A new high-temperature nylon withstands 250 to 260 C for lead-free soldering of circuit-board assemblies, which is 20° to 30° C hotter than for conventional lead soldering.
A new high-temperature nylon withstands 250 to 260 C for lead-free soldering of circuit-board assemblies, which is 20° to 30° C hotter than for conventional lead soldering. The Zytel HTN LX series from DuPont Engineering Polymers, Wilmington, Del., is said to withstand higher peak reflow temperatures than other nylon 6T grades or nylon 46. In tests of actual connectors, the LX series was reportedly tougher than nylon 9T (Kuraray’s Genestar) or PPS and had greater weld strength than those materials or other nylon 6T resins. The new material also boasts better flow than competitive materials and produces fully crystallized parts in water-heated tooling. LX resins contain 20% to 45% glass and have a UL 94V-0 rating.