TSX-322516.0000MF20X-W6 is a MHz-range crystal unit manufactured by Seiko Epson Corporation, designed for both clock and RF reference applications. The device operates in the 16 MHz to 48 MHz frequency range with fundamental overtone order and features external dimensions of 3.2 × 2.5 × 0.6 mm. It is RoHS compliant and lead-free, with a storage temperature range of -40°C to +125°C and an operating temperature range of -40°C to +85°C. The crystal unit offers frequency tolerance of ±10 × 10?6 at +25°C, frequency aging of ±1 × 10?6 per year maximum, and motional resistance (ESR) specifications ranging from 60 O maximum (16–21 MHz) to 40 O maximum (21–48 MHz). Common applications include mobile phones, Bluetooth, W-LAN, ISM band radio, and clock circuits for microprocessor units.