This document is the specification of CA-12.000-18-3050-X crystal unit, including its frequency, temperature range, load capacitance and other parameters.
The CA-12.000-18-3050-X is a HC‑49/U‑S through‑hole quartz crystal unit offered by AKER. It is intended for use in frequency‑controlled circuits requiring high stability.
Key electrical parameters include a nominal frequency of 12.000 MHz, frequency tolerance of +30 ppm at 25 °C, and a frequency stability of +50 ppm over temperature. Mechanical dimensions and limits are also listed, along with recommended solder reflow characteristics.
| Nominal Frequency | 12.000 MHz |
|---|---|
| Frequency Tolerance (25 °C) | +30 ppm |
| Frequency Stability over Temperature | +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) | 50 Ω Max |
| Drive Level | 100 µW Typ – 500 µW Max |
| Solder Reflow Characteristics | +260 °C for 10 s Max |
The nominal frequency is 12.000 MHz.
It operates from –40 °C to +85 °C.
The load capacitance is 18 pF.
The ESR must not exceed 50 Ω.