The document is about CA4-16.000-18-3050-X Quartz Crystal Unit HC-49/U-S-SMD - 4 Pad product specification, including product model, frequency, temperature range and other information
The HC-49/U-S-SMD is a 4‑pad quartz crystal unit designed for precise frequency generation. It offers a nominal frequency of 16 MHz with tight tolerance and stability across temperature ranges.
The device complies with RoHS requirements, is lead‑free, and includes detailed mechanical dimensions and ordering information such as the Farnell order code 1538797 and part number CA4-16,000-18-3050-x.
| Nominal Frequency | 16.000 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 pF |
| Shunt Capacitance (Maximum) | 7 pF |
| Equivalent Series Resistance (ESR) | 40 Ohms Max |
| Drive Level | 100 Typ - 500 Max µW |
| Solder Reflow Characteristics | +260 for 10 s Max °C |
The nominal frequency is 16.000 MHz.
It requires a load capacitance of 18 pF.
Yes, it is RoHS compliant and lead‑free.
The extended operating temperature range is –40 °C to +85 °C.