QT325S-48.000MAHV-T

Overview

The QT325S-48.000MAHV-T is a surface-mount quartz crystal resonator manufactured by QST, designed for precise frequency control in electronic circuits. It operates at a nominal frequency of 48 MHz with a load capacitance of 8 pF and an equivalent series resistance (ESR) of 50 Ohms. The component features a frequency tolerance of ±30 ppm and maintains stability within ±30 ppm across the operating temperature range of -40°C to +85°C. Housed in a compact 4-SMD, No Lead package with dimensions of 3.2 x 2.5 x 0.7 mm, it offers reliable performance for high-frequency applications requiring stable clock signals.

Feature Summary

• Seam seal construction ensures long-term frequency stability and environmental robustness.
• Compact SMD form factor facilitates automated assembly and space-constrained PCB layouts.
• Wide operating temperature range supports functionality in demanding thermal conditions.

Applications

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

Procurement Notes

Verify the specific suffix HV against the manufacturer's official datasheet to confirm pin configuration and loading capacitance requirements. Ensure the selected variant matches the target circuit's load capacitance specifications precisely. Cross-reference the part number with authorized distributors to confirm current availability and authenticity before finalizing procurement orders.

Selection Notes

Select this component when a 48 MHz reference is required with tight frequency tolerance and wide temperature stability. Consider the 8 pF load capacitance requirement for oscillator circuit design. Evaluate the 4-SMD package size against available board space constraints. Compare ESR values with oscillator driver strength capabilities to ensure proper startup conditions.

Part Context

This part belongs to the QT325S series of seam-seal crystals from QST, characterized by small footprint and high reliability. The series typically includes various frequencies and load capacitances tailored for consumer electronics and industrial applications. The HV suffix denotes specific packaging or electrical characteristics defined by the manufacturer.

Replacement Considerations

Direct substitutes include other 48 MHz crystals with identical 8 pF load capacitance and 4-SMD no-lead packages. Verify that alternative parts match the ±30 ppm stability and -40°C to +85°C temperature range. Check compatibility with existing oscillator circuits regarding ESR and drive level specifications.