This document is a specification sheet for CA-4.000-18-3050-X quartz crystal unit. The crystal oscillator has a frequency of 4.000MHz and a working temperature range of -40℃ to 85℃. The storage temperature range is -55℃ to 125℃.
The CA-4.000-18-3050-X is a HC-49/U-S through‑hole quartz crystal unit offered by AKER. It is designed for precise frequency control in electronic circuits and complies with RoHS requirements.
The sheet lists detailed electrical parameters such as nominal frequency, tolerance, stability, and load capacitance, as well as mechanical dimensions and temperature ranges. Ordering information includes the part number and a Farnell order code.
| Nominal Frequency | 4.000 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 |
| Shunt Capacitance (Maximum) | 7 pF |
| Equivalent Series Resistance (ESR) | 120 Ohms Max |
| Drive Level | 100 Typ - 500 Max µW |
| Solder Reflow Characteristics | +260 °C for 10 s Max |
| Maximum Height | 11.35 mm |
The nominal frequency is 4.000 MHz.
It operates from –40 °C to +85 °C (extended range).
Yes, the crystal is RoHS compliant.
The load capacitance is 18 pF.