This document is a product specification for a 18.4320 MHz quartz crystal unit. The quartz crystal unit is an SMD package with a rated frequency of 18.4320 MHz and a frequency stability of ±30 PPM. The operating temperature range is -40 to +85 degrees Celsius and the storage temperature range is -55 to +125 degrees Celsius.
The AKER C5S-18.432-12-3030-X is a surface‑mount quartz crystal unit sized 5 × 3.2 mm, intended for use in frequency‑controlled circuits. The document provides full electrical and mechanical data, as well as recommended land‑pattern dimensions.
Key specifications include a nominal frequency of 18.4320 MHz, load capacitance of 12 pF, ESR up to 50 Ω, and operating temperature range from –40 °C to +85 °C. Mechanical details such as package size and recommended solder reflow profile are also listed.
| Nominal Frequency | 18.4320 MHz |
|---|---|
| Frequency Tolerance at 25°C | +30 ppm |
| Frequency Stability over Temperature | +30 ppm Max |
| Operating Temperature Range | -40 to +85 °C |
| Storage Temperature Range | -55 to +125 °C |
| Load Capacitance | 12 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 Size | 5 × 3.2 mm |
The nominal frequency is 18.4320 MHz.
The crystal requires a load capacitance of 12 pF.
It operates from –40 °C to +85 °C.
The recommended reflow is up to +260 °C for 10 seconds.