This document is the product specification of the HC-49/U-S-SMD-4 Pad quartz crystal unit produced by Aker. The product has a nominal frequency of 12.000 MHz and operates in the fundamental mode of oscillation. The frequency tolerance is ±30 PPM at 25°C, and the frequency stability is within ±50 PPM over the temperature range. The operating temperature range is -40 to +85°C. The product is RoHS compliant and lead-free. For detailed information on product dimensions and solder reflow characteristics, please refer to the document.
The CA4-12,000-18-3050-X is a HC‑49/U‑S‑SMD 4‑pad quartz crystal unit designed for precise frequency control at 12.000 MHz. It is RoHS compliant and lead‑free, suitable for a wide range of electronic applications.
The datasheet lists key electrical parameters such as a frequency tolerance of +30 ppm at 25 °C, stability of +50 ppm over temperature, and a load capacitance of 18 pF. Mechanical specifications include package dimensions in millimeters and reflow characteristics of +260 °C for 10 s. Temperature ranges cover -40 °C to +85 °C (operating) and -55 °C to +125 °C (storage).
| Nominal Frequency | 12.000 MHz |
|---|---|
| Frequency Tolerance (25 °C) | +30 ppm |
| Frequency Stability over Temperature | +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) | 50 Ω Max |
| Drive Level | 100 µW Typ – 500 µW Max |
| Solder Reflow Characteristics | +260 °C for 10 s Max |
| Package Type | HC‑49/U‑S‑SMD 4‑Pad |
The nominal frequency is 12.000 MHz.
It operates from –40 °C to +85 °C.
The load capacitance is 18 pF.
Yes, the document states it is RoHS compliant and lead‑free.