ECS ECX-16R 32.768KHz SMD Tuning Fork Crystals offer a low-in-class ESR of 60KΩ in a 1.6mm x 1.0mm footprint. ECS ECX-16R SMD Tuning Fork Crystals feature a 32.768KHz frequency, 12.5pF load capacitance, and a -40C to +85C operating temperature range. Applications include wireless, industrial, Internet of Things (IoT), and commercial-off-the-shelf (COTS).