Micro Coaxial Cable factory

How to Select Micro Coaxial Cable Specifications

1. Define Transmission Requirements‌
   ‌Frequency & Bandwidth‌: Choose cables based on signal type and frequency range. For example:
   ‌High-frequency signals (e.g., 5G, mmWave radar)‌: Requires cables supporting ‌40 GHz or higher‌‌16.
   ‌Digital audio (e.g., SPDIF)‌: Select ‌75Ω impedance‌ to ensure compatibility with device interfaces‌45.
   ‌Attenuation Tolerance‌: Use low-loss cables (e.g., ‌<0.5 dB/m@6 GHz‌) for long-distance transmission to minimize signal degradation‌23. ‌2. Evaluate Environmental Conditions‌ ‌Temperature Range‌: ‌Extreme heat (200°C)‌: Opt for fluoropolymer jackets (e.g., FEP)‌23. ‌Low temperatures or outdoor use‌: Cold-resistant materials (e.g., PTFE insulation) for ‌-55°C environments‌‌34. ‌Mechanical Stress‌: For frequent bending (e.g., hinges in security devices), prioritize high flex life (>100,000 cycles)‌26.
   ‌3. Size and Construction‌
   ‌Outer Diameter Constraints‌:
   ‌Ultra-compact devices (e.g., TWS earphones)‌: Micro coaxial cables with ‌0.5–1.0 mm outer diameter‌‌26.
   ‌Industrial equipment wiring‌: ‌1.2–2.2 mm outer diameter‌ to balance durability and flexibility‌34.
   ‌Conductor Material‌:
   ‌High conductivity‌: Silver-plated copper cores reduce resistance and enhance high-frequency signal integrity‌27.
   ‌Cost-sensitive applications‌: Oxygen-free copper (OFC) as an economical alternative‌78.
   ‌4. Shielding and EMI Resistance‌
   ‌EMC Suppression‌: Dual-layer shielding (aluminum foil + tin-plated copper braid) blocks ‌>90% of EMI‌, ideal for automotive or medical electronics‌12.
   ‌Grounding‌: Ensure reliable shielding-to-connector soldering to prevent signal leakage‌68.
   ‌5. Connector Compatibility‌
   ‌Interface Types‌:
   ‌Miniature devices‌: Use ultra-small connectors like IPEX or MMCX‌16.
   ‌High-speed data‌: Match cable impedance (50Ω or 75Ω) to USB4 or HDMI 2.1 interfaces‌58.
   ‌Termination‌: Injection molding or laser welding improves connector stability‌68.
   ‌6. Certifications and Standards‌
   ‌Environmental Compliance‌: Select lead-free, halogen-free materials compliant with ‌RoHS 3.0‌‌28.
   ‌Industry Certifications‌:
   ‌Automotive electronics‌: Pass ‌MIL-STD-202‌ vibration testing‌34.
   ‌Medical devices‌: Meet ISO 13485 biocompatibility requirements‌23.
   ‌Application-Specific Specification Examples‌
   ‌Scenario‌ ‌Recommended Specifications‌ ‌Source‌
   ‌Medical endoscopes‌ 0.8 mm outer diameter, PTFE insulation, dual-layer shielding, ≤3 mm bend radius ‌12
   ‌5G base station antennas‌ 50Ω impedance, 40 GHz bandwidth, FEP jacket ‌16
   ‌Vehicle ADAS systems‌ High-temperature resistance (200°C), aluminum foil shielding, tin-plated copper ‌34
   ‌AR/VR headset audio‌ 75Ω impedance, 24AWG silver-plated core, USB-C interface ‌68
   ‌Key Parameter Comparison‌
   ‌Parameter‌ ‌Budget Option‌ ‌High-Performance Option‌
   ‌Conductor‌ Oxygen-free copper (OFC) Silver-plated or single-crystal copper
   ‌Shielding‌ Single-layer aluminum foil Aluminum foil + copper braid dual-layer
   ‌Attenuation‌ 1.2 dB/m@6 GHz 0.3 dB/m@6 GHz
   ‌Price‌ $0.5–1.0/m $2.0–5.0/m
   ‌Summary‌: Selecting micro coaxial cables requires balancing signal requirements, environmental resilience, mechanical strength, and cost. Prioritize high-frequency performance, EMI resistance, and miniaturization, while ensuring compliance with industry certifications for reliability‌13.

‌Keywords‌: Micro coaxial cable selection, impedance matching, EMI shielding, RoHS 3.0, high-frequency cables.