FA-12832.0000MF20X-K5 is a MHz-range crystal unit designed for RF reference and clock applications, operating at fundamental frequencies between 19.2 MHz and 54 MHz. The device features a frequency tolerance of ±10 × 10?6 for RF reference applications and ±30 × 10?6 for clock applications at +25°C, with frequency-temperature characteristics of ±10 × 10?6 and ±30 × 10?6 respectively over the -20°C to +75°C range. The motional resistance (ESR) varies by frequency band, ranging from 150 O maximum at 19.2–20 MHz down to 60 O maximum at 26–54 MHz, with load capacitance selectable from 6 pF to infinity. Operating over a temperature range of -40°C to +85°C (with extended +105°C option available), the unit exhibits excellent frequency stability with aging of ±1 × 10?6/year maximum in the first year. This crystal unit is ideal for precision timing in telecommunications, RF systems, and embedded clock applications requiring high frequency stability and low phase noise.