QT325S-24.000MEIE-T

Overview

The QT325S-24.000MEIE-T is a surface-mount quartz crystal resonator manufactured by QST. It operates at a fundamental frequency of 24 MHz with a load capacitance of 12 pF. The component features a 4-SMD, No Lead package with dimensions of 3.2mm x 2.5mm x 0.7mm. Frequency stability is specified at ±10 ppm at 25°C and ±20 ppm over the operating temperature range of -40°C to 85°C. The equivalent series resistance (ESR) is rated at 50 Ohms maximum.

Feature Summary

• Seam-sealed glass construction for environmental protection
• Surface mount design compatible with automated assembly
• Wide operating temperature range supporting industrial applications

Applications

• Microcontroller clock sources
• Communication module timing references
• Consumer electronics oscillators

Procurement Notes

Verify the specific suffix MEIE against official QST documentation to confirm the exact load capacitance and tolerance specifications. Ensure the procurement channel provides valid RoHS compliance certificates. Confirm that the delivered components match the 4-SMD no-lead package dimensions and are free from physical damage prior to integration into the circuit design.

Selection Notes

Select this component when a 24 MHz reference signal is required in a compact form factor. The 12 pF load capacitance must align with the oscillator circuit's external capacitor values. Consider the ±20 ppm total stability over the full temperature range for system timing accuracy requirements. The low profile height of 0.7mm suits space-constrained printed circuit board layouts.

Part Context

This part belongs to the QT325S series of quartz crystals designed for general-purpose timing applications. The series offers various frequency options and stability grades within a standardized 3.2x2.5mm footprint. It serves as a cost-effective alternative to larger through-hole or metal can packages while maintaining reliable performance in consumer and industrial electronic devices.

Replacement Considerations

Direct substitutes include other manufacturers' 3.2x2.5mm 24MHz crystals with 12pF load capacitance and similar ESR ratings. Verify pin compatibility and mechanical dimensions before substitution. Cross-reference datasheets for thermal stability and frequency tolerance to ensure system performance remains unaffected.