ECS ECX-2236B2 SMD Crystals are compact and offer low aging of ±2ppm in the first year. The ECX-2236B2 Crystals feature an industry-standard 2.5mm x 2.0mm x 0.55mm ceramic package and are ideal for use in Internet of Things (IoT) and wireless applications. ECX-2236B2 SMD Crystals from ECS feature a 12MHz to 50MHz frequency range and a -30°C to +85°C operating temperature range.