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worldpeak-rg405-50-ohm-coaxial-cable-engineering-data--selection-guide, worldpeak-rg405-50-ohm-coaxial-cable-engineering-data--selection-guide, /rg-coaxial-cable
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Premium 085 semi-rigid 50 Ohm coaxial cable with seamless copper shielding (>120 dB) and extruded PTFE dielectric, delivering unmatched phase stability and low VSWR from DC up to 50 GHz for aerospace, radar, and precision RF testing.
The RG405 coaxial cable by Zhenjiang Worldpeak is a premier 085 semi rigid cable engineered for high-precision microwave assemblies and millimeter-wave communication channels. Designed with a solid copper tube outer conductor, this high-performance 50 ohm semi rigid coaxial cable ensures zero signal leakage and near-perfect RF shielding performance exceeding 120 dB. Built with a 0.51 mm solid SPCCS core and a 1.68 mm high-temperature extruded PTFE dielectric, this RG405 semi rigid cable offers ultimate phase stability from DC up to 50 GHz. It is the absolute standard for aerospace payloads, defense systems, and network analyzer setups.
In critical microwave systems, maintaining absolute phase and amplitude stability under severe operational conditions is essential. The Zhenjiang Worldpeak RG405 coaxial cable satisfies these stringent requirements by replacing flexible braided shield constructions with a seamless, solid copper tube outer conductor. This drawn copper shell provides an exceptional physical and electrical boundary, eliminating internal reflections and high-frequency energy leakage.
As a true 085 semi rigid cable, it provides an incredibly tight impedance window of 50 ± 1 Ohm. Unlike flexible braided cables that exhibit phase variance under movement, this 50 ohm semi rigid coaxial cable establishes an invariant electrical path. This stable behavior makes the RG405 semi rigid cable an indispensable component for dense internal RF routing inside hermetically sealed sub-assemblies, satellite transponder payloads, and multi-channel radar systems where reliable alignment must be maintained throughout its entire service life.
Near-Perfect Shielding Performance: The seamless copper tube outer conductor provides greater than 120 dB of isolation, eliminating crosstalk in high-density electronic environments.
Ultra-Tight Impedance Control: Engineered to a strict tolerance of 50 ± 1 Ohm, this RG405 semi rigid cable delivers excellent return loss and voltage standing wave ratio (VSWR) metrics.
Extended Frequency Profile: Operates smoothly across an ultra-wide spectrum from DC up to 50 GHz, accommodating next-generation millimeter-wave installations.
Outstanding Thermal and Structural Stability: The solid PTFE dielectric combined with the copper outer tube enables reliable performance across a -55°C to +125°C temperature range.
Unrivaled Phase Consistency: Perfect for phase-matched arrays, where this high-grade 50 ohm semi rigid coaxial cable keeps electrical lengths consistent across variable conditions.
Producing high-grade 085 semi rigid cable demands precision manufacturing controls to prevent micro-fissures and attenuation spikes:
Seamless Tube Processing: Rather than using welded sheets, Zhenjiang Worldpeak uses a seamless drawing method to build the outer copper tube. This removes structural seams that create impedance discontinuities at millimeter-wave frequencies. Tube concentricity is verified using advanced air-gauge measurements to prevent any eccentricity above 0.02 mm.
Calibrated Mandrel and CNC Bending: This rigid RG405 semi rigid cable cannot be shaped by hand. Zhenjiang Worldpeak utilizes mechanical mandrels and precise automated CNC tube-bending systems to shape assemblies per your exact drawings. Our processes guarantee angular repeatabilities within ±1 degree without kinking the outer copper shield.
Thermal Expansion Compensation: For long cable spans exposed to temperature changes, the differences in thermal coefficients must be managed. Zhenjiang Worldpeak engineers can incorporate precise service loops into custom RG405 cable assemblies to handle mechanical stress and protect delicate solder connections at the connector interfaces.
| Parameter | Specification (Level A/B)* | Engineering Tolerance & Notes |
| Inner Conductor | Solid SPCCS, 0.51 mm | Level A - Silver-plated copper-clad steel (±0.01 mm) |
| Dielectric Material | 1.68 mm Extruded PTFE | Level A - High-temperature core matrix (±0.03 mm) |
| Outer Conductor | Solid Copper Tube, 2.20 mm OD | Level A - Seamless drawn shield tube |
| Nominal Impedance | 50 Ohms | Level A - Strict monitored tolerance (±1 Ω) |
| Shielding Effectiveness | >120 dB | Level B - Near-infinite microwave isolation |
| Velocity of Propagation | 70% | Level B - Typical industry standard value |
| Nominal Capacitance | 95 pF/m | Level B - Nominal capacitance value |
| Frequency Spectrum | DC to 50 GHz | Level B - Connector-dependent above 26 GHz |
| Minimum Bend Radius | 2.0 mm | Level B - Requires specialized mandrel tooling |
| Operating Temperature | -55°C to +125°C | Level B - Copper tube operational range |
| Quality Certifications | CE, RoHS, FCC, UL94, ISO9001 | Level A - Certified factory credentials |
*Level A: Factory Verified; Level B: Typical Industry Value.
Network Analyzer Calibration Standards: Used inside precision RF test kits where phase and amplitude metrics must remain perfectly stable over years of operation.
Satellite Transponder Payload Units: Ideal for internal routing in space-qualified payloads, surviving harsh launch forces while maintaining electrical alignment.
Hermetic Microwave Sub-Assemblies: Serves as the primary fixed connection between filters, power amplifiers, and mixers inside sealed microwave modules.
Coherent Radar Exciter Networks: Provides phase-critical connections in advanced radar platforms, ensuring matching across varying temperatures.
Sourcing your bulk RG405 semi rigid cable from Zhenjiang Worldpeak delivers important supply chain and commercial benefits:
Global Regulatory Compliance: Every manufacturing run complies with strict ISO9001 management protocols and possesses full CE, RoHS, FCC, and UL94 testing compliance.
Pre-Formed Custom RF Assemblies: Zhenjiang Worldpeak offers extensive OEM termination services. We build complete, ready-to-install RG405 cable assemblies with SMA, 2.92mm (K), 3.5mm, or SSMA connectors based on your 2D or 3D routing designs.
Protective Rigid Packaging: To protect the custom geometry of this 50 ohm semi rigid coaxial cable, Zhenjiang Worldpeak packs finished assemblies in rigid, form-fitting containers. Each component is serialized and shipped with its performance test records.
Q: Can this RG405 semi rigid cable be bent by hand during system assembly?
A: No, attempting to hand-bend this 085 semi rigid cable will cause the outer copper tube to kink. This permanently alters the internal geometry, causing severe reflection loss. All bends must be formed using precision mandrels. For applications needing hand-formable routing, consider the semi-flexible alternative from Zhenjiang Worldpeak.
Q: What is the primary operational difference between .085-inch and .141-inch lines?
A: The RG405 semi rigid cable (.085-inch) has a smaller 2.20 mm outer diameter, making it the industry favorite for compact microwave housings with tight spatial constraints. The larger .141-inch equivalent offers lower signal attenuation but requires more internal routing volume.
Q: Does Zhenjiang Worldpeak test these pre-formed assemblies prior to shipment?
A: Yes, every pre-terminated assembly built by Zhenjiang Worldpeak undergoes rigorous electrical screening, including VSWR and insertion loss testing. We provide Certificates of Conformance and full test data profiles with each shipment.
