This document describes the electrical and mechanical specifications of the C-7.3728-18-3050-X quartz crystal unit produced by Aker. It is an HC-49/U through hole oscillator with a frequency of 7.3728 MHz and an operating temperature range of -40 to +85 º C. It is RoHS compliant and lead-free. Its features include high frequency stability, a load capacitance of 18 pF, etc.
This datasheet details the key electrical parameters of the AKER HC-49/U quartz crystal unit, including frequency, tolerance, stability, and load capacitance. It also lists mechanical dimensions and marking information for proper identification.
The unit complies with RoHS and is supplied with ordering information such as the Farnell order code (1538711) and part number (C-7.3728-18-3050-X). The document is intended for designers and manufacturers needing precise crystal specifications.
| Nominal Frequency | 7.3728 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) | 40 Ohms Max |
| Drive Level | 100 Typ - 500 Max uW |
| Solder Reflow Characteristics | +260 for 10 s Max °C |
The nominal frequency is 7.3728 MHz.
It operates from –40 °C to +85 °C (extended range).
The equivalent series resistance is limited to 40 Ω max.