PS540LS-25G-F Low Loss Phase Stable Coaxial Cable | Up to 25GHz
Low Loss Phase Stable RF Coaxial Cable (Up to 25 GHz)
Designed for high-frequency measurement, aerospace, and defense applications up to 25 GHz, the PS540LS-25G-F combines exceptional phase stability with broad operating temperature resistance (-55℃ to +165℃) provided by its high-grade Aqua FEP jacket.
Max Frequency:DC-25GHz
Velocity of Prop.：77%
Phase Stability ：±0.2 °/GHz
Outer Diameter:5.4mm
Structure & Construction Characteristics
| Structure Layer | Item | Material | Construction / Dimension |
|---|---|---|---|
| Inner Conductor | Material & Stranding | Silver Plated Copper | 19 / 0.29 mm (Nom. O.D. 1.45 mm) |
| Insulation | Dielectric Material | LD-PTFE (Low Density PTFE) | Nom. O.D. 4.25 mm |
| Inner Shield | Wrapping Layer | Flat Silver Plated Copper Wrapped Strip | Nom. O.D. 4.45 mm |
| Outer Shield | Braid Layer | Round Silver Plated Copper Braided Wire | Nom. O.D. 4.90 mm |
| Jacket | Outer Protective Layer | Aqua FEP | Nom. O.D. 5.40 mm |
Mechanical & Environmental Parameters
| Min. Bending Radius (Static) | 21.60 mm | Weight | 0.072 kg/m |
| Min. Bending Radius (Dynamic) | 43.20 mm | Operating Temperature | -55 to +165 ℃ |
Electrical & Mechanical Characteristics
| Impedance | 50 Ohm | Max Operating Frequency | 25 GHz |
| Capacitance | 87 pF/m | Screening Effectiveness | > 90 dB |
| Velocity of Propagation | 77% | Dielectric Withstanding Voltage | 2500 V @ DC |
| Phase Change vs. Bending | ±0.2 °/GHz | Phase Change vs. Temp (-45~+85℃) | ≤ 1500 PPM |
Attenuation & Power Handling @ 25℃ & Sea Level
Attenuation Formula: IL = K1 * sqrt(F_MHz) + K2 * F_MHz
Constants: K1 = 0.795435 | K2 = 0.001179
| Frequency (MHz) | Nominal Attenuation (dB/100m) | Max Power Handling (W) |
|---|---|---|
| 500 | 18.38 | 1435 |
| 1000 | 26.33 | 1001 |
| 2400 | 41.80 | 631 |
| 3000 | 47.11 | 560 |
| 6000 | 68.69 | 384 |
| 8000 | 80.58 | 327 |
| 10000 | 91.34 | 289 |
| 12400 | 103.20 | 256 |
| 15000 | 115.11 | 229 |
| 18000 | 127.95 | 206 |
| 20000 | 136.08 | 194 |
Replaceable / Cross Reference Equivalents
The PS540LS-25G-F serves as an exact high-performance equivalent to industry-standard high-frequency assemblies such as UFA210B.
Frequently Asked Questions
What makes PS540LS-25G-F suitable for high-temperature environments?
Featuring a Fluorinated Ethylene Propylene (FEP) outer jacket, the PS540LS-25G-F safely operates across a wide temperature range from -55℃ to +165℃ without thermal degradation.
How does the cable construction ensure low insertion loss up to 25 GHz?
By utilizing a low-density PTFE (LD-PTFE) dielectric with 77% velocity of propagation combined with a silver-plated flat copper strip inner shield, signal attenuation is minimized at high frequencies.
What is the minimum bending radius for static vs dynamic installations?
The cable supports a minimum static bending radius of 21.60 mm and a dynamic bending radius of 43.20 mm, ensuring reliable mechanical performance during flexure.
