I-PEX 82068-100B-02-D 26P high-speed signal transmission ultra-thin coaxial cable replacement

High-speed and miniaturized device application ultra-fine coaxial cable assembly solution

With the continuous development of laptop computers, smart display devices, VR/AR equipment, industrial camera equipment, and precision electronic terminals towards thinness and high-speed, there is a higher requirement for signal connection components inside the devices. Traditional FPC cables are gradually facing challenges in signal integrity, anti-interference ability, and mechanical reliability in some high-speed, high-reliability, and complex space wiring applications. Thanks to their excellent high-speed transmission performance, flexibility, and good EMI anti-interference ability, extremely thin coaxial cables have become an important solution for internal connections in an increasing number of precision electronic devices.

This article introduces the product as an I-PEX 82068-100B-02-D compatible alternative for ultra-fine coaxial cable harness solutions. The product corresponds to the I-PEX CABLINE®-UA II series 26Pin Micro Coaxial Harness application. The original product uses the ultra-fine coaxial connection structure of the CABLINE-UA II series, featuring a 0.3mm Pitch, miniaturized Plug design, and high-speed signal transmission capabilities, suitable for internal connections in electronic devices with limited space and high requirements for signal stability. According to I-PEX official data, the CABLINE-UA II series supports 26Pin, 32Pin, 40Pin, and 50Pin configurations, and supports AWG42, AWG44, and AWG46 specifications of ultra-fine coaxial cable materials.

Section 2: Analysis of the Composition of Ultra-Fine Coaxial Cable Structure and the Working Principle of High-Speed Signal Transmission

A very fine coaxial cable assembly is a precision cable component designed for high-speed signal transmission, with its core structure consisting of a central conductor, insulation layer, shielding layer, and outer sheath. Although the overall outer diameter is very small, its internal structure still maintains the basic principle of traditional coaxial cables, "coaxial transmission," by forming a stable electromagnetic environment through the shielding layer, achieving low-loss transmission of high-speed signals.

In terms of structural composition, extremely fine coaxial cables mainly consist of the following parts:

Center conductor: Responsible for transmitting high-speed electrical signals, usually using a very fine copper conductor structure. Due to the small diameter, an optimized design needs to be made between electrical conductivity and mechanical strength.

Insulating medium layer: Enclosed outside the central conductor, used for isolating the signal conductor from the external shielding layer and controlling the characteristic impedance during the signal transmission process.

Metal shielding layer: Typically composed of woven shielding or metal foil structure, used to block external electromagnetic interference, while reducing electromagnetic leakage generated by internal high-speed signals, improving signal integrity.

The outer protective layer: Provides mechanical protection capabilities, enabling the harness to have bending resistance, wear resistance, and long-term reliable operation.

The working principle of extremely thin coaxial cables mainly relies on the center conductor to transmit high-speed differential signals, with the shielding layer acting as a reference ground to form a stable transmission environment. When high-speed signals propagate through the cable, the shielding structure can effectively reduce crosstalk, noise interference, and external electromagnetic influence, thereby ensuring the quality of high-speed data transmission.

III. I-PEX 82068-100B-02-D compatible cable assembly product features and engineering application value

In response to the application needs of customers for high-speed, small space electronic devices, our company has launched the **I-PEX 82068-100B-02-D compatible alternative ultra-thin coaxial cable assembly product**, which can achieve alternative development in the same application direction as the original model.

This product adopts the CABLINE-UA II series 26Pin connection scheme, with the connector model at the wire end being: 20497-026T-30.

The main advantages of the product include:

Miniaturized design: The 0.3mm Pitch connection structure can effectively reduce PCB installation space, meeting the layout requirements of thin and light devices.

High-speed signal transmission capability: The extremely thin coaxial structure can provide stable impedance control and good signal integrity, suitable for high-speed display, camera module, and data transmission applications.

Excellent EMI performance: Through coaxial shielding structure and connector grounding design, reduce electromagnetic interference in high-speed signal environment, improve equipment operation stability.

 High flexibility wiring capability: The extremely thin coaxial cable has excellent bending performance and can meet the wiring needs in notebook hinges, narrow spaces, and complex internal structures. According to the official information of CABLINE-UA II, the 26-pin cable assembly scheme made of Micro Coax with an outer diameter of about 0.29mm can pass through a Φ2.65mm inner diameter space, suitable for design of hinge-like structures.

Four, selection and compatibility and alternative solutions reference and suggestions

For engineering and procurement personnel, when selecting a CABLINE-UA II compatible alternative for ultra-thin coaxial cable assemblies, it is necessary to pay close attention to the connector series, pin count, cable specification, impedance requirements, cable length, and both-end structural definitions.

Recommend key confirmation of the following parameters for the I-PEX 82068-100B-02-D model replacement application:

 Product Model Reference: I-PEX 82068-100B-02-D

  Corresponding specification: 26Pin CABLINE-UA II Micro Coaxial Harness.

Cable Length: 200mm;

  Micro Coax specification: 44AWG;

  Wire end connector: 20497-026T-30

  Suitable wire specifications: 42AWG / 44AWG / 46AWG

When conducting substitution development, the engineering end is recommended to focus on verifying:

Firstly, confirm the connector mechanical dimensions and mating relationship to ensure they match the PCB socket.

Second, confirm the specifications of the Micro Coax cable, including outer diameter, impedance, shielding structure, and signal performance.

Third, confirm the cable length, exit direction, termination method, and fixing process.

Fourth, conduct high-speed signal testing, including insertion loss, return loss, crosstalk, and signal integrity verification.

I-PEX 82068-100B-02-D serves as a representative model of the 26Pin ultra-thin coaxial cable assembly for the CABLINE-UA II series. With its miniaturized structure, high-speed transmission capability, and excellent EMI performance, it is widely used in the internal connections of electronic devices with limited space and high reliability.

I am[7A Electronic Network]We professionally provide customized and compatible alternative 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 number).