In today's rapidly advancing field of high-speed signal transmission and equipment miniaturization, the extremely fine coaxial cable (Micro Coaxial Cable) has emerged as a new type of precision cable. With its excellent electrical performance and extremely high flexibility, it has become the core connection solution for miniaturized electronic products such as laptops, high-definition cameras, drones, and smart wearable devices. This article will systematically introduce the structure and advantages of the extremely fine coaxial cable and will focus on the highly acclaimed I-PEX 20878-030T-01 connector.
What is a super-thin coaxial cable bundle?
Micro coaxial cable is a high-precision transmission material with a structure similar to traditional coaxial cables but with a smaller diameter and better performance. Its typical structure includes:
Inner conductor: usually made of high-conductivity silver-plated copper wire.
Insulation layer: Use ultra-thin polyethylene (PE) or fluorinated ethylene propylene (FEP) materials to ensure low dielectric loss.
Screening layer: high-density metal braided layer, effectively suppresses electromagnetic interference.
Sheath layer: Made of wear-resistant and high-temperature resistant materials, ensuring long-term stable use.
The core advantages of ultra-fine coaxial lines
Excellent anti-interference performance — the high-density shielding layer effectively reduces EMI impact, ensuring stable transmission of high-speed signals.
Excellent flexibility — suitable for internal wiring in miniaturized devices with limited space.
Low signal attenuation —— supports higher-speed and longer-distance signal transmission.
Lightweight design -- meets the design trend of device thinning and integration.
Introduction to I-PEX 20878-030T-01 connector
Core Features and Technical Parameters:
Series positioning: CABLINE®-UM series, 40 Gbps/lane (PAM3), 0.4 mm pitch locking type vertical connector.
• Number of pins: 30 Pin (usually used with the 20877-030T-01 connector component)
• Contact pitch: 0.4 mm;
• Insertion Height (Mated Height): Maximum 2.35 mm, typical value 2.20 ± 0.15 mm (including lock cover)
Compatible Line Gauge: Supports micro-coax AWG#38–#46 (50 Ω) and discrete wire.
• Transfer Rate: Supports high-speed interfaces such as USB4 / Thunderbolt 4 / PCIe Gen4 / eDP HBR3, with a maximum of 20 Gbps/lane for single channel, and up to 40 Gbps/lane in PAM3 mode.
• Shielding structure: Adopting ZenShield® full shielding design with multi-point grounding, effectively enhancing EMI suppression capability.
Mechanical lifespan: ≥30 insertion and removal cycles.
I-PEX 20878-030T-01, with its high-density structure, high-speed transmission capability, and excellent shielding performance, has become the preferred Micro-Coax connection solution for many high-end electronic products. It is widely used in notebook camera modules, vehicle-mounted image systems, as well as high-speed display interfaces such as eDP/HDMI 4.0.
Four, typical application scenarios of ultra-fine coaxial beam
Super-thin laptop camera module
Car HD Image System
High-resolution LCD display
Drone high-definition camera module
Medical imaging and industrial detection equipment
With excellent signal integrity and flexible wiring characteristics, extremely thin coaxial cable assemblies are becoming the key carriers for high-frequency and high-speed transmission. The I-PEX 20878-030T-01, with its high performance, high reliability, and excellent electromagnetic compatibility design, showcases strong technical strength and application value in various industries.
We have been focusing on the design and customization of high-speed signal cable harnesses and ultra-fine coaxial cable harnesses for a long time, committed to providing stable and reliable high-speed interconnect solutions. If you have any related needs or want to learn more, please contact: Manager Yin.
18913280527 (WeChat number)。
