QT161S-25.000MEII-T

Overview

The QST QT161S-25.000MEII-T is a ceramic package crystal oscillator operating at a fundamental frequency of 25.000 MHz. It utilizes an AT-cut quartz resonator element housed in a standard 4-pin metal can configuration, specifically the QT161S outline. The device is designed for general-purpose clock generation applications requiring stable frequency output with low phase noise characteristics typical of fundamental mode crystals.

Feature Summary

• Fundamental mode AT-cut quartz resonator technology
• Standard 4-pin metal can ceramic package construction
• Designed for stable clock signal generation

Applications

• General purpose clock generation circuits
• Microprocessor reset timing
• Communication equipment reference clocks

Procurement Notes

Verify the complete part number including suffixes against official QST documentation to ensure correct packaging and tolerance specifications. Confirm that the specified load capacitance matches your circuit design requirements before procurement. Check for any specific handling instructions related to the metal can package.

Selection Notes

Select this component when a fundamental mode crystal is required for lower power consumption compared to overtone modes. Ensure the application environment temperature range aligns with the standard commercial or industrial ratings defined in the datasheet. Verify pin compatibility with existing PCB footprints.

Part Context

This model belongs to QST's line of fundamental frequency crystal oscillators. It represents a standard offering for applications where size constraints are moderate but stability is critical. The QT161S series provides a reliable solution for basic timing needs in consumer and industrial electronics.

Replacement Considerations

Consult official QST substitution lists for direct equivalents. Cross-reference with other manufacturers' 4-pin metal can crystals ensuring identical frequency and load capacitance specifications. Verify mechanical dimensions match the target footprint.