ECS-320-10-37B-CKY-TR is a sub-miniature SMD crystal oscillator designed for compact wireless and portable applications. The device features a 2.0 × 1.6 mm footprint with a 0.45 mm height ceramic package, enabling integration into space-constrained designs. It operates across a frequency range of 16.000 to 96.000 MHz in fundamental mode with a 10 pF load capacitance, frequency tolerance of ±10 ppm at +25°C, and frequency stability of ±10 ppm over the extended temperature range of -30°C to +85°C. The crystal exhibits low first-year aging of ±1 ppm maximum, shunt capacitance of 3 pF, and drive level up to 100 µW, with ESR specifications ranging from 150 O (16–19.999 MHz) to 25 O (82–96 MHz). This combination of compact dimensions, low aging, and extended temperature stability makes it ideal for wireless communications, IoT devices, and portable consumer electronics requiring reliable frequency reference with minimal board space.