This product is a quartz crystal unit with a frequency of 8.000 MHz. It can be used in various electronic devices.
The AKER HC-49/U-S-SMD 4 Pad quartz crystal unit is a surface‑mount component designed for precise frequency control in electronic circuits. It complies with RoHS and is lead‑free, making it suitable for modern, environmentally‑friendly designs.
Key specifications include a nominal frequency of 8.000 MHz, load capacitance of 18 pF, ESR up to 60 Ω, and an operating temperature range from –40 °C to +85 °C. Mechanical dimensions are provided in millimetres, and the part meets solder reflow requirements of up to 260 °C for 10 seconds.
| Nominal Frequency | 8.000 MHz |
|---|---|
| Mode of Oscillation | Fundamental |
| Frequency Tolerance at 25°C | +30 ppm |
| Frequency Stability over Temperature Range | +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) | 60 Ω Max |
| Drive Level | 100‑500 µW |
| Solder Reflow Characteristics | +260 °C for 10 s Max |
The nominal frequency is 8.000 MHz.
It requires a load capacitance of 18 pF.
The maximum equivalent series resistance is 60 Ω.
It operates from –40 °C to +85 °C (extended range).