SFL Cable Series
Titantek
SFL (Spiral Flex™) Coaxial Cable
Titantek’s SFL Spiral Flex™ coaxial cables, more flexible and supple versions of the industry standard SS Spiral Strip constructions, have been designed with a specially formulated 105ºC jacket compound and stranded silver plated copper center conductors. These 50 ohm versions exhibit VSWR levels that meet or exceed similar size flexible constructions, and just like their SS cable counterparts, offer excellent shielding effectiveness with readily available connectors.
The solid light blue jackets offer excellent braid-to-jacket adhesion and electrical stability during usage.
Although the insertion loss is slightly higher than their SS cable counterparts, SFL attenuation levels through 18 GHz are substantially lower than comparable MIL-DTL-17 constructions.
| Key Specifications (Click on Data Sheet Above for Additional Details). | ||
| Generic Name | SFL402-105Flex | SFL405-105Flex |
| Flex Type | Flexible | Flexible |
| Impedance | 50 Ohm | 50 Ohm |
| Center conductor | Stranded silver plated copper | Stranded silver plated copper |
| Dielectric Type | Solid PTFE | Solid PTFE |
| Inner shield | Spiral strip of silver plated copper | Spiral strip of silver plated copper |
| Outer braid | Round silver plated copper | Round silver plated copper |
| Jacket Material | Solid light blue specially formulated compound | Solid light blue specially formulated compound |
| Jacket Diameter | 0.180inch | 0.115inch |
| Velocity of Propagation | 70% | 70% |
| Shielding Effectiveness | <-110dB | <-110dB |
| Attenuation at 1 Ghz. | 14.5dB | 23.7dB |
| Capacitance (pF/ft) | 29.4 | 29.4 |
| Frequency, Max | 34GHz | 63GHz |
| Operating Temperature | -55°C~105°C | -55°C~105°C |
| Coax Type | Coax | |
Attenuation Calculation and K Factors
Although typical and maximum attenuation values are given for discrete frequencies, typical attenuation values may be calculated by using K1 and K2 factors for each construction. The K1 factor is calculated by taking into consideration the type, strand factor, and diameter of the center conductor, and the impedance of the cable. The K2 factor is calculated by taking into consideration the velocity of propogation and the dissipation factor of the dielectric.
Formula for Calculating Attenuation using K Factors:
SS (Spiral Strip) Coaxial Cable
Attenuation (dB/100 ft) at any frequency (MHz) =(K1 x √¯¯¯¯¯ + (K2 x frequency)
| SFL402 | SFL405 | |
| K1 | 0.331 | 0.658 |
| K2 | 0.001 | 0.001 |