PSE760L-18G-BF
High Frequency Low Loss Phase Stable Coaxial Cable
Designed for high-reliability RF environments operating up to 18 GHz. Featuring expanded Low-Density PTFE (LD-PTFE) dielectric material and a multi-layer outer shield, the PSE760L-18G-BF delivers optimal signal integrity, ultra-low insertion loss, and outstanding mechanical phase stability during dynamic movement and temperature fluctuations.
Max Frequency:DC-18GHz
Velocity of Prop.：78%
Inner ConductorStranded SPC (1/2.1mm)
Outer Diameter:7.6mm
Structure & Construction Characteristics
| Structure Layer | Material Description | Construction Details | Nom. O.D. (mm) |
|---|---|---|---|
| Inner Conductor | Silver Plated Copper | 1 / 2.10 mm | 2.10 |
| Insulation Dielectric | LD-PTFE (Low-Density PTFE) | — | 6.10 |
| Inner Shield | Silver Plated Copper Strip Tape | — | 6.30 |
| Interlayer | LD-PTFE Tape | — | 6.60 |
| Outer Shield | Silver Plated Copper Wire Braid | — | 7.13 |
| Outer Jacket | Blue FEP (Fluorinated Ethylene Propylene) | — | 7.60 |
Electrical & Mechanical Characteristics
| Electrical Parameter | Standard Value | Mechanical & Environmental | Standard Value |
|---|---|---|---|
| Impedance | 50 Ohm | Min. Static Bend Radius | 38.00 mm |
| Capacitance | 88 pF/m | Min. Dynamic Bend Radius | 76.00 mm |
| Velocity of Propagation | 78% | Nominal Weight | 0.121 kg/m |
| Max Operating Frequency | 18 GHz | Operating Temperature Range | -55°C to +165°C |
| Screening Effectiveness | > 90 dB | Phase Change VS Bending | ±0.2 °/GHz |
| Dielectric Withstanding Voltage | 2500 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 = 0.512582, K2 = 0.000591
| Frequency (MHz) | Nom. Attenuation (@25℃ & Sea Level) [dB/100m] | Max. Power Handling (@40℃ & Sea Level) [W] |
|---|---|---|
| 500 | 11.76 | 2805 |
| 1000 | 16.80 | 1963 |
| 3000 | 29.85 | 1105 |
| 4000 | 34.78 | 948 |
| 6000 | 43.25 | 763 |
| 8000 | 50.57 | 652 |
| 10000 | 57.17 | 577 |
| 12000 | 63.24 | 521 |
| 14000 | 68.92 | 478 |
| 16000 | 74.29 | 444 |
| 18000 | 79.41 | 415 |
Replaceable Equivalent: HUBER+SUHNER SUCOFLEX106
The PSE760L-18G-BF matches standard electrical and dimensional profiles, serving as a direct form-fit-function replacement for demanding system assemblies.
Frequently Asked Questions
How does LD-PTFE dielectric improve phase stability in the PSE760L-18G-BF cable?
Low-Density PTFE (LD-PTFE) incorporates micro-porous air gaps within the dielectric structure, reducing the dielectric constant to achieve a velocity factor of 78%. This lower density significantly reduces phase variance under mechanical flexure (±0.2 °/GHz) and thermal strain (≤1500 PPM over -45°C to +85°C) compared to solid PTFE alternatives.
What shielding architecture allows >90 dB screening effectiveness at 18 GHz?
The PSE760L-18G-BF utilizes a dual-shielding design combined with an insulating interlayer. The inner shield employs a silver-plated copper strip tape providing 100% optical coverage to minimize leakage, followed by an LD-PTFE interlayer and a high-density silver-plated copper wire braid outer shield. This composite construction ensures leakage resistance exceeding 90 dB across the entire operational band up to 18 GHz.
Is PSE760L-18G-BF fully interchangeable with SUCOFLEX106 in existing RF assemblies?
Yes. PSE760L-18G-BF is engineered to serve as a direct form-fit-function alternative to SUCOFLEX106. It features matching outer mechanical boundaries (7.60 mm outer diameter, 38 mm minimum static bend radius) and equivalent characteristic impedance (50 Ω) and attenuation performance up to 18 GHz, allowing seamless integration into existing RF systems.
