In principle, the Y-FLEX mating face can be adapted to any standard ZIF, non-ZIF or LIF connector. However,
specially developed high-speed ZIF or non-ZIF connectors such as the HF507 series from Yamaichi are the most
suitable for achieving optimal performance.
Y-FLEX compared with FFC and standard FPC
The biggest difference between Y-FLEX and standard FPCs lies in the insulation material. Compared with the
standard polyimides used in conventional FPCs, the LCP insulation material in the Y-FLEX exhibits a much
lower dielectric constant εr and a much lower dissipation factor tan δ at high frequencies. As a result,
attenuation is much lower, and the data transmission rates are much higher than in standard FPCs.
Moreover, LCP has superior hygroscopic properties compared with those of standard polyimide.
processing easier and allows trace spaces and widths of less than 30 µm to be realised with exceptionally
high accuracy. Use in high relative humidity conditions is also much more stable.
Y-FLEX compared with
Transfer standards such as PCIe Gen 4 (16 GT/s), USB 3.2 Gen 2 (10 Gbps) or eDP HBR 3 (8.1 Gbps) can be
reached without any problems with Y-FLEX. In the latest measurements performed on the current Y-FLEX
generation, data rates of 56 Gbps (PAM4) were even realised over a cable length of 100 mm. Owing to the
described manufacturing process (above all the precision etching and use of the LCP material as an
insulator), the Y-FLEX has one very decisive advantage: it is 100 percent reproducible.
This means that all conductive traces are completely identical and thus achieve unprecedented constant
transmission characteristics over their entire lengths. In contrast, in a coaxial cable, the relationship
between inner and outer conductors differs along the cable due to the braid structure. An even more decisive
influencing factor is the assembly of the individual coaxial conductors on the
connector at the end of the line. There may be length and thus signal runtime differences in individual
Hygroscopic properties of LCP and standard‑polyimide
Fit for future markets
A leading manufacturer of mobile communications and high-frequency measurement technology recognised the
outstanding technology of Y-FLEX several years ago and now uses it in a variety of projects, e. g. in 5G
testers and body scanners. In addition to measurement technology, Y-FLEX is used, for example, in autonomous
vehicles, data networking, image processing and medical technology.
Find out more now!