Micro Coaxial Cable factory

Micro Coaxial Cable Buying Guide

1. Understand Your Application Requirements‌
   ‌Frequency Range‌: Determine the operating frequency of your application (e.g., 1 GHz to 40 GHz). Higher frequencies require cables with low signal loss and stable impedance.
   ‌Signal Integrity‌: For sensitive applications (e.g., RF, microwave systems), prioritize cables with excellent shielding and low attenuation.
   ‌Environment‌: Consider temperature range, flexibility, and resistance to chemicals, moisture, or abrasion based on the operating conditions.
   ‌2. Key Specifications to Evaluate‌
   ‌a. Impedance‌
   Most micro coaxial cables have a standard impedance of ‌50Ω‌ (common in RF applications) or ‌75Ω‌ (used in video and telecom systems). Ensure compatibility with your devices.
   ‌b. Attenuation (Loss)‌
   Measured in dB/meter, attenuation increases with frequency. Select cables with ‌low attenuation values‌ for long-distance or high-frequency applications.
   ‌c. Shielding Effectiveness‌
   Look for cables with ‌multiple layers of shielding‌ (e.g., braided shield + foil) to minimize electromagnetic interference (EMI) and crosstalk.
   ‌d. Conductor Material‌
   ‌Copper‌ (bare or silver-plated) is common for its conductivity. Silver-plated conductors offer better performance at higher frequencies.
   ‌e. Dielectric Material‌
   Materials like PTFE (Teflon) or Foam PE provide stable electrical properties and reduce signal loss.
   ‌f. Outer Jacket‌
   Choose jackets made of PVC, polyurethane, or FEP for durability, flexibility, and environmental resistance.
   ‌3. Connector Compatibility‌
   Ensure the cable’s connectors match your device’s interface (e.g., SMA, SMB, MCX, or MHF4). Check for:
   ‌Gender‌ (male/female).
   ‌Polarity‌ (standard or reverse).
   ‌Mounting style‌ (straight, right-angle, or board-mount).
   ‌4. Size and Flexibility‌
   ‌Diameter‌: Micro coaxial cables typically range from ‌0.8 mm to 2.2 mm‌. Smaller diameters are ideal for compact spaces but may sacrifice shielding.
   ‌Bend Radius‌: Opt for highly flexible cables if routing through tight spaces or moving parts.
   ‌5. Industry Standards and Certifications‌
   Verify compliance with standards like ‌MIL-SPEC‌ (for aerospace/defense), ‌RoHS‌ (restricted hazardous substances), or ‌ISO certifications‌ for quality assurance.
   ‌6. Popular Brands and Suppliers‌
   Reputable manufacturers include ‌Huber+Suhner‌, ‌TE Connectivity‌, ‌Molex‌, and ‌Samtec‌. Compare specifications and warranties.
   ‌7. Cost vs. Performance‌
   Balance your budget with performance needs. For critical applications, invest in higher-grade cables to avoid signal degradation.

文章38.75-5同轴电缆的特点 Characteristics of 75-5 Coaxial Cable

1. Structure and Construction‌
   The 75-5 coaxial cable is engineered with layered materials to optimize signal integrity and durability:

‌Conductor‌: A central solid or stranded copper core (typically 1.0–1.2 mm in diameter) ensures efficient signal transmission.
‌Dielectric Insulation‌: A foam polyethylene (PE) or solid polyethylene layer surrounds the conductor, providing stable impedance and minimizing signal loss.
‌Shielding‌:
‌Inner Shield‌: Aluminum foil or copper braid to block electromagnetic interference (EMI).
‌Outer Shield‌: Additional braided copper or aluminum for enhanced noise resistance.
‌Jacket‌: A durable PVC or weather-resistant outer layer protects against physical damage, moisture, and UV exposure.
‌2. Key Electrical Characteristics‌
‌Impedance‌: 75 ohms (±3Ω tolerance), optimized for video and RF signal transmission.
‌Frequency Range‌: Suitable for frequencies up to ‌1 GHz‌, making it ideal for analog video, CCTV, and broadband applications.
‌Attenuation‌: Approximately ‌6.9 dB/100m at 100 MHz‌ and ‌22 dB/100m at 1 GHz‌, depending on materials and shielding.
‌Capacitance‌: ~54 pF/m, ensuring minimal signal distortion.
‌Velocity of Propagation‌: ~85% (for foam dielectric), indicating efficient signal speed.
‌3. Advantages of 75-5 Coaxial Cable‌
‌High Signal Integrity‌: The dual-layer shielding and 75Ω impedance minimize EMI and signal loss, critical for video and data transmission.
‌Durability‌: Robust outer jacket resists wear, moisture, and temperature fluctuations (-40°C to +80°C).
‌Cost-Effective‌: Balances performance and affordability compared to higher-grade cables like RG-11.
‌Flexibility‌: Suitable for indoor and outdoor installations, including tight spaces and long-distance runs.
‌4. Common Applications‌
‌Broadcast and CCTV Systems‌: Transmits analog video signals in security cameras, surveillance networks, and TV broadcasting.
‌Cable TV (CATV)‌: Distributes RF signals for cable television and internet services.
‌Telecommunications‌: Used in base stations, antennas, and satellite communication setups.
‌Industrial Systems‌: Connects sensors, monitors, and control devices in automation environments.
‌5. Comparison with Similar Cables‌
‌Feature‌ ‌75-5 (RG-59)‌ ‌RG-6‌ ‌RG-11‌
‌Impedance‌ 75Ω 75Ω 75Ω
‌Conductor Size‌ 1.0–1.2 mm 1.8–2.2 mm 2.5–3.0 mm
‌Attenuation‌ Higher at high freq. Lower than RG-59 Lowest
‌Max Distance‌ ~250 meters (video) ~500 meters (video) ~600 meters (video)
‌Cost‌ Low Moderate High
‌6. Limitations‌
‌Frequency Limitations‌: Not ideal for frequencies above 1 GHz.
‌Signal Loss Over Distance‌: For runs exceeding 250 meters, consider thicker cables like RG-6 or RG-11.
‌Bend Radius‌: Avoid sharp bends to prevent damage to shielding layers.
‌7. Selection Tips‌
‌Environment‌: Use weatherproof jackets for outdoor installations.
‌Connectors‌: Ensure compatibility with BNC, F-type, or RCA connectors.
‌Certifications‌: Look for compliance with standards like ISO, UL, or CE.