High-speed interface ultra-fine coaxial solution in USB4 and Thunderbolt 5

With the ever-increasing demand for high-speed data transmission, USB4 and Thunderbolt 5 have become the core representatives of the next-generation high-performance interfaces, widely used in docks, external graphics cards, high-definition monitors, and high-speed storage devices. Under 40Gbps and even higher bandwidth conditions, signal integrity has become a key challenge in system design, and micro coaxial cable (extremely thin coaxial cable) is exactly the important foundation that supports the stable operation of these high-speed interfaces.

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High-speed signal transmission's core requirements for harnesses

USB4 and Thunderbolt 5 operate at extremely high frequencies, where ordinary cables tend to experience signal attenuation, crosstalk, and reflection issues, thereby affecting data stability. The extremely thin coaxial cable bundle employs a precise coaxial structure, with each high-speed signal having an independent shielding layer, which can effectively suppress electromagnetic interference and maintain impedance consistency. This ensures stable transmission of high-speed data under long-term and high-load conditions, and is an indispensable key factor in high-speed interface design.

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Section 2: Advantages of Miniaturization and Flexible Wiring

Modern electronic devices are continuously developing towards thinness and high integration, with limited internal wiring space. The diameter of ultra-fine coaxial cables can be as low as 0.2mm, occupying less space and having excellent bending performance. They can realize complex wiring in narrow structures, which is very suitable for the high-speed interface wiring needs of ultra-thin laptops, tablets, and portable devices. This flexible advantage provides higher design freedom for the application of high-speed interfaces in compact products.

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Consider both power supply capacity and long-term reliability

In the practical applications of USB4 and Thunderbolt 5, cables not only bear the responsibility of high-speed data transmission but also need to support a certain power supply. Extremely thin coaxial cable bundles usually adopt a design structure where signal lines and power lines are parallel, ensuring stable high-speed signals while also addressing power transmission requirements. At the same time, its outer shielding structure helps to reduce heat and interference, providing a guarantee for the long-term stable operation of the interface under high-power, high-bandwidth conditions.

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The high-speed performance of USB4 and Thunderbolt 5 puts unprecedented requirements on cables. The extremely thin coaxial cable bundle, with its excellent high-speed transmission capabilities, miniaturized flexible design, and good support for power supply and reliability, has become an indispensable basic component in the era of high-speed interfaces. As high-speed peripherals, VR/AR, and AI expansion devices continue to become more widespread, the value of the extremely thin coaxial cable in the future interface system will also continue to be magnified.

I am[Suzhou Huichengyuan Electronic Technology]Long-term focus on the design and customization of high-speed cable harnesses and ultra-fine coaxial cable harnesses, providing customers with stable and reliable high-speed interconnection solutions. For more information or customized solutions, please feel free to contactManager Zhang: 18913228573 (same as WeChat)。