I-PEX 82876-100B-02-D 40P high-speed signal transmission extremely thin coaxial cable bundle alternative

82876-100B-02-D is a type of ultra-fine coaxial cable assembly. From an engineering application perspective, understanding this product involves recognizing its characteristics and potential uses.

In laptop computers, tablets, display devices, ultra-thin terminals, and high-speed internal interconnect systems, the connection space is increasingly limited, and there is a growing demand for high-speed signal transmission, EMI control, flexible wiring, and assembly reliability. Therefore, extremely thin coaxial cables have become an important solution for high-speed internal connections. The I-PEX 82876-100B-02-D discussed in this article belongs to the CABLINE-CAL 40P ultra-thin coaxial cable solution. Official information indicates that it is a 1-N cable configuration of a 40Pin, 40AWG miniature coaxial cable, 300 mm in length; the matching CABLINE-CAL connector system uses a 0.4 mm pitch and horizontal insertion structure, the 40Pin combined dimensions are approximately 24.05 mm × 5.50 mm × 0.80 mm Max., the mating height is about 0.73 ±0.07 mm, and it supports AWG 38, 40, 42, 44, etc., miniature coaxial cable specifications. The official information also lists 40 Gbps/lane PAM3 as a reference transmission capability, and provides corresponding high-speed signal integrity test data. To engineers, this type of cable assembly is not just a simple "wire + connector", but requires a complete high-speed interconnect component that takes into account the wire material impedance, attenuation, crosstalk, return loss, shielding, termination technology, bending radius, and mechanical dimensions of the connector; for purchasing personnel, it is necessary to further pay attention to the material number correlation of the original manufacturer, the structural compatibility of substitute materials, AWG specifications, line length tolerance, connector accessories, sample verification, and bulk supply capacity. Therefore, when looking for compatible alternative products for the 82876-100B-02-D, the complete cable assembly specification should be used as the basis for judgment, rather than just looking at whether the connector shape is similar.

The internal structure of ultra-fine coaxial cables is as follows? Why can they still transmit high-speed signals despite being so thin?

Extremely fine coaxial cables, although with a very small outer diameter, still share a similar basic design concept with ordinary coaxial cables, with the core still revolving around the "center conductor-insulating medium-shielding layer-external protective layer" to construct a controlled signal transmission structure. The center conductor is responsible for transmitting high-speed electrical signals, the external insulating medium is used to control the electrical distance and dielectric environment between conductors, and the shielding layer takes on the important roles of providing a return path, resisting external electromagnetic interference, and reducing signal radiation. The outermost layer is then protected by insulating materials to provide mechanical and environmental protection for the internal structure. For extremely fine specifications like AWG 38, 40, 42, and 44, the conductor diameter, insulating layer thickness, shielding structure, and overall outer diameter are compressed into a very limited space, thus requiring a high level of consistency in materials, concentricity, dimensional tolerances, and stripping accuracy at the ends during manufacturing. Taking CABLINE-CAL as an example, official documentation clearly supports AWG 38/40/42/44 miniature coaxial cables and provides rated current reference values corresponding to different AWG specifications, with AWG 40 at 0.3 A/contact, AWG 42 at 0.24 A/contact, and AWG 44 at 0.1 A/contact. For high-speed signal engineers, the value of extremely fine coaxial cables is not just "thinner," but to maintain stable electrical characteristics as much as possible within limited wiring space; as the wire material becomes thinner, new engineering trade-offs will also form between factors such as mechanical strength, termination reliability, insertion loss, and return loss. Therefore, when developing alternatives for 82876-100B-02-D type 40P high-speed extremely fine coaxial cable assemblies, it is not enough to judge performance solely based on the AWG number; it is also necessary to comprehensively confirm based on specific wire material structure, impedance, length, shielding method, termination technology, and actual high-speed test results.

We offer the 82876-100B-02-D compatible cable harness alternative solutions to help engineers and purchasers reduce the difficulty of supply chain switching.

