FA-12826.0000MF10Z-W5 is a MHz-range crystal unit designed for both RF reference and clock applications, operating with fundamental frequency in the range of 19.2 MHz to 54 MHz. The unit features a frequency tolerance of ±10 × 10?6 for RF reference and ±30 × 10?6 for clock applications at +25°C, with frequency versus temperature characteristics of ±10 × 10?6 and ±30 × 10?6 respectively over -20°C to +75°C. The motional resistance (ESR) varies by frequency range, from 150 O maximum at 19.2–20 MHz down to 60 O maximum at 26–54 MHz, with load capacitance ranging from 6 pF to infinity. Operating temperature range extends from -40°C to +85°C (with optional +105°C capability), and storage temperature range is -40°C to +125°C. This crystal unit is ideal for precision timing in telecommunications, automotive electronics, and consumer RF applications requiring stable frequency references.