This document is a specification for C-4.194304-18-3050-X Quartz Crystal Unit HC-49/U-Through Hole, mainly including product frequency, capacitance, impedance and other information.
This document provides the electrical and mechanical specifications for the AKER quartz crystal part number C-4.194304-18-3050-X. Key parameters such as nominal frequency, load capacitance, ESR, and drive level are listed for design reference.
Mechanical dimensions, marking details, and compliance information (RoHS, lead‑free) are also included, along with the part's temperature operating limits and solder reflow characteristics.
| Nominal Frequency | 4.194304 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 |
| Shunt Capacitance (Maximum) | 7 pF |
| Equivalent Series Resistance (ESR) | 100 Ohms Max |
| Drive Level | 100 Typ - 500 Max uW |
| Solder Reflow Characteristics | +260 for 10 s Max °C |
The nominal frequency is 4.194304 MHz.
The crystal requires a load capacitance of 18 pF.
It operates from –40 °C to +85 °C (extended range).
The ESR is limited to 100 Ω max.