This document describes the electrical and mechanical specifications of a product, Quartz Crystal Unit HC-49/U-S, manufactured by Aker. The product has a nominal frequency of 14.7456 MHz, operates in fundamental mode of oscillation, has a frequency tolerance of ±30 PPM at 25°C, and a temperature range of -40 to +85 º C. It also has a load capacitance of 18 pF and an equivalent series resistance of 50 ohms.
The CA-14.7456-18-3050-X is a HC‑49/U‑S through‑hole quartz crystal unit designed for precise frequency applications. It operates at a nominal frequency of 14.7456 MHz with a load capacitance of 18 pF and an ESR of up to 50 Ω.
The device complies with RoHS (lead‑free) requirements and is rated for an extended operating temperature range of –40 °C to +85 °C. Ordering information includes the part number CA-14.7456-18-3050‑X and the Farnell order code 1538745.
| Nominal Frequency | 14.7456 MHz |
|---|---|
| Frequency Tolerance at 25 °C | +30 ppm |
| Frequency Stability over Temperature | +50 ppm Max |
| Operating Temperature Range (Extended) | -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) | 50 Ω Max |
| Drive Level | 100 µW Typ – 500 µW Max |
| Solder Reflow Characteristics | +260 °C for 10 s Max |
The nominal frequency is 14.7456 MHz.
The part number is CA-14.7456-18-3050-X.
It operates from –40 °C to +85 °C (extended range).