With the continuous development of products such as notebooks, foldable screens, in-car imaging, drones, and medical equipment towards thinness, intelligence, and high-definition, the internal wiring system is increasingly demanding in terms of high-speed transmission, anti-interference, and space utilization. Under this trend, the traditional FPC (Flexible Printed Circuit) and FFC (Flexible Flat Cable) are gradually showing their performance bottlenecks. The ultra-fine coaxial cable (Micro Coaxial Cable) is becoming an ideal solution for high-speed signal connections inside various high-precision equipment due to its unique structure and excellent electrical characteristics. Today, we take the I-PEX 20497-026T-30 connector as an example to analyze the technical advantages and application highlights of the ultra-fine coaxial cable.
Five Core Advantages of ultra-fine coaxial lines
Excellent signal integrity, high-speed low-loss transmission
Micro coaxial cable adopts a typical coaxial structure: signal core + insulation layer + shielding layer + sheath layer. This structure can effectively block external electromagnetic interference (EMI), reduce signal leakage, ensure signal integrity (SI), and perform stably in high-speed data transmission.
Ultra-fine wire diameter, releasing more space
The outer diameter of a single micro coaxial cable can be as thin as 0.3 mm or even smaller, much smaller than traditional ribbon cables or ordinary coaxial cables, which can significantly improve the space utilization rate inside the product and is suitable for compact electronic devices.
High flexibility, more durable against bending and breaking
Extremely thin coaxial cables have excellent flexibility, can withstand repeated bending and dynamic motion, maintain stable connections in multi-active structures such as notebook hinges and foldable screen modules, and have a longer lifespan than conventional FPC.
Multi-layer shielding structure, stronger anti-interference capability
Most micro coaxial cables adopt a single-layer or double-layer metal braid/aluminum foil shielding design, effectively reducing EMI (electromagnetic interference) and RFI (radio frequency interference), significantly enhancing the system's noise resistance performance.
Flexible multi-core assembly, meets complex wiring requirements
Micro coaxial cable can realize flexible combinations of single-core, double-core, 4-core, 8-core, and even 30-50 cores, and can easily realize high-speed signal and power mixed wiring when combined with high-density miniature connectors (such as the I-PEX 20497 series).
I-PEX 20497-026T-30 connector analysis
Product Overview
Series Name: CABLINE®-UA II plug housing
Adapter cables: micro coaxial cable (AWG #46/#44/#42)
• Number of pins: 26 Pin (optional 32/40/50 Pin versions)
• Spacing: 0.3 mm high-density design
Structure and dimensions
Contact method: adopts a "W-Point" double-point contact structure to ensure high reliability, multi-point grounding, and enhanced shielding performance.
• Size specification (26 Pin): Height ≤ 1.37 mm (standard 1.27 mm), depth only 2.9 mm.
Material: The contact piece is made of phosphor copper plated with nickel and gold, and the housing is made of LCP flame-retardant plastic (UL94V-0 level).
Highlight of the Application
Super-thin high-density structure: height of only 1.37 mm, particularly suitable for notebook hinges, folding screens, camera modules, and other space-limited scenarios.
High compatibility: Compatible with micro coaxial cables with outer diameter of about 0.3 mm, compatible with 42/44/46 AWG specifications.
With excellent signal integrity, excellent flexibility, and strong anti-interference capability, the ultra-thin coaxial cable (Micro Coaxial Cable) has become the mainstream solution for internal connections of high-end electronic devices. When used with high-density connectors such as I-PEX 20497-026T-30, it can demonstrate stable and outstanding performance in scenarios with limited space, high-speed transmission, or high reliability.
We have been focusing on the design and customization of high-speed cable harnesses and ultra-thin coaxial cables for a long time, committed to providing customers with stable and reliable high-speed interconnection solutions. If you have any related needs or want to learn more, please contact: Manager Zhang.
18913228573 (WeChat number).
