As notebooks, foldable screens, in-car imaging, drones, medical equipment, and other products continue to develop towards thinness, intelligence, and high-definition, the internal wiring system's requirements for high-speed transmission, anti-interference, and space utilization are becoming more stringent. In this trend, the traditional FPC (Flexible Printed Circuit) and FFC (Flexible Flat Cable) are gradually showing performance bottlenecks. The ultra-fine coaxial cable (Micro Coaxial Cable) is becoming an ideal solution for high-speed signal connections within various high-precision devices 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.
The five core advantages of ultra-fine coaxial cables
Excellent signal integrity, high-speed low-loss transmission
Micro coaxial cable employs a typical coaxial structure: signal core + insulation layer + shielding layer + sheath layer. This structure effectively blocks external electromagnetic interference (EMI), reduces signal leakage, ensures signal integrity (SI), and performs stably in high-speed data transmission.
Extremely thin wire diameter, releasing more space
The outer diameter of a single micro coaxial cable can be as fine as 0.3 mm or even smaller, much smaller than traditional ribbon cables or ordinary coaxial cables, which can significantly improve the utilization of internal space in products and is suitable for compact electronic devices.
High flexibility, more durable against bending and breaking
Extremely fine coaxial cables possess excellent flexibility, can withstand repeated bending and dynamic movement, and maintain stable connections in multi-active structures such as notebook hinges, folding screen modules, etc., with a lifespan superior to conventional FPC.
Multi-layer shielding structure, stronger anti-interference capability
Most micro coaxial cables use a single-layer or double-layer metal braid/aluminum foil shielding design, effectively reducing EMI (electromagnetic interference) and RFI (radio frequency interference), significantly improving the noise resistance of the system.
Multi-core assembly is flexible, meeting complex wiring requirements
Micro coaxial cable can achieve flexible combinations of single-core, double-core, 4-core, 8-core, and even 30-50 cores. When used in conjunction with high-density miniature connectors (such as the I-PEX 20497 series), it can easily realize mixed wiring of high-speed signals and power.
I-PEX 20497-026T-30 Connector Explanation
Product Overview
Series Name: CABLINE®-UA II plug housing
Compatible wire: micro coaxial cable (AWG #46/#44/#42)
• Pin count: 26 Pin (optional 32/40/50 Pin versions)
• Spacing: 0.3 mm High-density design
Structure and dimensions
Contact method: Adopt the "W-Point" double-point contact structure to ensure high reliability, multi-point grounding, and enhanced shielding performance.
• Dimension specification (26 Pin): Height ≤ 1.37 mm (standard 1.27 mm), depth only 2.9 mm.
Material: The contact piece is gold-plated phosphorus copper with nickel, and the shell is made of LCP flame-retardant plastic (UL94V-0 grade).
③ Application highlights
Ultra-thin high-density structure: height of only 1.37 mm, especially suitable for laptop hinges, foldable screens, camera modules, and other space-limited scenarios.
High compatibility: compatible with micro coaxial cables with an 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 in high-end electronic equipment. 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-fine coaxial cables for a long time, committed to providing stable and reliable high-speed interconnection solutions. If you have any related needs or want to learn more, please contact: Manager Yin.
18913280527 (WeChat same number)。
