The HFL-081/50-S1 standard micro coaxial cable is an ultra-fine, precision 50 Ohm RF cable widely recognized as the industry benchmark for compact internal antenna wiring. Engineered with a slim 0.81mm outer diameter, this miniature coaxial wire utilizes a stranded silver-plated copper inner conductor (7/0.05mm) encased in high-purity Fluorinated Ethylene Propylene (FEP) insulation, ensuring superior electrical performance and low signal loss in tight enclosures.
Featuring a dense tinned copper braid shield, the HFL-081/50-S1 guarantees effective EMI protection while maintaining maximum physical flexibility. Ideal for Wi-Fi 6E/7 micro antennas, wearable IoT monitors, ultra-thin laptop displays, and handheld test equipment, HiFlexlink provides consistent batch-to-batch impedance matching (50 ± 3 Ohm). In addition to bulk coaxial cable supply, HiFlexlink manufactures custom factory-crimped micro RF jumper leads fitted with IPEX MHF4, Hirose W.FL, or custom solder terminals.
HFL-081/50-S1 Standard Micro Coaxial Cable (0.81mm OD)
Industry-standard 0.81mm RF micro coaxial cable featuring silver-plated inner conductor (7/0.05mm), FEP dielectric/jacket, and tinned copper braid. Widely used for IPEX/U.FL internal antenna jumper assemblies.
Industry-Standard 0.81mm Profile: The ultimate slim form factor designed for ultra-high density micro RF jumper assemblies.
Ultra-Fine 36 AWG Silver Conductor: Stranded silver-plated copper core (7/0.05mm) delivers exceptional signal flexibility and low insertion loss.
High-Density Braid Shielding: Tinned copper braid shield provides stable electromagnetic isolation in micro electronic enclosures.
Precision 50 Ohm Performance: Strict 50 ± 3 Ohm impedance control ensures excellent RF transmission for 0–6 GHz wireless bands.
Durable FEP Dielectric & Jacket: Heat-resistant fluoropolymer construction offers outstanding bend life and operational stability (-55℃ to +125℃).
MHF4 & W.FL Micro Terminal Match: Perfectly dimensioned for precision crimping with IPEX MHF4, MHF5, Hirose W.FL, and mini PCB pads
Technical Specifications & Construction
1. Product Construction & Parameters
| Structure Item | Material & Construction | Outer Diameter (OD) | Coverage / Color |
|---|---|---|---|
| ① Inner Conductor | Silver-plated copper wire (7/0.05 mm) | 0.15 ± 0.01 mm | – |
| ② Insulation | FEP | 0.42 ± 0.02 mm | Clarity |
| ③ Outer Conductor | Tinned copper wire braid | 0.62 ± 0.05 mm | 90 ± 5% Coverage |
| ④ Jacket | FEP | 0.81 ± 0.05 mm | Multiple Colors Available |
2. Electrical & Mechanical Characteristics
| Electrical Properties | |
|---|---|
| Impedance (@1ns) | 50 ± 2 Ω |
| Capacitance | 98 ± 4 pF/m |
| Velocity of Propagation | 70 ± 2 % |
| VSWR (0 ~ 6GHz) | ≤ 1.3 |
| Rating Voltage | 30 V |
| Attenuation (@ 20℃, dB/m) | |
|---|---|
| 1 GHz / 2 GHz | ≤ 3.60 / ≤ 5.10 dB/m |
| 3 GHz / 4 GHz | ≤ 6.20 / ≤ 7.50 dB/m |
| 5 GHz / 6 GHz | ≤ 8.50 / ≤ 9.40 dB/m |
Environmental & Packaging Specs
- Operating Temperature Range: -55℃ to +125℃
- Min. Static Bending Radius: 4 mm
- Standard Packaging: 1000 Meters/Reel
Key Features
- Standard 0.81mm Outer Diameter: Essential for passing through tiny hinge mechanisms and sub-millimeter routing slots.
- Precision Silver-Plated Core: 35–36 AWG equivalent stranded conductor (7/0.05mm) maximizes conductivity and flex-life.
- Tight Bending Radius (2.5mm): Outstanding mechanical flexibility allows sharp, kink-free wire bends inside micro devices.
- Wide Thermal Tolerance: Premium FEP dielectric and jacket withstand extreme temperatures from -55℃ to +125℃.
- Optimized Micro-Crimping: Uniform cable dimension guarantees high yield during automated crimping with MHF4 and W.FL connectors.
Target Applications
- Micro Wi-Fi 6E/7 & Bluetooth Antennas: Internal RF jumpers for smart watches, wireless earbuds, and IoT sensor tags.
- Ultra-Thin Laptops & Foldable Devices: Flexible antenna leads routed through tight hinge gaps in notebooks and tablets.
- Compact Drone & UAV Electronics: Lightweight video transmitter leads and telemetry links where every fraction of a gram counts.
- Handheld Medical & Test Gear: Micro diagnostic probes, portable signal analyzers, and compact wireless instrumentation.
- Custom Micro RF Jumper Assemblies: Pre-terminated lead-in cables fitted with IPEX MHF4, MHF5, Hirose W.FL, or tinned bare ends.
Frequently Asked Questions about HFL-081/50-S1
What makes HFL-081/50-S1 (0.81mm) different from 1.13mm micro coaxial cable?
HFL-081/50-S1 has a significantly smaller 0.81mm outer diameter, making it roughly 30% thinner than 1.13mm cable. It is specifically designed to fit 4th and 5th generation micro RF connectors (such as IPEX MHF4 and Hirose W.FL) that cannot accept thicker 1.13mm wire.
What connectors work best with the 0.81mm HFL-081/50-S1 cable?
The 0.81mm profile is the global standard size for IPEX MHF IV (MHF4), IPEX MHF5, Hirose W.FL series micro RF connectors, and direct micro PCB solder pads.
Does the silver-plated inner conductor improve performance in 0.81mm cable?
Yes. The 7/0.05mm silver-plated copper core lowers surface resistance and high-frequency skin-effect loss, ensuring clean signal transmission across 0–6 GHz wireless frequencies.
Can HiFlexlink customize pre-cut lengths and terminated jumpers for HFL-081/50-S1?
Absolutely. HiFlexlink provides full OEM/ODM assembly services, offering precision pre-cut lengths, stripping, automated soldering, and factory-tested connector crimping.
Need to Custom a RF Coaxial Cable
Requiring exact length RF jumpers or specialized micro connector termination? HiFlexlink offers end-to-end custom coax manufacturing: