wiredinUSA February 2020

Low fluoride for high altitude

Spec 55 LF is qualified to mil-spec SAE- AS22759. The single wall Spec 55 LF system is qualified to SAE-AS22759/51 and /52 while the dual wall variant is qualified to SAE- AS22759/53 and /54. Flexible cables replace coax L-com has launched a new series of coaxial cable assemblies featuring 402SS cable, suitable to replace semi-rigid coax cable in applications that benefit from greater flexibility. L-com’s new LCCA series 402SS cable assemblies are designed to offer an alternative to .141 semi-rigid (RG402) style cables, providing flexibility with performance characteristics very similar to semi-rigid coax. The cables operate up to 18GHz and have several connector options including male and female SMA and type-N connectors, type-N female bulkhead and male SMA right-angle connector combinations. The 402SS coax cable features a solid center conductor, PTFE dielectric and a silver- plated copper braid outer shield over a silver-plated copper spiral strip inner shield. The assemblies have stainless steel connectors and heavy-duty booting.

TE Connectivity has released its Spec 55 low fluoride (55 LF) wire and cable insulation system for avionic applications and high altitude environments. Made from rugged fluoropolymer, TE’s Spec 55 LF insulation has an outgassing rating of less than 10ppm, helping to reduce the potential for corrosion of other components by trappedgases escaping in a lowpressure environment. In addition to an outgassing rating significantly below the 20ppm specified under mil-spec SAE-AS22759, the Spec 55 LF insulation system has five times the scrape abrasion resistance required by the standard. Spec 55 LF is available in lightweight single wall and extra-rugged dual wall variants with a choice of cable configurations. “Mitigating corrosion potential by reducing outgassing is critically important to customers designing for space, launch, and missile applications,” said Patrick Murphy, product manager for TE’s aerospace, defense and marine division. “TE is … the only supplier of adual wall mil-spec qualified option, and one of only two suppliers of the single wall option.”

41

wiredInUSA - February 2020