Product introduction
| Product Introduction |
| SMA-KW female thread internal needle to SMA 90° male |
| Cable: RG316 blue cable RF cable |
| Interface Type: SMA |
| Cable length: 5cm~200cm (length can be customized) |
| RG316 blue cable RF cable parameter description | ||
| 1. Core parameters | ||
| parameter | Typical values | standard |
| characteristic impedance | 50Ω ± 2Ω | MIL-STD-348 impedance matched |
| Outside diameter | 2.6 mm (0.102in) | PTFE jacket included, compact design |
| Central conductor | 7×0.1mm tinned copper strand | AWG30 equivalent, resistant to bending fatigue |
| Insulation | Solid PTFE (Teflon) | Dielectric constant 2.1, high temperature/chemical resistance |
| shielding | Tinned copper braid (coverage ≥95%) | Single-layer braiding > 90dB shielding efficiency (1GHz) |
| Sheath material | FEP or PTFE | Flame retardant, resistant to 200°C high temperature |
| Speed of transmission | 69.5% speed of light (VF=0.695) | Latency 4.84 ns/m |
| Military code name | M17/74-RG316 | MIL-DTL-17 compliant |
| 2. Frequency and attenuation | |||
| frequency | Attenuation (dB/m) | Attenuation (dB/ft) | Application scenario risk warning |
| 100MHz | 0.15dB/m | 0.046dB/ft | 30% better than RG174 |
| 500MHz | 0.34dB/m | 0.104dB/ft | 4G/LTE mid-band |
| 1GHz | 0.48dB/m | 0.146dB/ft | Tipping point: Bluetooth/Wi-Fi |
| 2.4GHz | 0.75dB/m | 0.229dB/ft | Wi-Fi 2.4GHz main force |
| 3GHz | 0.84dB/m | 0.256dB/ft | 5G Sub-6GHz low frequency band |
| 5GHz | 1.10dB/m | 0.335dB/ft | Wi-Fi 5/6 key frequency bands |
| 6GHz | 1.25dB/m | 0.381dB/ft | Wi-Fi 6E limit |
| 10GHz | 1.85dB/m | 0.564dB/ft | Wear and tear have increased sharply, use it with caution! |
| 3. Electrical performance | ||
| parameter | Value | Test conditions |
| Maximum operating voltage | 1,900 V RMS (25°C) | Sea level, 25°C |
| Average power capacity | 100 W | Continuous wave |
| Peak power capacity | 2 kW | 3 μs pulse |
| capacitance | 29 pF/m | 1 kHz |
| 4. Mechanical and environmental characteristics | ||
| parameter | Value | Test conditions |
| Minimum bend radius | 25 mm (static) | Permanent deformation threshold |
| Dynamic bend radius | 50mm | Mobile applicable |
| Operating temperature range | -65℃~+200℃ | PTFE insulation/sheath limit |
| tensile strength | ≥70 N | IEC 61196 standard |
| Shielding efficiency | ≥ 90 dB (1 GHz) | MIL-STD-1344 Method 3007 |
| 5. Supplementary instructions |
| 5.1 Extreme temperature adaptability |
| -65°C~+200°C Full Temperature Range (Essential for Avionics/Engine Compartment Scenarios) |
| 5.2 Phase stability |
| Temperature drift of only ±0.2 ppm/°C (better than RG174's ±3 ppm/°C) |
| 5.3 Chemical resistance |
| PTFE insulation resists fuel/hydraulic fluid/solvent (MIL-STD-810G certified) |
| 5.4 High vibration reliability |
| Passed the 20~2000Hz sinusoidal vibration test (military equipment standard) |
| 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 | 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. 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 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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SMA-KW female thread inner needle to SMA 90° male head
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