Today, with the rapid acceleration of high-speed signal transmission and equipment miniaturization, ultra-thin coaxial cables (Micro Coaxial Cable) have emerged as a new type of precision cable. Thanks to their excellent electrical performance and extremely high flexibility, they have 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 ultra-thin coaxial cable bundles, and focus on the highly acclaimed I-PEX 20878-030T-01 connector.
What is a micro 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: Generally, silver-plated copper wire with high conductivity is used.
Insulation layer: Use ultra-thin polyethylene (PE) or fluorinated ethylene propylene (FEP) materials to ensure low dielectric loss.
• Shielding layer: High-density metal braided layer, effectively suppresses electromagnetic interference;
Sheath layer: Made of wear-resistant and high-temperature resistant material to ensure long-term stable use.
The core advantages of extremely 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 inside space-limited miniature devices.
Low signal attenuation —— supports higher speed and longer distance signal transmission.
Lightweight design — meets the design trend of device slimming 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 locked type vertical connector;
Pin count: 30 Pin (often used with the 20877-030T-01 connector module)
Contact spacing (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;
• Transmission 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.
Screening Structure: Adopting ZenShield® full shielding design and multi-point grounding to effectively enhance EMI suppression capability.
• Mechanical life: ≥30 insertion and extraction 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, widely used in notebook camera modules, in-vehicle imaging systems, and high-speed display interfaces such as eDP/HDMI 4.0.
Four, typical application scenarios of ultra-fine coaxial beam
Ultra-thin laptop camera module
In-car high-definition imaging system
High-resolution liquid crystal 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 carrier for high-frequency and high-speed transmission. The I-PEX 20878-030T-01, with its high performance, high reliability, and excellent electromagnetic compatibility design, demonstrates strong technical strength and application value in various industries.
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 stable and reliable high-speed interconnection solutions. If you have any related needs or would like to learn more, please contact: Manager Zhang.
18913228573 (WeChat same number).
