QT325S-25.000METE-T

Overview

The QT325S-25.000METE-T is a quartz crystal resonator manufactured by QST, designed for surface-mount applications. It operates at a nominal frequency of 25 MHz with a frequency tolerance of ±10 ppm and a load capacitance of 12 pF. The component features an equivalent series resistance (ESR) of 50 Ohms and utilizes a 4-SMD, No Lead package with dimensions of 3.2 x 2.5 x 0.7 mm. It is constructed using seam seal technology and is suitable for operation within a temperature range of -30°C to +85°C.

Feature Summary

• Seam seal construction for enhanced environmental stability
• Surface-mount design compatible with automated assembly processes
• Low profile form factor optimized for space-constrained PCB layouts

Applications

• Microcontroller clock sources
• Communication module timing references
• Digital signal processing circuits

Procurement Notes

Verify the specific suffix METE against official QST documentation to confirm exact load capacitance and temperature range specifications. Ensure compatibility with the target circuit's load capacitance requirements before integration. Cross-reference datasheets from authorized distributors to validate current manufacturing status and availability constraints.

Selection Notes

Select this component when a 25 MHz reference is required in a compact SMD footprint. Consider the 12 pF load capacitance requirement for oscillator circuit design. Evaluate the ±10 ppm stability against system timing accuracy needs. Confirm that the 50 Ohm ESR aligns with the oscillator driver strength capabilities.

Part Context

This part belongs to the QT325S series of quartz crystals, characterized by small surface-mount packages. The series offers various frequency options and stability grades. The QT325S-25.000METE-T specifically addresses high-volume consumer electronics requiring reliable timing signals in minimal board space.

Replacement Considerations

Direct substitutes include other 25 MHz crystals with identical 3.2x2.5mm dimensions, 12pF load capacitance, and ±10ppm stability. Verify pinout and mechanical height compatibility. Check manufacturer-specific qualification standards if used in regulated industries.