The document is a product specification for the C-2.4576-18-3050-X HC-49/U Through Hole Quartz Crystal Unit produced by Aker-USA. It features a nominal frequency of 2.4576 MHz, fundamental mode of oscillation, ±30 PPM frequency tolerance at 25°C, ±50 frequency stability over temperature range, -40 to +85°C operating temperature range (extended), -55 to +125°C storage temperature range, ±3 PPM aging per year, 18 pF load capacitance, maximum 7 shunt capacitance, maximum 300 Ohms equivalent series resistance (ESR), maximum 1 uW drive level, and maximum +260°C solder reflow characteristics.
The AKER C-2.4576-18-3050-X is a HC-49/U through‑hole quartz crystal unit designed for precise frequency applications. It complies with RoHS and is lead‑free, suitable for a range of electronic devices.
Key electrical parameters include a nominal frequency of 2.4576 MHz, load capacitance of 18 pF, and ESR up to 300 Ω. Mechanical dimensions are provided in millimetres, and the part is rated for extended operating temperatures from –40 °C to +85 °C.
| Nominal Frequency | 2.4576 MHz |
|---|---|
| Frequency Tolerance at 25°C | +30 |
| Frequency Stability over Temperature Range | +50 PPM Max |
| Operating Temperature Range (Extended) | -40 to +85 °C |
| Storage Temperature Range | -55 to +125 |
| Aging per Year | +3 PPM Max |
| Load Capacitance | 18 |
| Shunt Capacitance (Maximum) | 7 pF |
| Equivalent Series Resistance (ESR) | 300 Ohms Max |
| Drive Level | 1 uW Max |
| Solder Reflow Characteristics | +260 for 10 s Max °C |
The nominal frequency is 2.4576 MHz.
It operates from –40 °C to +85 °C (extended range).
The load capacitance is 18 pF.