QT161S-24.000MEEV-T

Overview

The QT161S-24.000MEEV-T is a surface-mount quartz crystal oscillator manufactured by QST. It operates at a nominal frequency of 24 MHz with a load capacitance of 8 pF. The component features a 4-SMD, no-lead package with dimensions of 1.6 x 1.2 mm. Frequency stability is rated at ±10 ppm at 25°C and ±10 ppm across the operating temperature range of -20°C to +70°C. The equivalent series resistance (ESR) is specified as 100 Ohms.

Feature Summary

• Seam seal construction for enhanced environmental reliability
• Surface-mount design compatible with automated assembly processes
• High frequency stability within specified industrial temperature ranges

Applications

• Microcontroller clock sources
• Communication interface timing circuits
• Digital signal processing systems

Procurement Notes

Verify the manufacturer designation carefully, as this specific part number variant is associated with QST in distributor listings, while similar suffixes may indicate TXC Corporation production. Confirm the load capacitance is 8pF and the frequency tolerance matches the MEEV specification of ±10ppm over the -20°C to +70°C range before integration. Ensure the 4-SMD no-lead footprint aligns with the PCB layout requirements.

Selection Notes

Select this component when a compact 24 MHz reference is required for space-constrained designs. The 8pF load capacitance must match the oscillator circuit's external capacitor values to ensure accurate frequency generation. Consider the ±10ppm stability requirement against the system's timing jitter budget. The no-lead package offers advantages for high-volume SMT manufacturing compared to leaded alternatives.

Part Context

This part belongs to the QT161S series of seam-seal quartz crystals. The series typically includes variants with different frequencies and stability grades, such as ±20ppm or ±30ppm options. The MEEV suffix specifically denotes the 24MHz frequency, 8pF load capacitance, and ±10ppm stability over the -20°C to +70°C temperature range for QST-manufactured units.

Replacement Considerations

Direct substitutes include the QT161S-24.000MEEQ-T from TXC Corporation, which shares the same form factor but specifies a 10pF load capacitance instead of 8pF. Other potential replacements within the QT161S family must be verified for identical 8pF load capacitance and ±10ppm stability to maintain circuit performance without redesign.