SM 250 CABLE
SM 250 Cable is a reliable RF cable designed for efficient signal transmission in demanding telecommunications, wireless communication, and electronic applications. Its robust construction supports stable electrical performance, low signal attenuation, and excellent signal integrity across RF systems. The cable is suitable for RF test and measurement equipment, antenna systems, wireless networks, laboratory instruments, aerospace, defense, and telecom infrastructure. Its flexible design allows convenient routing and installation in compact or complex equipment configurations. SM 250 Cable provides dependable connectivity and consistent performance, making it a practical solution for professional RF systems requiring reliable signal transmission and durability.
Construction
| Item | Material | Diameter |
|---|---|---|
| Inner Conductor | Solid Silver Plated | 1.67 mm |
| Dielectric | PTFE | 5.24 mm |
| Outer Conductor | Copper, Tin plated | 6.3 mm |
| Outer Conductor | Copper, Tin plated | 6.3 mm |
Electrical Specification
| Suitable Frequency | Up to 18 GHz |
| Impedance | 50 Ω |
| Capacitance | 95 pF/m |
| Velocity of Signal Propagation | 71% |
| Signal Delay | 4.7 ns/m |
| Insulation Resistance | ≥ 1 × 108 MΩm |
| Min. Screening Effectiveness | > 100 dB (up to 18 GHz) |
| Max. Operating Voltage | 3.5 kVrms (at sea level) |
| Test Voltage | 7.5 kVrms (50 Hz/1 min) |
| Weight | 13.8 kg/100 m |
| Min. Bending Radius (Static) | 30 mm |
| Min. Bending Radius (Repeated) | 120 mm |
| Temperature Range | -65 °C ~ +165 °C |
| RoHS | Compliant |
Attenuation and Power
| Freq. (MHz) | dB/100m |
Average Power (Watt) |
|---|---|---|
| 0.9 | 0.23 | 0.070 |
| 1.8 | 0.34 | 0.104 |
| 2.7 | 0.43 | 0.131 |
| 3.6 | 0.51 | 0.155 |
| 4.5 | 0.58 | 0.177 |
| 5.4 | 0.66 | 0.201 |
| 6.3 | 0.72 | 0.219 |
| 7.2 | 0.79 | 0.241 |
| 8.1 | 0.85 | 0.259 |
| 9.0 | 0.91 | 0.277 |
| 9.9 | 0.97 | 0.296 |
| 10.8 | 1.02 | 0.311 |
| 11.7 | 1.08 | 0.329 |
| 12.6 | 1.14 | 0.347 |
| 13.5 | 1.19 | 0.363 |
| 14.4 | 1.24 | 0.378 |
| 15.3 | 1.30 | 0.396 |
| 16.2 | 1.35 | 0.411 |
| 17.1 | 1.40 | 0.427 |
| 18.0 | 1.45 | 0.442 |