PS540L-25G-F Low Loss Phase Stable Coaxial Cable | Solid Conductor
Low Loss Phase Stable RF Coaxial Cable (Up to 25 GHz)
Designed for high-frequency measurement, defense systems, and thermal-demanding environments up to 25 GHz. Features a solid silver-plated copper conductor, LD-PTFE dielectric, and high-temp Fluorinated Ethylene Propylene (FEP) outer 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 | 1 / 1.45 mm (Solid, Nom. O.D. 1.45 mm) |
| Insulation | Dielectric Material | LD-PTFE (Low Density PTFE) | Nom. O.D. 4.30 mm |
| Inner Shield | Wrapping Layer | Flat Silver Plated Copper Wrapped Strip | Nom. O.D. 4.50 mm |
| Outer Shield | Braid Layer | Round Silver Plated Copper Braided Wire | Nom. O.D. 4.95 mm |
| Jacket | Outer Protective Layer | Aqua FEP | Nom. O.D. 5.40 mm |
Mechanical & Environmental Parameters
| Min. Bending Radius (Static) | 25.00 mm | Weight | 0.076 kg/m |
| Min. Bending Radius (Dynamic) | 50.00 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 PS540L-25G-F is engineered as a direct replacement for high-frequency coaxial assemblies such as UFA210A.
Frequently Asked Questions
What is the structural distinction of PS540L-25G-F compared to stranded variants?
PS540L-25G-F features a 1/1.45mm solid silver-plated copper inner conductor, offering superior structural uniformity and lower attenuation at high frequencies compared to multi-strand options.
What thermal protection does the FEP jacket provide?
The Fluorinated Ethylene Propylene (FEP) outer jacket ensures exceptional chemical resistance and extended thermal stability across a broad operating temperature range of -55℃ to +165℃.
How does double shielding impact signal leakage in 25 GHz applications?
The combination of a flat silver-plated copper tape inner shield and braided outer shield provides screening effectiveness exceeding 90 dB, preventing EMI/RFI interference.
