I-PEX 82671-100B-01-D 40P high-speed signal transmission ultra-thin coaxial cable replacement

One, 40Pin high-density design, meets the wiring requirements of high-speed, miniaturized equipment

In laptops, tablets, high-speed display devices, smart terminals, and other electronic devices with limited space, engineers often need to address multiple issues simultaneously when designing internal high-speed signal connections, such as "thin lines, stable transmission, strong anti-interference capability, and small connector space." The I-PEX CABLINE-CA II series is a 0.4mm spacing, horizontally pluggable ultra-thin coaxial connection solution specifically designed for such applications. The 40Pin version has a high signal density and can be used for internal high-speed signal connections in devices. According to I-PEX official data, CABLINE-CA II uses a 0.4mm Contact Pitch, supports Micro-Coaxial Cable in 40Pin specifications, and features full EMI shielding and mechanical locking structure.

The product introduced this time is I-PEX 82671-100B-01-D, which belongs to the CABLINE-CA II 40Pin ultra-thin coaxial cable assembly, with a cable length of 100mm. It uses 40AWG Micro-Coaxial Cable, and both ends are equipped with connection ends, defining the line position as 1--1. The connector model used for the cable end is 20680-040T-01, corresponding to the CABLINE-CA II 40Pin Plug Housing. For engineers, this 40Pin, 0.4mm pitch, 40AWG ultra-thin coaxial cable assembly can achieve high-density signal connections within a limited space, while also considering high-speed signal transmission and internal device space layout. For purchasers, the Pin number, Pitch, AWG, length, end connector, and 1--1 structure can be used as important specifications for material acceptance and supplier evaluation. I-PEX official materials also list 82671 as a standard Harness model with 40Pin, 40AWG, 100mm, and 1-1.

Why is it said that ultra-fine coaxial cable is more resistant to interference than FPC? The key lies in independent shielding and signal isolation.

For high-speed signal connections, whether the wire is thin enough is just one aspect. What is more important is whether the signal can maintain good integrity during transmission and whether external electromagnetic noise is easily coupled into the signal channel. An important structural difference between extremely thin coaxial cables and ordinary FPCs is that extremely thin coaxial cables can form a relatively independent coaxial transmission structure for each high-speed signal path: the central conductor is responsible for signal transmission, and the outer shielding layer covers the signal channel, forming a clearer isolation between the signal and the external environment structurally. Therefore, in high-density, high-speed, and strong electromagnetic interference environments, extremely thin coaxial cables are usually easier to achieve controlled impedance and better anti-crosstalk capability.

This is why engineers prefer the Micro-Coaxial solution over simply using FPC as a substitute in scenarios that have high requirements for EMI, crosstalk, and high-speed signal integrity. CABLINE-CA II itself adopts the ZenShield® full shielding design and multi-point grounding structure, and I-PEX officially positions it as an EMC solution, emphasizing that its full shielding structure can improve the grounding path while supporting high-speed data transmission; the official 40Pin test materials also provide high-speed test conditions for AWG #40, 100mm Micro-Coaxial Cable, and use 32Gbps/lane PAM4 as the reference transmission capability.

Certainly, from an engineering perspective, it cannot be simply understood as "all ultra-fine coaxial cables are always better than all FPCs in terms of anti-interference." Actual EMI performance also depends on factors such as cable structure, shielding layer, grounding method, impedance control, connector structure, PCB layout, and system working frequency. However, in scenarios requiring high-density and high-speed signal transmission, an independent coaxial shielding structure indeed provides engineers with a clear structural advantage for signal isolation and EMI control. For this 40Pin ultra-fine coaxial cable assembly, the 40AWG cable material combined with the CABLINE-CA II full shielding connector structure can achieve a good balance between miniaturized wiring and high-speed signal integrity.

How do engineers and purchasing personnel select products? Reference and suggestions for compatibility and alternative solutions

For engineers, when selecting, one cannot only look at the "40Pin" parameter, but should confirm from the complete harness system. The core reference specifications of this product are: I-PEX 82671-100B-01-D, 40Pin, 40AWG Micro-Coaxial Cable, 100mm, 1--1 wire position structure, and the wire harness connector model 20680-040T-01. At the same time, the CABLINE-CA II series adopts a 0.4mm pitch, horizontal insertion and removal structure, and the official data shows that the height of its 40Pin version is 0.95±0.15mm, and it supports AWG 40 Micro-Coaxial Cable; therefore, when carrying out domestic substitution or introducing a second supplier, it is recommended to focus on checking the number of pins, contact pitch, wire AWG, harness length, both ends of the connection structure, connector model, assembly size, and actual high-speed signal performance, and not just judge whether it can be directly replaced based on the appearance size.

For purchasing personnel, the value of alternatives goes beyond whether they can purchase them, including supply stability, batch consistency, delivery time, cost, and subsequent customization capabilities. In the I-PEX official standard Harness, the 40Pin 1--1 structure, except for the 100mm version of 82671, also includes the 200mm version of 82672 and the 300mm version of 82673, indicating that the same product line can be selected for different lengths according to the actual wiring distance inside the equipment. If customers are looking for a compatible alternative product for I-PEX 82671-100B-01-D, they can verify it by comparing key specifications such as 40Pin, 40AWG, 100mm, 1--1 structure, and 20680-040T-01 cable end connector, and then conduct sample testing and high-speed signal verification in combination with actual equipment. Our company can provide: I-PEX 82671-100B-01-D compatible alternative cable harness solution, which can provide ultra-thin coaxial cable harness manufacturing services for engineering verification, sample prototyping, and bulk procurement needs, thereby increasing second supplier and domestic alternative options for customers.

Four, an alternative choice of ultra-fine coaxial cable束 for high-speed electronic devices, balancing signal stability and miniaturization

With the continuous development of electronic devices towards thinness, high speed, and high integration, the challenges faced by internal wiring harnesses have gradually shifted from the simple task of "connecting signals" to "stably transmitting high-speed signals within limited space." For engineers, 40Pin, 0.4mm pitch, 40AWG ultra-thin coaxial cables, and full shielding connection structures enable these harnesses to meet both high-density wiring and high-speed signal transmission requirements; for purchasers, clear product models, connector models, wire specifications, length, and wire position structures allow for a more specific and clear evaluation of alternative products, and facilitate the establishment of standardized supplier introduction and verification processes. The official data of CABLINE-CA II indicates that this series supports 20/30/40/50Pin and is designed for high-speed applications up to 32Gbps/lane, while also featuring ZenShield® full shielding and mechanical locking structures.

I-PEX 82671-100B-01-D is a typical 40Pin, 40AWG, 100mm, 1-1 structure ultra-thin coaxial cable assembly, suitable for internal connection applications in electronic devices that require high-speed transmission, high-density connection, miniaturization, and EMI control. Our company specializes in the production and manufacturing of ultra-thin coaxial cable assemblies, offering compatible alternative solutions around customers' actual product structures and application requirements to help engineers reduce the difficulty of selection and verification, and at the same time, provide more flexible supply chain choices for purchasing personnel. For customers looking for alternative products to I-PEX 82671-100B-01-D, specific device matching, sample verification, and mass import can be combined.

I am【7A Electronic Network】Our company has a complete production system and technical team for ultra-fine coaxial cable assemblies, capable of meeting customized and alternative needs for various coaxial cable assemblies; welcome to contact: Manager Zhang18913228573 (WeChat number).