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worldpeak-rg178-50-ohm-coaxial-cable-engineering-data--selection-guide, worldpeak-rg178-50-ohm-coaxial-cable-engineering-data--selection-guide, /rg-coaxial-cable
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Ultra-compact, high-temperature RG178 50 Ohm coaxial cable certified by ISO9001, CE, and RoHS. Engineered by Zhenjiang Worldpeak with a >90% silver-plated shield and precise ±2 Ω matching, this flexible 1.80 mm cable saves 85% volume for aerospace, medical probes, and phased array antennas operating from -55°C to +200°C.
The RG178 coaxial cable from Zhenjiang Worldpeak Communication Co., Ltd. is a premium-grade, ultra-compact micro coaxial cable engineered specifically for high-density RF routing. Featuring an outer diameter of just 1.80 mm, this highly reliable 50 Ohm coaxial cable integrates a silver-plated copper-clad steel (SPCCS) conductor and an extruded PTFE dielectric core. It delivers outstanding electrical stability from DC up to 3 GHz under temperatures ranging from -55°C to +200°C. Engineered as a robust high temperature RF cable, it provides a space-saving alternative for aerospace, medical devices, and telecom systems where every millimeter matters.
Zhenjiang Worldpeak Communication Co., Ltd. manufactures the RG178 coaxial cable to address the strict spatial and thermal demands of modern compact RF designs. This sub-miniature 50 Ohm coaxial cable offers the perfect compromise between a miniature footprint and consistent RF performance. Its 1.80 mm outer diameter is roughly half the cross-section of standard RG174, saving up to 85% of volumetric space in complex wire routing paths.
Constructed with a stranded 7 x 0.10 mm SPCCS inner conductor, a high-purity extruded PTFE dielectric, and a high-coverage silver-plated copper shield braid, this micro coaxial cable prevents signal leakage and resists electromagnetic interference. The assembly is wrapped in a durable, translucent FEP outer jacket, making this high temperature RF cable resistant to chemical exposure, physical abrasion, and extreme temperatures. It is a highly specialized, surgical RF interconnect tool designed for short signal paths where space is highly constrained.
Extreme Space Efficiency: The 1.80 mm outer diameter of this micro coaxial cable allows routing through tight hinges, gimbals, and ultra-miniature board connectors.
Excellent Thermal Endurance: Built as a high-performance high temperature RF cable, the PTFE and FEP materials ensure stable performance from -55°C to +200°C.
Precise Impedance Matching: Real-time monitoring guarantees a steady 50 ± 2 Ω impedance across this 50 Ohm coaxial cable to minimize signal reflection.
Direct-Solder Compatibility: The thermal properties of this high-quality RG178 coaxial cable allow direct soldering onto PCB pads without risk of dielectric meltback.
| Parameter | Specification (Level A/B)* | Engineering Tolerance & Notes |
| Primary Cable Model | RG178 coaxial cable | Industry-standard micro-miniature RF line |
| Inner Conductor | 7 x 0.10 mm Stranded SPCCS | Level A - Factory Verified for high conductivity |
| Dielectric Core | 1.30 mm (±0.03 mm) Extruded PTFE | Level A - High-density insulation |
| Shielding Layer | 1.60 mm Silver-Plated Copper Braid | Level A - Single shield, >=90% optical coverage |
| Outer Jacket | 1.80 mm (±0.10 mm) Extruded FEP | Level A - Translucent natural color standard |
| Impedance Rating | 50 ± 2 Ω | Level A - Monitored for optimal 50 Ohm coaxial cable matching |
| Velocity of Propagation | 70% (Typical) | Level B - Industry standard value |
| Nominal Capacitance | 95 pF/m (Nominal) | Level B - Low capacitance micro coaxial cable design |
| Attenuation @ 400 MHz | Approx. 1.3 dB/m | Level B - Standard transmission loss data |
| Attenuation @ 1 GHz | Approx. 2.5 dB/m | Level B - Attenuation profile for this high temperature RF cable |
| Attenuation @ 3 GHz | Approx. 4.5 dB/m | Level B - High-frequency performance limits |
| Minimum Bend Radius | Approx. 9 mm (Static) | Level B - Safe physical bending limit (5 x OD) |
| Compliance Standards | CE, RoHS, FCC, UL94, ISO9001 | Level A - Quality certified by Zhenjiang Worldpeak |
*Level A: Factory Verified; Level B: Typical Industry Value.
Producing a high-quality RG178 coaxial cable requires advanced machinery and strict quality control. At these sub-miniature scales, any eccentricity in the PTFE dielectric will degrade the impedance of the 50 Ohm coaxial cable. Zhenjiang Worldpeak Communication Co., Ltd. uses a closed-loop laser micrometer array during the extrusion process to keep the dielectric centering tolerance within ±0.03 mm.
Additionally, the individual 0.10 mm strands of this micro coaxial cable are highly delicate. To prevent stretching during manufacturing, Worldpeak utilizes tension-controlled payoff systems. This low-tension handling avoids conductor distortion, ensuring that the high temperature RF cable maintains its electrical integrity during high-frequency operation.
Phased Array Antennas: High-density RF routing within multi-element antenna systems, utilizing parallel RG178 coaxial cable assemblies.
Aerospace Instrumentation: Flight-test telemetry wiring requiring a lightweight, compact high temperature RF cable that resists thermal extremes.
Medical Ultrasound Probes: Flexible, space-saving micro coaxial cable assemblies inside catheter probes and medical imaging devices.
Smallsat Interconnects: Lightweight internal routing for satellites, where the weight and volume of this 50 Ohm coaxial cable are critical constraints.
By purchasing your RG178 coaxial cable from Zhenjiang Worldpeak Communication Co., Ltd., you benefit from an ISO9001-certified supply chain. Worldpeak provides a Certificate of Conformance (CoC) with every order. To lower your production labor costs, Worldpeak offers pre-terminated 50 Ohm coaxial cable jumpers fitted with custom SMA, SSMA, or MMCX connectors. Worldpeak supports custom FEP jacket colors and flexible packaging options to suit both prototype testing and large-scale manufacturing.
Q: What is the recommended maximum path length for this 50 Ohm coaxial cable at 2.4 GHz?
A: At 2.4 GHz, the attenuation of the RG178 coaxial cable is roughly 3.5 dB/m. To preserve signal power, Worldpeak recommends keeping runs under 200 mm and utilizing this micro coaxial cable for short jumpers.
Q: Can this micro coaxial cable undergo automated automated cutting and stripping?
A: Yes. Since the inner strands are extremely thin, Worldpeak advises using laser stripping or highly precise mechanical stripping blades to protect the PTFE dielectric of this high temperature RF cable.
Q: Is this RG178 coaxial cable available in custom colors?
A: Worldpeak offers colored FEP jackets (black, blue, red, yellow) for bulk volume orders. For smaller quantities, Worldpeak recommends applying colored heat-shrink labels to the cable ends.
