Rogers Corporation has introduced Kappa™ 438 laminates, glass reinforced thermoset laminates that were developed for wireless circuit designers looking for a better performing and more reliable alternative to FR-4 laminates. Kappa 438 laminates have a low Z axis CTE and High Tg for improved design flexibility, PTH reliability and automated assembly compatibility, and can be fabricated using standard epoxy/glass (FR-4) processes.