This is a product specification for a quartz crystal unit
This one‑page datasheet describes the AKER quartz crystal identified by part number C-3.6864-18-3050‑X. It lists the crystal’s electrical parameters such as nominal frequency, tolerance, stability, load capacitance and drive level, as well as mechanical dimensions and marking information.
The document also includes RoHS compliance notes, temperature ranges for operation and storage, aging limits, and solder reflow characteristics. All dimensions are given in millimetres, and the sheet references the product’s HC‑49/U through‑hole package.
| Nominal Frequency | 3.6864 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) | 200 Ohms Max |
| Drive Level | 100 Typ - 500 Max uW |
| Solder Reflow Characteristics | +260 for 10 s Max °C |
| Maximum Height | 4.56 mm |
| Maximum Length | 11.05 mm |
The nominal frequency is 3.6864 MHz.
It operates from –40 °C to +85 °C (extended range).
The load capacitance is 18 pF.