This document describes the product specifications of the CA4-32.000-18-3050-X quartz crystal unit produced by AKER USA. The crystal unit is housed in HC-49/U-S-SMD - 4 Pad package, operates at a frequency of 32.000 MHz, and has a frequency tolerance of ±30 PPM and frequency stability of ±50 PPM. It has an operating temperature range of -40 to +85 ºC, a load capacitance of 18 pF, equivalent series resistance of 40 ohms, and a drive level of 100 Typ - 500 Max uW. The product is RoHS compliant and lead-free.
The Aker HC-49/U-S-SMD is a 4‑pad quartz crystal unit designed for high‑frequency applications. This datasheet provides the key electrical parameters such as nominal frequency, load capacitance, ESR and temperature stability.
Mechanical dimensions, RoHS compliance, and solder reflow characteristics are also listed, allowing designers to assess suitability for their PCB designs and manufacturing processes.
| Nominal Frequency | 32.000 MHz |
|---|---|
| Mode of Oscillation | Fundamental |
| 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 pF |
| Shunt Capacitance (Maximum) | 7 pF |
| Equivalent Series Resistance (ESR) | 40 Ω Max |
| Drive Level | 100 µW Typ – 500 µW Max |
| Solder Reflow Characteristics | +260 °C for 10 s Max |
The nominal frequency is 32.000 MHz.
The load capacitance is specified as 18 pF.
It operates from –40 °C to +85 °C (extended range).