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worldpeak-rg400-50-ohm-coaxial-cable-engineering-data--selection-guide, worldpeak-rg400-50-ohm-coaxial-cable-engineering-data--selection-guide, /rg-coaxial-cable
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Flexible Double-Shielded 50 Ohm Stranded SPCCS RF Coaxial Cable with High-Temperature PTFE Dielectric and Durable FEP Jacket for High-Vibration Avionics and Military Applications (-55°C to +200°C, >90 dB EMI Isolation).
The RG400 coaxial cable by Zhenjiang Worldpeak is a premium double shielded 50 ohm cable designed for high-vibration and high-temperature RF environments. Featuring a outer diameter of 4.95 mm, this heavy-duty high temperature PTFE cable utilizes a highly flexible stranded SPCCS coax core (7 x 0.32 mm silver-plated copper-clad steel) that delivers exceptional fatigue life and flexibility compared to solid-conductor alternatives. The double-braided silver-plated copper shielding of this RG400 coaxial cable ensures superior EMI isolation of over 90 dB. It is the optimal solution for commercial avionics, military vehicle electronics, and dynamic RF testing applications.
In modern aerospace and communication systems, selecting the right RF transmission line requires balancing electrical performance with physical durability. The Zhenjiang Worldpeak RG400 coaxial cable is engineered to meet this exact challenge. As a robust double shielded 50 ohm cable, it maintains strict signal integrity under extreme physical strain. Unlike standard solid-conductor cables that suffer from metal fatigue and cracking during continuous motion, the stranded SPCCS coax core inside this cable distributes bending stress across seven individual strands, allowing it to withstand repetitive mechanical cycles.
Additionally, this high-performance high temperature PTFE cable utilizes an extruded polytetrafluoroethylene (PTFE) dielectric. The combination of a PTFE core and a tough Fluorinated Ethylene Propylene (FEP) outer jacket enables the RG400 coaxial cable to function reliably in extreme environments ranging from -55°C to +200°C. For system engineers designing reliable interconnects, our standard or custom RG400 cable assemblies offer the perfect mix of high-frequency stability, physical endurance, and environmental resistance.
Extreme Flexibility & Dynamic Life: The stranded SPCCS coax inner conductor design offers up to five times the fatigue life of solid-conductor alternatives, surviving up to 50,000 bend cycles at a 25 mm radius.
Outstanding Shielding Effectiveness: Engineered with a high-density silver-plated copper double-shield construction, this double shielded 50 ohm cable delivers more than 90 dB of electromagnetic isolation.
Excellent Temperature Range: Operating as a certified high temperature PTFE cable, it maintains its electrical properties under harsh conditions from -55°C to +200°C.
Corrosion Resistant Platings: The silver-plated copper braids and stranded center conductor protect against oxidation and maintain a low contact resistance over decades of deployment.
Tough FEP Protective Jacket: The 4.95 mm extruded FEP jacket provides excellent resistance to oils, fuel, chemicals, and UV radiation, making the RG400 coaxial cable perfect for harsh outdoor or industrial environments.
Manufacturing a reliable stranded SPCCS coax requires precise quality control. Zhenjiang Worldpeak utilizes advanced engineering methods to guarantee consistent performance:
Uniform Silver Plating Control: To ensure uniform electrical performance and avoid contact resistance hotspots between individual conductor strands, Zhenjiang Worldpeak uses X-ray fluorescence testing to verify plating thickness on all incoming silver-plated copper-clad steel wires.
Avionics Grade Double Shielding: Most flexible fluorpolymer cables utilize single shielding, which limits overall isolation. This double shielded 50 ohm cable uses two overlapping silver-plated copper braids to block external EMI, making it ideal for high-density electronic bays.
Minimizing Mechanical Stress: The stranded construction of this RG400 coaxial cable ensures that bending forces do not concentrate at a single point. This prevents micro-cracking and maintains stable signal attenuation even after thousands of dynamic flex cycles.
| Parameter | Specification (Level A/B)* | Engineering Tolerance & Notes |
| Inner Conductor | 7 x 0.32 mm Stranded SPCCS | Level A - Stranded silver-plated copper-clad steel |
| Dielectric Material | 2.95 mm Extruded Solid PTFE | Level A - High-temperature rated (±0.05 mm) |
| Primary Inner Shield | Silver-Plated Copper Braid (>=95%) | Level A - Dense shielding coverage |
| Secondary Outer Shield | Silver-Plated Copper Braid (>=90%) | Level A - Secondary high-frequency isolation |
| Outer Cable Jacket | 4.95 mm Translucent Natural FEP | Level A - Chemical and UV resistant (±0.10 mm) |
| Nominal Impedance | 50 Ohms | Level A - Real-time monitored (±2 Ω) |
| Shielding Effectiveness | >90 dB | Level B - Double-shield architecture |
| Velocity of Propagation | 70% | Level B - Typical industry value |
| Nominal Capacitance | 95 pF/m | Level B - Nominal capacitance value |
| Operating Temperature | -55°C to +200°C | Level B - PTFE/FEP dynamic thermal range |
| Quality Certifications | CE, RoHS, FCC, UL94, ISO9001 | Level A - Certified factory standards |
*Level A: Factory Verified; Level B: Typical Industry Value.
Commercial and Military Avionics: Ideal for flexible wiring harnesses in aircraft that face continuous engine vibrations and extreme high-altitude temperature drops.
Defense Vehicular Electronics: Used to build rugged RF links in tracked or wheeled military vehicle communication bays.
Environmental Test Chambers: Perfect for test fixtures inside HALT/HASS chambers where the RG400 coaxial cable undergoes constant multi-axis shaking.
Mobile Communication Infrastructure: Excellent for deployable military or commercial communication shelters that are frequently packaged, shipped, and reassembled.
Choosing Zhenjiang Worldpeak as your direct manufacturer offers multiple strategic advantages for your supply chain:
Certified Global Compliance: Every batch of our double shielded 50 ohm cable is produced in an ISO9001 facility and complies with global CE, RoHS, FCC, and UL94 standards.
Custom OEM Cable Assembly: Zhenjiang Worldpeak designs and manufactures customized RG400 cable assemblies complete with factory-installed SMA, N-Type, TNC, or BNC connectors to fit your exact project specifications.
Optimized Logistics: To protect this highly flexible high temperature PTFE cable, all shipments are packed on sturdy, commercial-grade spools designed to prevent kinking during transit.
Q: Can your RG400 coaxial cable directly replace RG142?
A: Yes, electrically they are identical. Both are 50-ohm, double-shielded, and rated up to +200°C. However, because the stranded SPCCS coax core in the RG400 is larger in overall cross-section than the solid core of the RG142, you must use crimp connectors specifically sized for stranded conductors. Zhenjiang Worldpeak can assist you in selecting the correct connectors or provide ready-made RG400 cable assemblies.
Q: Why choose a double shielded 50 ohm cable over a single-shield version?
A: A double-shielded construction increases EMI protection to over 90 dB (compared to around 60 dB for single-shield). This is critical in co-located RF systems, like avionics bay racks, where neighboring cables can cause signal crosstalk.
Q: Does Zhenjiang Worldpeak offer customized jacket colors for this high temperature PTFE cable?
A: Our standard jacket color is translucent natural. However, for large volume wholesale orders, Zhenjiang Worldpeak can manufacture FEP jackets in custom colors including blue, white, or black.
