PSE780L-18G-F Enhanced Triple Shielded Low Loss Cable
Enhanced Triple Shielded Phase Stable Cable (18GHz)
PSE780L-18G-F is an enhanced (E) high-performance 50 Ohm RF coaxial cable engineered for high-density EMI and harsh environmental conditions up to 18 GHz. By adding a high-heat aluminum foil interlayer between the silver-plated copper strip and braided shield, it delivers exceptional shielding effectiveness, robust mechanical crush resistance, and ultra-low attenuation.
Max Frequency:DC-18GHz
Velocity of Prop.：83%
Screening Effectiveness: > 90 dB
Outer Diameter:7.9mm
Structure & Construction Characteristics
| Structure Layer | Material | Construction | Nom. O.D. (mm) |
|---|---|---|---|
| Inner Conductor | Silver Plated Copper | 1 / 2.30 mm (Solid) | 2.30 |
| Insulation | LD-PTFE (Low Density PTFE) | – | 6.30 |
| Inner Shield | Silver Plated Copper Strip | Helical Wrap | 6.60 |
| Middle Shield | High Heat Aluminum Foil | Wrap | 6.70 |
| Outer Shield | Silver Plated Copper Wire | Braid | 7.25 |
| Jacket | Light Blue FEP | – | 7.90 |
Mechanical & Environmental Parameters
| Min. Bending Radius (Static) | 40.0 mm | Weight | 0.135 kg/m |
| Min. Bending Radius (Dynamic) | 80.0 mm | Operating Temperature | -55 to +165 ℃ |
Electrical & Mechanical Characteristics
| Impedance | 50 Ohm | Max Operating Frequency | 18 GHz |
| Velocity of Propagation | 83% | Screening Effectiveness | > 95 dB |
| Capacitance | 80 pF/m | Dielectric Withstanding Voltage | 2500 V DC |
| Phase Change vs Bending | ±0.3 °/GHz | Phase Change vs Temp (-45~+85℃) | ≤ 750 PPM |
Attenuation & Power Handling @ 25℃ & Sea Level
Insertion Loss Calculation: IL = K1 * sqrt(F_MHz) + K2 * F_MHz (dB/100m)
Constants: K1 = 0.45630 | K2 = 0.00032
| Frequency (MHz) | Nominal Attenuation (dB/100m @ 25℃) | Max Power Handling (W @ 40℃) |
|---|---|---|
| 500 | 10.36 | 2580 |
| 1000 | 14.75 | 1813 |
| 2000 | 21.05 | 1270 |
| 3000 | 25.95 | 1030 |
| 4000 | 30.14 | 887 |
| 6000 | 37.26 | 717 |
| 8000 | 43.37 | 616 |
| 10000 | 48.83 | 548 |
| 12000 | 53.83 | 497 |
| 16000 | 62.84 | 425 |
| 18000 | 66.98 | 399 |
Cross Reference Replacement
PSE780L-18G-F serves as an enhanced direct replacement for MAXGAIN-300 high-performance shielded assemblies.
780 Series Family Selection Guide
The 780 series cables share a ~7.80mm – 7.90mm outer platform designed for 18GHz phase-stable performance. Select the right variant based on your mechanical and shielding needs:
| Model | Conductor Type | Shielding Layer | Atten. @18GHz | Best Suitable Application |
|---|---|---|---|---|
| PS780L-18G-F | Solid (1/2.30mm) | Double Shield | 66.98dB/100m | Standard low-loss interconnects & static routing. |
| PS780LS-18G-F | Stranded (19/0.48mm) | Double Shield | 75.30dB/100m | Dynamic bending, test leads, & frequent motion. |
| PSE780L-18G-F (This Model) | Solid (1/2.30mm) | Triple Shield (Foil) | $66.98dB/100m | Enhanced EMI environments, military/aerospace, & extra mechanical durability. |
Frequently Asked Questions
What does the “E” designation represent in PSE780L-18G-F?
“E” stands for Enhanced. It indicates the addition of a high-heat aluminum foil middle shield, creating a 3-layer shielding structure that boosts screening effectiveness beyond 95 dB and increases overall cable crush resistance.
Does PSE780L-18G-F have higher attenuation due to the additional foil layer?
No, the attenuation remains identical to the standard solid-conductor PS780L-18G-F (66.98 dB/100m at 18GHz) while offering superior protection against RF interference in complex electronic warfare or dense radar cabinets.
Which industry cable does PSE780L-18G-F replace?
It is designed to match and replace MAXGAIN-300, delivering comparable low attenuation, 83% velocity of propagation, and triple-shielded structural protection.
