Categorization：Harness Component
With the continuous development of laptops, tablets, display devices, VR/AR devices, and other high-speed electronic products towards thinness and miniaturization, the internal connection space of the devices is becoming increasingly limited. At the same time, high-speed signal transmission puts higher requirements on the impedance control, shielding performance, and connection reliability of the cables. The product introduced in this article is I-PEX 81461-100B-02-D, which belongs to the CABLINE®-CA II series 30PIN Micro-Coaxial ultra-thin coaxial cable. It uses AWG #40, 50Ω ultra-thin coaxial wire, with a standard length of about 200mm, and the connector uses a high-density 0.4mm Pitch structure. The connector model matched with this cable is 20680-030T-01, with a connector specification of 30PIN and 0.4MM pitch. For engineers, this kind of structure can achieve multi-channel signal connections in limited PCB and internal device spaces; for purchasers, specifying key parameters such as product material number/model, connector model, PIN number, and pitch is conducive to specification confirmation, supplier comparison, and evaluation of domestic substitution solutions.
Engineers often pay attention to a question when selecting ultra-fine coaxial cable assemblies: What is the maximum current that ultra-fine coaxial cables can withstand? In fact, there is no unified maximum current value for the allowable current of ultra-fine coaxial cables that is independent of specific wire diameter, structure, and usage conditions. For the CABLINE®-CA II platform, the official materials from I-PEX provide corresponding rated current capabilities based on different cable specifications; the current capability of Micro-Coaxial Cable varies with the AWG specification. For the I-PEX 81461-100B-02-D covered in this article, it uses AWG #40 Micro-Coaxial Cable, so in actual engineering selection, the rated current data for the corresponding AWG #40 cable material and specific cable assembly structure should be used as a basis, and it cannot be simply applied to other AWG specifications. It should be particularly noted that the rated current is not the same concept as the instantaneous current that can be withstand, or the withstand voltage test value; the actual allowable current is also affected by factors such as conductor temperature rise, environmental temperature, cable assembly arrangement density, heat dissipation conditions, continuous working time, and the rated capacity of the connector terminal. Therefore, if the customer needs to use this cable assembly for power or mixed signal applications, it is recommended to verify the specific load current and temperature rise requirements during the formal design phase, rather than simply judging the maximum current based on the AWG #40 parameter alone.
For I-PEX 81461-100B-02-D, the wire and connector must be considered as a complete high-speed interconnect system. The connector model used at the wire end is 20680-030T-01, featuring high-density connection with 30PIN and 0.4MM pitch, and is paired with the CABLINE®-CA II series' shielding and mechanical locking structure, which is suitable for internal connections within high-speed electronic devices with limited space. This Harness uses 30-channel AWG #40, 50Ω Micro-Coaxial Cable, where the cable itself achieves signal transmission and shielding through the coaxial structure; the connector is responsible for the reliable connection between the cable and the device PCB. Therefore, for engineers, when evaluating such extremely fine coaxial cables, in addition to focusing on the current carrying capacity, they should also pay attention to characteristic impedance, signal integrity, insertion loss, return loss, crosstalk, EMI, and the mechanical reliability of the connector; for purchasers, it is recommended to clearly specify key specifications such as I-PEX 81461-100B-02-D, 20680-030T-01, 30PIN, 0.4MM, AWG #40, 50Ω, 200mm in inquiries and technical agreements, to avoid vague procurement based solely on "30Pin extremely fine coaxial cable".
If a company needs to look for a compatible or domestic alternative for the extremely thin coaxial cable assembly I-PEX 81461-100B-02-D, it is recommended to first confirm the compatibility of the connector interface, including 20680-030T-01, 30PIN, 0.4MM Pitch, and related lock, shielding, and mating dimensions; secondly, confirm that the cable material uses the matching AWG #40, 50Ω Micro-Coaxial Cable, and perform temperature rise verification according to the actual working current; at the same time, it is also necessary to check the mechanical parameters such as approximately 200mm cable length, end size, cable exit direction, and fixation method. For high-speed applications, it is not enough to just verify "whether it can be plugged in", but further verification of impedance consistency, insertion loss, return loss, crosstalk, and EMI performance is also required. Our company can provide: I-PEX 81461-100B-02-D compatible alternative cable assembly solutions, which can produce and manufacture extremely thin coaxial cable assemblies around the actual equipment structure, connector interface, cable specifications, length, and electrical performance requirements of the customer, provide compatible verification samples for engineers, and at the same time, provide domestic alternatives, second supplier, and supply chain optimization solutions for purchasing personnel.
“Without the consent or authorization of this site, no one shall reproduce, reprint, distribute, cite, change, broadcast or publish the content in whole or in part in any form, nor shall there be any other violation of the copyright of this site.
