Categorization：Harness Component
Within the internal connections of high-speed electronic devices, micro-coaxial cables are not of a single specification but rather form different product types based on wire diameter, characteristic impedance, transmission performance, and equipment structural requirements. From an engineering application perspective, common micro-coaxial cables can be mainly distinguished by AWG wire diameter and impedance schemes, such as AWG36, AWG38, AWG40, AWG42, AWG44, and so on. The finer the wire diameter, the smaller the space occupied, but the higher the requirements for processing accuracy, termination technology, and signal integrity control. Taking I-PEX CABLINE®-VS as an example, it supports AWG36 to AWG44 micro-coaxial cables, and can also be compatible with AWG40 twinaxial as well as AWG32/34/36 discrete wire. However, twinaxial and discrete wire belong to different cable categories and cannot be simply referred to as micro-coaxial cables.
A typical ultra-thin coaxial cable usually consists of a central conductor, an insulating layer, a shielding layer, and an external insulating sheath. The central conductor is responsible for high-speed electrical signal transmission, the insulating layer is used to maintain a stable electrical spacing between conductors, the outer shielding structure is responsible for suppressing external electromagnetic interference and reducing signal crosstalk, and the outermost sheath provides insulation and mechanical protection. Its working principle can be simply understood as: high-speed signals are transmitted along the central conductor, the shielding layer establishes a relatively stable electromagnetic environment for the signal, which better controls the impedance, attenuation, crosstalk, and EMI during the transmission process. Therefore, compared with ordinary discrete wires, ultra-thin coaxial cables are more suitable for signal connections in high-speed, high-density, and strong interference environments. The high-speed test reference conditions provided by the official I-PEX CABLINE®-VS documentation are a 40-pin connector with AWG40, 45Ω, and 100mm Micro-Coaxial Cable, which can achieve a transmission reference performance of 32Gbps/Lane NRZ.
This product corresponds to the model I-PEX 82692-100B-01-D, which is a very thin coaxial cable assembly of CABLINE®-VS 40Pin, 1-1 straight-through structure. According to the corresponding PDF documents, this cable assembly uses AWG #40, 50Ω, blue Micro-Coaxial Cable, with a total length of 300±5mm. Both ends are equipped with the same 40Pin termination structure and connected in a 1-1 manner; the connector model used at the cable assembly end is 20454-240T, featuring a 40PIN, 0.5MM Pitch scheme. It is also matched with the 2574-0402 metal shell and 2576-140-00 Pull Bar structural components. For engineers, the key to this solution is not just that "40Pin can be connected," but also to confirm that the Pin definition, wire diameter, impedance, length, termination process, and connector structure are consistent with the original design; for purchasers, it is necessary to further confirm whether the alternative cable assembly can be delivered in bulk in accordance with the original assembly dimensions and interface requirements.
If the project requires domestic substitution or the introduction of a second supplier for the I-PEX CABLINE®-VS series cables, it is recommended not to judge solely based on "the same connector model." Instead, a comprehensive confirmation should be made based on Pin number + Pitch + wire diameter + impedance + cable length + Pin definition + termination structure. For the model I-PEX 82692-100B-01-D, the focus of the alternative solution should be on matching 40Pin, 0.5mm pitch, AWG40, 50Ω, 300±5mm, and 1-1 straight-through relationship, and the emphasis should be placed on verifying high-speed signal integrity, termination reliability, and assembly dimensions. The official current page of I-PEX also lists the 82692-100B-01-D as a CABLINE®-VS 40Pin, 40AWG, 300mm, 1-1 evaluation cable model. Based on these parameters, our company can provide: I-PEX 82692-100B-01-D compatible alternative cable solution, which can produce and manufacture extremely thin coaxial cables according to the actual length, Pin definition, wire specifications, and connector configuration of the customer's equipment, providing corresponding cable matching solutions for engineering verification, sample making, and bulk procurement.
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