The ECX-1048B series, featuring small and highly stable SMD crystals, comes in a tiny ceramic package measuring 1.2 x 1.0 x 0.33 mm (length x width x height). These crystals are distinguished by their low equivalent series resistance (ESR) and a maximum aging of ±2 ppm in the first year. The 48B-CKY model specifically boasts a tolerance of up to ±10 ppm at +25°C and maintains a stability of ±10 ppm across a temperature range of -30°C to +85°C. They are perfectly suited for use in RFID, NFC, Wi-Fi, RF telecommunications, and video and audio applications.