This document is about the specification of CA-24.000-18-3050-X Quartz Crystal Unit HC-49/U-S - Through Hole, including its frequency, temperature range, capacity, resistance, etc.
The HC-49/U-S is a through‑hole quartz crystal unit designed for precise frequency generation in electronic circuits. It complies with RoHS requirements and is supplied by AKER USA.
Key specifications include a nominal frequency of 24.576 MHz, load capacitance of 18 pF, and an operating temperature range of –40 °C to +85 °C. Mechanical dimensions and reflow characteristics are also listed for PCB assembly.
| Nominal Frequency | 24.576 MHz |
|---|---|
| Frequency Tolerance (25 °C) | +30 ppm |
| Frequency Stability (Temp Range) | +50 ppm Max |
| Operating Temperature Range | -40 °C to +85 °C |
| Storage Temperature Range | -55 °C to +125 °C |
| Aging per Year | +3 ppm Max |
| Load Capacitance | 18 pF |
| Shunt Capacitance (Maximum) | 7 pF |
| Equivalent Series Resistance (ESR) | 40 Ω Max |
| Drive Level | 100 µW Typ – 500 µW Max |
| Solder Reflow Temperature | +260 °C for 10 s Max |
The nominal frequency is 24.576 MHz.
It requires a load capacitance of 18 pF.
The unit operates from –40 °C to +85 °C.
The maximum equivalent series resistance is 40 Ω.