Product introduction
| Product introduction |
| BNC male to SMB180° male |
| Wire: RG316/U micro coaxial cable |
| Interface type: BNC&SMB |
| Wire length: 5cm~200cm (length can be customized) |
| RG316/U micro coaxial cable parameter description | ||
| 1. Core parameters | ||
| Parameter | Typical value | Standard |
| Characteristic impedance | 50 Ω ±2Ω | Frequency range DC-6 GHz |
| Outside diameter | 2.59 mm (0.102 inches) | Ultra-flexoid fluoropolymer sheath, weighing only 10.5 g/m |
| Central conductor | Silver-plated copper-clad steel (SCS) | Diameter 0.30 mm (AWG 34), DC resistance 22.4 Ω/m |
| Insulating materials | Solid polytetrafluoroethylene (PTFE) | Loss angle tangent 0.0004 |
| Shielding layer | Double-layer shielding | 1 Silver-plated copper braided net (≥92% coverage) 2 Aluminum foil vertical package (100% coverage |
| Sheath | Ethylene fluoropropylene copolymer (FEP) | Temperature resistance -55°C ~ +200°C, flame retardant UL94 V-0 |
| Frequency range | DC ~ 6 GHz | Commonly used frequency band 0-3 GHz |
| Weaken | 100 MHz: 4.2 dB/30m 400 MHz: 8.2 dB/30m 1 GHz: 13.0 dB/30m 3 GHz: 23.5 dB/30m 6 GHz: 35.0 dB/30m | 25% lower than RG174 (@1GHz) |
| Voltage standing wave ratio | ≤ 1.35:1 (0-6 GHz) | Need to cooperate with SMA or MCX connector |
| Minimum bending radius | Static: 12.9 mm (5×OD) Dynamics: 25.8 mm (10×OD) | Bending life>5,000 times (90° bending) |
| Maximum pulling force | 45 N (short-term) / 15 N (long-term) | Installation tension limit |
| Working temperature | -55°C ~ +200°C | Instantaneous temperature resistance +260°C (5 minutes) |
| Propagation speed | 69.5% light speed | Delay 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 |
| Electric capacity | 28.5 pF/ft (93.5 pF/m) | Conform to the characteristics of 50Ω transmission line |
| 2. Description of key characteristics |
| Two 1. High-frequency performance advantages |
| PTFE insulation: high-temperature stability is better than that of PE materials, phase drift <0.5°/m @3GHz |
| Silver-plated internal conductor: reduce the loss of skin effect (15% lower than pure copper @3GHz) |
| Loss comparison (@3 GHz): RG174: 29.8 dB/30m |
| 2.2 Double shielding structure | ||
| Shielding layer | Function | Coverage rate |
| Inner aluminum foil | 100% high-frequency coverage | 100% |
| Outer copper net | Mechanical protection + low-frequency shielding | ≥92% |
| 3. Typical applicable scenarios | |||
| Scene | Recommended length | Connector scheme | Advantage |
| Test instrument jumper | 0.3~1m | SMA straight head/elbow head | Low reflection (VSWR<1.3) |
| UAV image transmission system | 0.5~2m | MMCX micro-joint | Lightweight (line weight 10.5g/m) |
| Medical monitoring equipment | 1~3m | MCX gold-plated connector | Biocompatible FEP sheath |
| On-board antenna feeder | 2~5m | SMB compress connector | Excellent vibration resistance |
| Selection guide | |||||
| 1. Commonly used adaptive cable specifications and characteristics | |||||
| Model | Outside diameter | Central conductor | 3GHz loss | Distinguishing feature | Applicable scenarios |
| RG-174 | 2.8mm | 7*0.16mm | 0.82dB/m | Flexible, easy to install, 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-foam PE line | 1.5~2.2mm | 0.3~0.5mm | 0.50dB/m | Low high-frequency loss | 5G/Wi-Fi |
| Semi-steel wire | 1.0~3.0mm | Solid copper | 0.30dB/m | Relatively stable and well shielded | Test calibration, millimeter wave front band |
| Selection guide | |||||
| 1. Commonly used adaptive cable specifications and characteristics | |||||
| Model | Outside diameter | Central conductor | 3GHz loss | Distinguishing feature | Applicable scenarios |
| RG-174 | 2.8mm | 7*0.16mm | 0.82dB/m | Flexible, easy to install, 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-foam PE line | 1.5~2.2mm | 0.3~0.5mm | 0.50dB/m | Low high-frequency loss | 5G/Wi-Fi |
| Semi-steel wire | 1.0~3.0mm | Solid copper | 0.30dB/m | Relatively stable and well shielded | Test calibration, millimeter wave front band |
| 2. Key parameter comparison and selection logic | ||||
| 2.1 Priority of electrical performance | ||||
| Parameter | RG-174 | RG-316 | Foamed PE line | Affect |
| 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 | Reflection signal suppression |
| 2.2 Mechanical and environmental adaptability | |||
| Parameter | RG-174 | RG-316 | Foamed PE line |
| Minimum bending radius | 15mm | 25mm | 30mm |
| Temperature tolerance range | -40℃~+85℃ | -65℃~+200℃ | -50℃~+85℃ |
| Tensile strength | Medium | Tall | Low (easy to damage) |
| 3. Typical application scenarios and cable matching |
| 3.1 Consumer electronic products (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 (such as Times LMR-200) |
| Reason: It needs to be resistant to plugging and low loss (high calibration accuracy requirements). |
| 3.3 On-board radar/5G small base station |
| Cable: PTFE insulated foam cable (such as Gore G-FLEX 150) |
| Reason: 6~24GHz low loss demand, outer diameter ≤2mm convenient for wiring. |
| 3.4 Military equipment |
| Cable: RG-316 (military standard MIL-DTL-17) |
| Reason: Resistant to extreme temperature and vibration, high shielding requirements. |
| 4. Supplementary explanation |
| 4.1 Outer diameter mismatch: MCX connectors usually support 1.0~3.0mm wire diameters, and need to be customized beyond the range (such as micro wires, special MCX heads are required). |
| 4.2 High-frequency loss: RG-174 is twice as high as foam PE wire at 6GHz, and long-distance transmission avoids use. |
| 4.3 Phase stability: For phase-sensitive applications (phased arrays), semi-rigid lines or phase-stable cables (such as Huber+Suhner S100) are preferred. |
| 4.4 Connector level: Gold-plated contact MCX (non-nickel-plated) is selected to ensure a life of >500 plugging and unplugging. |
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BNC male to SMB180° male
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