This is a specification sheet for Aker's HC-49/U-S-through hole quartz crystal unit
The CA-18.432-18-3050-X is a HC‑49/U‑S through‑hole quartz crystal unit designed for precise frequency applications. It offers a nominal frequency of 18.432 MHz with tight tolerance and stability over a wide temperature range.
The device complies with RoHS and lead‑free requirements, and includes detailed electrical parameters such as ESR, load capacitance, and drive level. Ordering information and part number are provided for easy procurement.
| Nominal Frequency | 18.432 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 °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 Typ – 500 Max µW |
| Solder Reflow Characteristics | +260 °C for 10 s Max |
| Maximum Height (Mechanical) | 11.35 mm |
The nominal frequency is 18.432 MHz.
It operates from –40 °C to +85 °C (extended range).
The part number is CA-18.432-18-3050‑X.