FA-23824.0000MB-C3 is a MHz-range crystal unit manufactured by Seiko Epson Corporation, designed for both clock and RF reference applications. The unit operates across a frequency range of 12 MHz to 50 MHz with fundamental overtone order, featuring external dimensions of 3.2 × 2.5 × 0.7 mm and RoHS compliance. Key specifications include a storage temperature range of -40°C to +125°C, operating temperature range of -40°C to +85°C, frequency tolerance of ±50 × 10?6 (standard) for clock applications and ±10 × 10?6 for RF reference, and a maximum drive level of 200 µW. The crystal exhibits excellent frequency stability with aging rates of ±5 × 10?6/year for clock applications and ±1 × 10?6/year for RF reference, making it suitable for mobile phones, Bluetooth, W-LAN, ISM band radio, and microprocessor clock applications.