PS520L-28G-BF
High Frequency Low Loss Phase Stable Coaxial Cable 28GhZ
Designed for high-reliability RF environments operating up to 28 GHz. Featuring expanded Low-Density PTFE (LD-PTFE) dielectric material, a solid silver-plated copper inner conductor (1/1.29mm), and a multi-layer outer shield, the PS520L-28G-BF delivers optimal signal integrity, ultra-low insertion loss, and outstanding mechanical phase stability during dynamic movement and temperature fluctuations
Max Frequency:DC-28GHz
Velocity of Prop.：76%
Inner ConductorStranded SPC (1/1.29mm)
Outer Diameter:5.2mm
Structure & Construction Characteristics
| Structure Layer | Material Description | Construction Details | Nom. O.D. (mm) |
|---|---|---|---|
| Inner Conductor | Silver Plated Copper | 1 / 1.29 mm | 1.29 |
| Insulation Dielectric | LD-PTFE (Low-Density PTFE) | — | 3.85 |
| Inner Shield | Silver Plated Copper Strip Tape | — | 4.05 |
| Interlayer | LD-PTFE Tape | — | 4.35 |
| Outer Shield | Silver Plated Copper Wire Braid | — | 4.75 |
| Outer Jacket | Blue FEP (Fluorinated Ethylene Propylene) | — | 5.20 |
Electrical & Mechanical Characteristics
| Electrical Parameter | Standard Value | Mechanical & Environmental | Standard Value |
|---|---|---|---|
| Impedance | 50 Ohm | Min. Static Bend Radius | 18.40 mm |
| Capacitance | 88 pF/m | Min. Dynamic Bend Radius | 46.00 mm |
| Velocity of Propagation | 76% | Nominal Weight | 0.067 kg/m |
| Max Operating Frequency | 28 GHz | Operating Temperature Range | -55°C to +165°C |
| Screening Effectiveness | > 90 dB | Phase Change VS Bending | ±0.2 °/GHz |
| Dielectric Withstanding Voltage | 1800 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 = 0.770610, K2 = 0.000590
| Frequency (MHz) | Nom. Attenuation (@25℃ & Sea Level) [dB/100m] | Max. Power Handling (@40℃ & Sea Level) [W] |
|---|---|---|
| 500 | 17.53 | 1066 |
| 1000 | 24.96 | 749 |
| 2000 | 35.64 | 524 |
| 3000 | 43.98 | 425 |
| 6000 | 63.23 | 295 |
| 8000 | 73.65 | 254 |
| 10000 | 82.96 | 225 |
| 12000 | 91.50 | 204 |
| 18000 | 114.01 | 164 |
| 26500 | 141.08 | 132 |
| 28000 | 145.47 | 128 |
Replaceable Equivalent: HUBER+SUHNER SUCOFLEX104
The PS520L-28G-BF matches standard electrical and dimensional profiles, serving as a direct form-fit-function replacement for demanding system assemblies.
Frequently Asked Questions
How does the LD-PTFE dielectric design maintain phase stability up to 28 GHz in PS520L-28G-BF?
The Low-Density PTFE (LD-PTFE) dielectric uses a micro-porous expanded structure that yields a lower dielectric constant and a 76% velocity of propagation. This minimizes phase fluctuation caused by mechanical movement (±0.2 °/GHz) and temperature swings (≤1500 PPM from -45°C to +85°C), ensuring exceptional signal phase integrity across the entire 28 GHz frequency band.
What shielding performance can be expected from the double-layer tape and braid outer conductor?
PS520L-28G-BF incorporates an inner silver-plated copper strip tape providing 100% optical coverage alongside an outer silver-plated copper braid. Interlayered with LD-PTFE tape, this composite shielding delivers screening effectiveness exceeding 90 dB across the full bandwidth up to 28 GHz, making it ideal for EMI-sensitive environments.
Is PS520L-28G-BF a direct drop-in replacement for HUBER+SUHNER SUCOFLEX104?
Yes, PS520L-28G-BF is engineered as a direct form-fit-function equivalent to SUCOFLEX104. It shares matching mechanical dimensions (5.20 mm O.D., 18.40 mm static bend radius) and electrical metrics (50 Ω impedance, 88 pF/m capacitance, 28 GHz cutoff frequency), permitting seamless system drop-in replacement without redesigning cable routing or connectors.