In response to the application needs of the original I-PEX CABLINE-CAL series ultra-thin coaxial cable assemblies, our company focuses on the research and development and production of ultra-thin coaxial cable assemblies and can match materials, termination structures, cable lengths, pin counts, connectors, and processing technologies according to the actual project requirements of customers. Our company can provide: I-PEX 82876-100B-02-D compatible alternative cable assembly solutions, and can also develop配套 around the connector model 20777-040T-01 used in this solution; the CABLINE-CAL system supported by this connector supports 38AWG, 40AWG, 42AWG, 44AWG micro coaxial specifications. The specific alternative solution can be confirmed through engineering based on the customer's existing BOM, drawings, samples, or physical items. For engineers, if the original design has already determined the connector space, board-end interface, and wiring area, the focus of the alternative development is usually to ensure that the connector assembly relationship, wire sequence, cable length, cable outer diameter, and high-speed electrical performance meet the original design requirements; for purchasing personnel, it can further evaluate the alternative solution from the perspectives of second-source supply, cost optimization, delivery management, and bulk supply. It should be particularly noted that the official recommended material numbers of I-PEX list the 40Pin Plug Housing 20777-040T-01, while 82876-100B-02-D is the official listed material number for 40Pin, 40AWG, 300 mm, 1-N evaluation cable assembly; therefore, in actual projects, the connector model, cable specification, cable length, termination method, and electrical performance should be confirmed as a complete component, rather than simply replacing them based on material number names.

Four, selection and compatibility and alternative solution reference and suggestions: don't just look at "can it be inserted," but also verify "can it work stably."

For engineers and procurement personnel planning to introduce the 82876-100B-02-D compatible cable harness, it is recommended to first clarify that the original project uses the 40P CABLINE-CAL interface system and then confirm the actual cable specification used, whether it is 40AWG or adjusted to 38AWG, 42AWG, or 44AWG according to project requirements. Although the official CABLINE-CAL documentation supports these four miniature coaxial specifications, the conductor size, current carrying capacity, and overall electrical and mechanical characteristics of the cable material are not the same for different AWG ratings, so it cannot be simply assumed that "the finer the AWG, the better" or "AWG being the same means they are completely equivalent." If the original project scheme is 40AWG, 300 mm, 40P, 1-N structure, then the replacement development should prioritize 1:1 engineering verification according to the original structure; if the main procurement objective is to reduce costs or establish a second supplier, then further comparisons can be made between the 38AWG, 40AWG, 42AWG, and 44AWG schemes, but it is necessary to confirm signal integrity and mechanical reliability through sample testing. Especially in high-speed applications, it is recommended to focus on insertion loss, return loss, impedance consistency, crosstalk, and S-parameters at different frequencies, and also to verify the full insertion, locking state, cable outlet direction, bend areas, and actual installation space. The I-PEX official CABLINE-CAL documentation also provides related high-speed SI test data, with test conditions of 30P, AWG40, 45Ω, 100 mm, and GSSGSSG, so when conducting engineering verification, attention should be paid to the differences between test conditions and actual products, and a single test result should not be directly equated to the actual performance under all cable lengths, all AWG ratings, and all cable sequences. For procurement, it is more suitable to adopt the approach of "confirming original product specifications → confirming connectors and cables → replacing samples → verifying dimensions/assembly → verifying electrical performance → small batch trial production → mass import" to reduce project risks caused by direct switching.

I-PEX 82876-100B-02-D is a 40P ultra-thin coaxial cable solution for high-density internal interconnection applications. Its配套CABLINE-CAL connector system features 0.4 mm spacing, low mating height, horizontal insertion, and mechanical locking tabs, and supports AWG 38, 40, 42, and 44 miniature coaxials. For projects that require domestication, second supplier introduction, cost optimization, or supply chain substitution, the truly valuable alternative solution is not simply copying a part number. Instead, it involves establishing a complete compatibility verification system around connectors, ultra-thin coaxial cable materials, AWG specifications, cable length, termination processes, impedance, and high-speed signal integrity. Our company specializes in the production of ultra-thin coaxial cable assemblies and can provide compatible alternative cable assembly development and production for I-PEX 82876-100B-02-D. We can also conduct engineering evaluations for 40AWG as well as 38AWG, 42AWG, 44AWG, and other specifications based on the actual project requirements of customers, providing cable product solutions for engineers' selection and supply chain optimization.

I am【7A Electronic Network】We specialize in providing customized and compatible replacement services for high-speed ultra-thin coaxial cables such as eDP, MIPI, USB3.X/4, LVDS, etc. If you need technical support, please contact Manager Zhang.18913228573（WeChat same number）.