QT49S-16.384MEIK-T

Overview

The QT49S-16.384MEIK-T is a quartz crystal resonator manufactured by QST, operating at a fundamental frequency of 16.384 MHz. It features a frequency tolerance of ±10 ppm at 25°C and a frequency stability of ±20 ppm over the temperature range of -20°C to +70°C. The component utilizes an HC-49/US package with dimensions of 11.40mm x 4.80mm. It has a load capacitance of 20pF and a maximum series resistance of 30 Ohms.

Feature Summary

• Provides precise timing signals with ±10 ppm initial tolerance at room temperature
• Maintains frequency stability within ±20 ppm across the industrial temperature range
• Utilizes standard HC-49/US through-hole compatible package for reliable mounting

Applications

• Microcontroller clock generation circuits
• Communication interface timing references
• Digital signal processing systems requiring stable oscillation

Procurement Notes

Verify the specific suffix MEIK against the manufacturer's official datasheet to confirm the exact frequency tolerance and stability specifications. Ensure the load capacitance requirement matches the circuit design. Confirm package compatibility and soldering requirements before integration into the final assembly.

Selection Notes

Select this component when a 16.384 MHz reference with ±10 ppm accuracy is required. Compare stability ratings against environmental conditions. Verify that the 20pF load capacitance aligns with the oscillator circuit parameters. Check series resistance limits for power consumption constraints.

Part Context

This part belongs to the QT49S series of quartz crystals from QST. The series offers various frequency options and tolerance grades. The HC-49/US form factor is widely used in general-purpose electronic applications. Other variants in the series differ primarily in frequency, tolerance, and stability ratings.

Replacement Considerations

Direct substitutes must match the 16.384 MHz frequency, HC-49/US package, 20pF load capacitance, and ±10 ppm tolerance. Verify equivalent electrical characteristics such as series resistance and stability over temperature. Cross-reference with manufacturer cross-reference lists for confirmed alternatives.