ECS ECX-1048B 48MHz Ultra-Miniature Crystals offer a compact 1.2mm x 1.0mm x 0.35mm ceramic package. The crystals have a frequency range of 32MHz to 60MHz, a ±10ppm frequency tolerance, and a ±20ppm frequency stability. ECS ECX-1048B 48MHz Ultra-Miniature Crystals are ideal for the Internet of Things (IoT) and wearable applications.