This document is about C-18.432-18-3050-X Quartz Crystal Unit HC-49/U-Through Hole product specification, mainly introduces the product's brand, model, frequency, temperature range, capacitance and other information
This one‑page datasheet describes the AKER C-18.432-18-3050-X quartz crystal, a HC‑49/U through‑hole unit. It lists the electrical parameters such as nominal frequency, load capacitance, ESR and drive level, as well as mechanical dimensions and temperature ranges.
The crystal complies with RoHS (lead‑free) requirements and includes reflow characteristics. It is intended for use in applications requiring a 18.432 MHz reference frequency with tight tolerance and stability over a wide temperature range.
| Nominal Frequency | 18.432 MHz |
|---|---|
| Frequency Tolerance (25 °C) | +30 ppm |
| Frequency Stability over Temperature | +50 ppm Max |
| Operating Temperature Range (Extended) | -40 °C to +85 °C |
| Storage Temperature Range | -55 °C to +125 °C |
| Aging per Year | +3 ppm Max |
| Load Capacitance | 18 pF |
| Shunt Capacitance (Maximum) | 7 pF |
| Equivalent Series Resistance (ESR) | 25 Ω Max |
| Drive Level | 100 µW Typ – 500 µW Max |
| Solder Reflow Characteristics | +260 °C for 10 s Max |
The nominal frequency is 18.432 MHz.
It operates from –40 °C to +85 °C (extended range).
The load capacitance is 18 pF.
Yes, it is RoHS compliant and lead‑free.