Product introduction
| Product Introduction |
| SMA-K180° female to 1st generation terminal MHF1 |
| Wire: RG178 RF coaxial cable |
| Interface Type: SMA&MHF1 |
| Cable length: 5cm~200cm (length can be customized) |
| RG178 RF coaxial cable parameter description | ||
| 1. Core parameters | ||
| parameter | Typical values | standard |
| characteristic impedance | 50 Ω | Standard RF systems match the impedance |
| Outside diameter | 1.8mm±0.10mm | Ultra-fine design for compact spaces |
| Central conductor | 7×0.06mm silver-plated copper-clad steel | High flexibility, silver plating layer improves high-frequency conductivity |
| Insulation | Solid Teflon (PTFE) | Loss tangent 0.0004 |
| shielding | Double shielding | (1) Silver-plated copper woven mesh (≥92% coverage) (2) Aluminum foil longitudinal wrap (100% covered.) |
| jacket | Fluorinated ethylene propylene copolymer (FEP). | Temperature resistance -55°C ~ +200°C, flame retardant UL94 V-0 |
| Frequency range | DC ~ 6 GHz | Common frequency bands 0-3 GHz |
| attenuation | 100 MHz:2.0 dB/100m 1 GHz:6.2 dB/100m 3 GHz:11.8 dB/100m 5 GHz:16.4dB/100m 10 GHz:26.0 dB/100m | 25% lower than RG174 (@1GHz) |
| Voltage VSWR | ≤ 1.35:1 (0-6 GHz) | Requires SMA or MCX connectors |
| Minimum bend radius | Static: 5 mm (5×OD) Dynamic: 10 mm (10×OD). | High flexibility for repeated bending |
| Maximum pulling force | 45 N (short-term) / 15 N (long-term) | Mounting tension limit |
| Operating temperature | -55°C ~ +200°C | Instantaneous temperature resistance +260°C (5 minutes) |
| Speed of transmission | 69% speed of light | Latency 4.8 ns/m |
| Shielding efficiency | ≥ 85 dB (1 GHz) | Meet MIL-STD-461F RE102 |
| Voltage level | 1,000 Vrms (peak) | Insulation withstand voltage ≥3 kV DC |
| capacitance | 29.5 pF/ft (96.8 pF/m) | It conforms to the 50Ω transmission line characteristics |
| 2. Typical applicable scenarios |
| High-frequency test instruments (oscilloscope probes, spectrometer cables) |
| Drone / Robot (Lightweight Image Transmission Signal Line) |
| Medical equipment (endoscopes, high-frequency wires inside monitors) |
| Military/Aerospace Electronics (Airborne Equipment, Satellite Communication Modules) |
| Miniature RF Connectors (SMA, MCX, IPEX Interface Patch Cords) |
| Selection guide | |||||
| 1. Specifications and characteristics of commonly adapted cables | |||||
| Model | Outside diameter | Central conductor | 3GHz loss | peculiarity | Applicable scenarios |
| RG-174 | 2.8mm | 7*0.16mm | 0.82dB/m | Flexible, easy to install, and low cost | Consumer electronics |
| RG-316 | 2.6mm | 7*0.1mm | 0.84dB/m | High temperature resistance, military industry standards | High temperature environment, test instruments |
| Micro foamed PE wire | 1.5~2.2mm | 0.3~0.5mm | 0.50dB/m | High frequency loss is low | 5G/Wi-Fi |
| Semi-steel wire | 1.0~3.0mm | Solid copper | 0.30dB/m | Relatively stable and good shielding | Test calibration, mmWave front |
| 2. Comparison of key parameters and selection logic | ||||
| 2.1 Electrical performance priority | ||||
| parameter | RG-174 | RG-316 | Foamed PE wire | effect |
| Attenuation @6GHz | 1.8dBm/m | 1.7dBm/m | 0.9dBm/m | High-frequency signal integrity |
| Shielding efficiency | 70dB | 90dB | >90dB | Anti-interference ability |
| Impedance stability | ±3Ω | ±2Ω | ±1Ω | Reflected signal suppression |
| 2.2 Mechanical and environmental adaptability | |||
| parameter | RG-174 | RG-316 | Foamed PE wire |
| Minimum bend radius | 15mm | 25mm | 30mm |
| Temperature range | -40℃~+85℃ | -65℃~+200℃ | -50℃~+85℃ |
| tensile strength | medium | Tall | Low (easily damaged) |
| 3. Typical application scenarios are matched with cables |
| 3.1 Consumer Electronics (Bluetooth/Wi-Fi) |
| Cable: RG-174 |
| Reason: Cost sensitive, frequency ≤ 5GHz, short length (<0.3m) and controllable loss. |
| 3.2 Test Instrument Jumper (Vector Network Analyzer) |
| Cable: RG-316 or low-loss foam cable (e.g. Times LMR-200) |
| Reason: It needs to be resistant to mating and unplugging, low loss (high calibration accuracy requirements). |
| 3.3 Vehicle radar/5G small cell station |
| Cable: PTFE insulated foam wire (e.g. Gore G-FLEX 150) |
| Reason: 6~24GHz low loss requirements, outer diameter ≤2mm for easy wiring. |
| 3.4 Military equipment |
| Cable: RG-316 (Mi-Label MIL-DTL-17) |
| Reason: Resistant to extreme temperatures, vibrations, and high shielding requirements. |
| 4. Supplementary instructions |
4.1 Outer diameter mismatch: MCX connectors usually support 1.0~3.0mm wire diameter, and customization is required beyond the range (such as micro wires require a dedicated MCX head). |
4.2 High frequency loss: RG-174 has 2 times higher loss than foamed PE wire at 6GHz, and is avoided for long-distance transmission. |
4.3 Phase stability: For phase-sensitive applications (phased arrays), prefer semi-rigid wires or phase-stabilized cables (e.g., Huber+Suhner S100). |
| 4.4 Connector Grade: Gold-plated contacts MCX (non-nickel plated) are selected to ensure a > of 500 mating and unmating life. |
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SMA-K180° female head to 1st generation terminal MHF1
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