With the continuous evolution of electronic devices towards thinness and high-speed, micro coaxial cable has become an indispensable internal connection solution in fields such as consumer electronics, medical imaging, drones, and vehicle imaging. In high-frequency, high-speed, and high-density signal transmission scenarios, how to correctly select micro coaxial cable bundles is the key to ensuring system performance and reliability. This article will guide you through the five core factors of micro coaxial cable bundle selection and introduce a widely used high-density connector—I-PEX 20634-130T-02.
Transmission frequency and rate requirements
Different devices have varying requirements for signal frequency and transmission rate. When selecting, it is essential to ensure that the harness and connector can meet the system bandwidth and signal integrity requirements. Micro coaxial cable has excellent high-frequency transmission performance and is particularly suitable for high-speed digital signal systems, such as MIPI, LVDS, PCIe, and other interfaces.
Interface types and connector compatibility
Extremely thin coaxial cable bundles usually require the use of connectors from brands such as I-PEX, JAE, etc. According to the structural dimensions and installation method of the equipment, the matching model should be selected. Among them, the I-PEX 20634-130T-02 is renowned for its 0.4 mm minimum spacing and 30 Pin high-density design, widely used in high-end laptops, industrial cameras, and medical equipment, balancing space saving and performance stability.
3. EMI Shielding Performance
In high-speed signal systems, electromagnetic interference (EMI) is one of the main factors affecting signal quality. High-quality micro coaxial cables usually have a woven or metallic foil shielding layer, which can effectively suppress interference, ensure signal integrity and system immunity, and are suitable for industrial and imaging systems with stringent EMI requirements.
4., Radius of curvature and flexibility
In compact and space-limited devices, the flexibility and bendability of the wire harness are particularly important. micro coaxial cable has an extremely small diameter and excellent flexibility, allowing for multiple bends in confined spaces without affecting transmission performance, making it very suitable for internal wiring in thin and light devices.
5. Installation Technology and Reliability
The extremely thin coaxial cable束 requires very high process requirements during welding or crimping. The contact stability of the connector terminals is directly related to the service life and signal stability of the entire machine. The I-PEX 20634-130T-02 adopts an upper-mounted FPC connection method, paired with a stable locking structure, which can still maintain reliable contact after multiple insertions and removals, meeting the stability requirements for long-term use.
I-PEX 20634-130T-02 connector details
Product series and positioning
This model belongs to the CABLINE®-CA (20525 series) miniature coaxial connector, with a pitch of only 0.4 mm, specifically designed for high-density signal transmission.
Can be matched with various wire materials such as micro coaxial cable, FPC, and twisted pair, widely used in high-performance equipment such as consumer electronics, industrial automation, and medical imaging.
2. High-speed transmission and signal integrity
Standard configuration supports 20 Gbps/lane NRZ transmission; paired with the paddle card, it can be upgraded to 64 Gbps PAM4 (applicable to some 50-pin models).
Typical wire materials use AWG #40, 50 Ω characteristic impedance, which have an extremely high match with I-PEX series devices, ensuring signal integrity and low reflection.
Cable fitting and processing specifications
Supports a variety of miniature cable structures (#40 or finer), compatible with micro-coaxial, twisted pair, and FPC.
The 30-pin model (20634-130T-02) is commonly used for MIPI / LVDS signal cables and can be combined with welding and UV curing sealing technology to ensure mechanical strength and protective performance.
Ultra-fine coaxial cable束, as a key component for high-speed signal transmission, its selection needs to take into account a variety of factors such as frequency, interface, shielding, flexibility, and process. Choosing high-density, high-performance connectors like the I-PEX 20634-130T-02 can not only optimize the system layout but also significantly enhance the transmission efficiency and stability of the whole machine.
We have been focusing on the design and customization of high-speed signal cable harnesses and ultra-thin coaxial cable harnesses 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 number)。
