QT325S-54.000MEIV-T

Overview

The QST QT325S-54.000MEIV-T is a surface-mount quartz crystal resonator operating at a fundamental frequency of 54 MHz. It features a compact 3.2 x 2.5 mm package with glass seal construction. The component exhibits a nominal load capacitance of 8 pF and an equivalent series resistance (ESR) of 50 ohms. Frequency tolerance is specified at ±10 ppm at 25°C, while overall frequency stability is rated at ±20 ppm across the operating temperature range of -40°C to +85°C.

Feature Summary

• Glass-sealed construction for enhanced environmental stability
• Compact 3.2x2.5mm SMD footprint suitable for space-constrained designs
• High frequency stability within industrial temperature ranges

Applications

• Microcontroller clock sources
• Communication module timing references
• Industrial control system oscillators

Procurement Notes

Verify the specific suffix MEIV-T against official QST documentation to confirm the exact frequency tolerance and temperature range specifications. Ensure compatibility with reflow soldering profiles defined in the manufacturer's datasheet. Confirm that the 8pF load capacitance matches the host circuit requirements to maintain accurate frequency performance.

Selection Notes

Select this component when a 54 MHz reference is required in a small form factor. The 8pF load capacitance dictates compatibility with specific oscillator circuits. The ±10ppm initial tolerance ensures precision for timing-sensitive applications. Verify that the 50Ω ESR aligns with the driving circuit's capability to sustain oscillation reliably.

Part Context

This part belongs to the QT325S series of surface-mount crystals from QST. The series offers various frequencies and tolerances within a standardized 3.2x2.5mm package. The MEIV-T suffix indicates specific stability and temperature characteristics distinct from other variants in the same physical package family.

Replacement Considerations

Direct substitutes must match the 54MHz frequency, 8pF load capacitance, and 3.2x2.5mm dimensions. Cross-reference with other manufacturers' 3225-sized crystals offering similar ±10ppm tolerance and industrial temperature ratings to ensure functional equivalence.