ECS ECX-16R SMD Tuning Fork Crystal is a miniature crystal with a very low equivalent series resistance (ESR) rating, which is ideal for low-power microcontrollers and real-time clock (RTC) applications. The crystal is RoHS compliant and features a compact 1.6mm x 1mm footprint. The ECS ECX-16R SMD Tuning Fork Crystal offers a 32.768KHz frequency rating, a ±20ppm frequency tolerance, and a 12.5pF load capacitance within a -40°C to +85°C operating temperature range. The ECX-16R crystal is ideal for wireless, commercial-off-the-shelf (COTS), industrial, and Internet of Things (IoT) applications.