The technological trend of USB4 and Type-C high-speed transmission cables

With the widespread adoption of the USB4 specification, the Type-C interface has become the unified transmission standard for laptops, tablets, smartphones, monitors, and peripheral devices. USB4 supports data transfer rates of up to 40Gbps while integrating DisplayPort video output and up to 100W of PD fast charging, presenting unprecedented challenges for cable design.

First, high-speed transmission imposes extremely strict requirements on impedance control. USB4 cables must maintain stable differential impedance at 90±5 ohms. Any structural deviation can degrade signal integrity, leading to data transmission errors or screen flickering. Second, charging cables exceeding 60W must incorporate an E-Marker chip to declare the cable's current-carrying capacity to devices via the CC channel; otherwise, devices will automatically limit current to ensure safety.

On the manufacturing side, this means cable manufacturers need precision twist-pitch control for coaxial or shielded twisted-pair structures, foamed insulation extrusion technology, and full-process electrical characteristic testing capabilities, including verification of high-frequency parameters such as insertion loss, return loss, and near-end crosstalk.

For brand customers currently sourcing Type-C cables, we recommend focusing on three key points: first, whether the supplier has passed USB-IF certification; second, whether they possess complete HTOL (High Temperature Operating Life) accelerated life testing and mating cycle test reports; and third, whether the factory is equipped with automated testing equipment to ensure mass production consistency.

Established in 1988, Yingchang Enterprise Co., Ltd. has long been dedicated to OEM/ODM manufacturing of computer, communication, and audio-video connecting cables. Our quality system is certified to UL, ISO 9001, and ISO 14001 standards, and we provide customized design and mass production services for high-speed transmission cables according to customer requirements.