QT325S-31.250MAHE-T

Overview

The QT325S-31.250MAHE-T is a quartz crystal resonator manufactured by QST, designed for surface-mount applications. It operates at a nominal frequency of 31.25 MHz with a load capacitance of 12 pF and an equivalent series resistance (ESR) of 50 Ohms. The component utilizes a 4-SMD, no-lead package configuration. Frequency stability is rated at ±30 ppm at 25°C and ±30 ppm across the operating temperature range of -40°C to +85°C. This device is part of the QT325S series, offering reliable performance for timing circuits requiring precise clock signals.

Feature Summary

• Surface-mount design with no-lead SMD package for automated assembly
• High frequency stability within specified industrial temperature ranges
• Optimized electrical characteristics including defined ESR and load capacitance

Applications

• Clock signal generation in microprocessor systems
• Timing references for communication interfaces
• Frequency control in consumer electronic devices

Procurement Notes

Verify the specific manufacturer designation, as this part number appears associated with both QST and TXC Corporation in various listings. Confirm the exact package dimensions and pinout compatibility with your PCB footprint before ordering. Ensure the required frequency tolerance and temperature range meet your application's specifications. Check current availability status as distribution channels may vary.

Selection Notes

Select this component when a 31.25 MHz reference is required for SMD-based designs. Consider the 50 Ohm ESR and 12 pF load capacitance for oscillator circuit matching. Evaluate the -40°C to +85°C operating range against environmental conditions. Compare alternative packages if space constraints differ from the standard 3.2x2.5 mm form factor.

Part Context

This crystal belongs to the QT325S series, which includes various frequencies and tolerance options. Similar parts include QT325S-31.250MAAE-T and QT325S-31.250MAHE-T variants with different stability ratings. The series supports diverse timing needs across electronics sectors.

Replacement Considerations

QT325S-31.250MAAE-T offers similar physical dimensions but may have different stability specifications. Verify electrical parameters such as ESR and load capacitance match exactly. Cross-reference datasheets for pin compatibility and mounting requirements.