirements of high-speed signal transmission, EMC control, space layout, and mechanical reliability. Therefore, the value of extremely thin coaxial cables is not simply to reduce the size of the wire material, but to achieve a balance between miniaturization, high-density, high-speed transmission, and stable connection within a limited structural space. The I-PEX CABLINE®-UX II, with its 0.25mm contact spacing, ultra-thin structure, vertical cable exit, and multi-point grounding design, provides a targeted connection solution for such applications. I am【3W Electronic Components Network】Focused on the research and development of high-speed ultra-fine coaxial cable assemblies and connectors, as well as alternative solutions. If you have selection or verification needs, or product requirements, please contact:Manager Zhang 18913228573 (same number for WeChat)For I-PEX 83048-100B-01-D and other similar 30Pin, 0.25MM pitch ultra-fine coaxial cable assemblies, engineers and purchasers should pay close attention to the mating connector model, pin count, pitch, wire specification, length, wire sequence, and shielding structure when selecting alternative options, in order to improve the compatibility and production reliability of the alternative solution.