PSE560LS-25G-F
Stranded Conductor High Frequency Low Loss Phase Stable Coaxial Cable
Engineered for high-frequency microwave applications operating up to 25 GHz. Incorporating a stranded silver-plated copper inner conductor (19/0.29mm) for enhanced mechanical flexibility, Low-Density PTFE (LD-PTFE) dielectric, and high-density double shielding, PSE560LS-25G-F delivers ultra-low insertion loss, excellent flexural durability, and superior phase stability vs bending.
Max Frequency:DC-25GHz
Velocity of Prop.：76%
Inner ConductorStranded SPC (19/0.29mm)
Outer Diameter:5.6mm
Structure & Construction Characteristics
| Structure Layer | Material Description | Construction Details | Nom. O.D. (mm) |
|---|---|---|---|
| Inner Conductor | Silver Plated Copper (Stranded) | 19 / 0.29 mm | 1.45 |
| Insulation Dielectric | LD-PTFE (Low-Density PTFE) | — | 4.25 |
| Inner Shield | Silver Plated Copper Strip Tape | — | 4.45 |
| Interlayer | LD-PTFE Tape | — | 4.75 |
| Outer Shield | Silver Plated Copper Wire Braid | — | 5.15 |
| Outer Jacket | Blue FEP (Fluorinated Ethylene Propylene) | — | 5.60 |
Electrical & Mechanical Characteristics
| Electrical Parameter | Standard Value | Mechanical & Environmental | Standard Value |
|---|---|---|---|
| Impedance | 50 Ohm | Min. Static Bend Radius | 24.00 mm |
| Capacitance | 88 pF/m | Min. Dynamic Bend Radius | 48.00 mm |
| Velocity of Propagation | 76% | Nominal Weight | 0.072 kg/m |
| Max Operating Frequency | 25 GHz | Operating Temperature Range | -55°C to +85°C |
| Screening Effectiveness | > 90 dB | Phase Change VS Bending | ±0.3 °/GHz |
| Dielectric Withstanding Voltage | 2000 V DC | Phase Change VS Temp (-45~+85℃) | ≤ 1500 PPM |
Attenuation & Power Handling @ 25℃ & Sea Level
Insertion Loss Calculation Formula: IL = K1 * sqrt(F_MHz) + K2 * F_MHz (dB/100m)
Constants: K1 = 0.880600, K2 = 0.000900
| Frequency (MHz) | Nom. Attenuation (@25℃ & Sea Level) [dB/100m] | Max. Power Handling (@40℃ & Sea Level) [W] |
|---|---|---|
| 500 | 20.14 | 1046 |
| 1000 | 28.75 | 733 |
| 2400 | 45.30 | 465 |
| 3000 | 50.93 | 414 |
| 6000 | 73.61 | 286 |
| 8000 | 85.96 | 245 |
| 10000 | 97.06 | 217 |
| 12400 | 109.22 | 193 |
| 15000 | 121.35 | 174 |
| 18000 | 134.34 | 157 |
| 20000 | 142.54 | 148 |
Replaceable Equivalent: Form-fit equivalent to flexible 0.220″ O.D. 25GHz phase-stable microwave coaxial assemblies.
The PSE560LS-25G-F stranded conductor configuration allows enhanced flex fatigue life while maintaining stringent phase and loss requirements up to 25 GHz.
Frequently Asked Questions
What are the advantages of using a stranded inner conductor (19/0.29mm) in PSE560LS-25G-F?
A stranded inner conductor comprised of 19 individual 0.29mm silver-plated copper wires offers superior mechanical flexibility and resistance to flex fatigue compared to solid center conductors. This makes PSE560LS-25G-F exceptionally well-suited for dynamic test environments, robotic routing, and applications requiring tight bend radii (static 24mm / dynamic 48mm) without risking conductor work-hardening or mechanical failure.
How does the double-shielding tape and braid configuration affect high-frequency RF performance up to 25 GHz?
The inner silver-plated copper strip tape provides 100% optical coverage to prevent high-frequency leakage, while the outer silver-plated copper braid adds structural integrity and low DC resistance ground paths. Coupled with an intermediate LD-PTFE interlayer, this hybrid architecture ensures screening effectiveness exceeding 90 dB while preserving smooth phase response and low VSWR up to 25 GHz.
What is the impact of the K1 and K2 constants on attenuation calculations for custom lengths?
The total attenuation (IL in dB/100m) at any target frequency (F_MHz) can be precisely modeled using IL = 0.880600 × √(F_MHz) + 0.000900 × F_MHz. The √F term (K1) accounts for skin effect losses in the conductors, while the linear F term (K2) models dielectric loss within the LD-PTFE. This mathematical stability allows system engineers to accurately predict assembly losses across the entire 0.5 GHz to 25 GHz operational band.
