This document provides the electrical and mechanical specifications of Aker's C7S-18.432-12-3030-X Quartz Crystal Unit. It is a 7 x 5 mm SMD packaged quartz crystal unit with a frequency of 18.432 MHz, operating in the fundamental mode of oscillation. It has a frequency tolerance of ±30 PPM and frequency stability of ±30 PPM over the temperature range. In addition, it has a load capacitance of 12 pF, maximum shunt capacitance of 7, and equivalent series resistance of 45 ohms.
The AKER C7S-18.432-12-3030-X is a 7x5 mm surface‑mount quartz crystal unit with a metal‑cap, ceramic‑base construction and RoHS compliance.
It provides a nominal frequency of 18.432 MHz, load capacitance of 12 pF, frequency tolerance of +30 ppm at 25 °C and stability of +30 ppm over temperature. The unit operates from –40 °C to +85 °C (extended) and can be stored from –55 °C to +125 °C.
| Nominal Frequency | 18.432 MHz |
|---|---|
| Frequency Tolerance at 25°C | +30 ppm |
| Frequency Stability over Temperature Range | +30 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 | 12 pF |
| Shunt Capacitance (Maximum) | 7 pF |
| Equivalent Series Resistance (ESR) | 45 Ω Max |
| Drive Level | 100 µW Typ – 500 µW Max |
| Solder Reflow Characteristics | +260 °C for 10 s Max |
| Package | Metal cap, ceramic base |
| Package Size | 7 x 5 mm SMD |
The nominal frequency is 18.432 MHz.
It operates from –40 °C to +85 °C (extended).
The load capacitance is 12 pF.
The package measures 7 mm by 5 mm in an SMD form factor.