QT161S-37.400MEII-T

Overview

The QST QT161S-37.400MEII-T is a surface-mount quartz crystal resonator operating at a fundamental frequency of 37.4 MHz. It features a tolerance of ±10 ppm within the -20°C to +70°C temperature range, as indicated by the 'E' suffix in the part number. The device utilizes an 8 pF load capacitance and exhibits a maximum series resistance of 80 Ohms. It is housed in a compact 4-SMD, No Lead package, designed for automated assembly processes in electronic circuits requiring precise timing references.

Feature Summary

• Provides stable oscillation with high frequency accuracy
• Designed for surface-mount technology integration
• Operates reliably within standard industrial temperature limits

Applications

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

Procurement Notes

Verify the complete part number against official QST documentation to ensure the specific tolerance and temperature range match your design requirements. Confirm that the 4-SMD no-lead package dimensions align with your PCB footprint. Check for any recent updates to the datasheet regarding material compliance or recommended soldering profiles to guarantee reliable manufacturing outcomes.

Selection Notes

Select this component when a 37.4 MHz reference with ±10 ppm stability is required for industrial environments. Ensure the circuit design supports an 8 pF load capacitance to maintain frequency accuracy. Compare the 80 Ohm series resistance against your oscillator circuit's drive level specifications to prevent over-driving the crystal and potential frequency drift or damage during operation.

Part Context

This component belongs to the QT161S series of quartz crystals manufactured by QST. The series offers various frequency options and tolerance grades, distinguished by suffix letters indicating performance characteristics. This specific model targets applications needing a balance between size constraints and moderate precision timing standards.

Replacement Considerations

Direct substitutes must match the 37.4 MHz frequency, ±10 ppm tolerance, 8 pF load capacitance, and 4-SMD no-lead package. Verify equivalent series resistance and drive level specifications from alternative manufacturers to ensure electrical compatibility without redesigning the surrounding oscillator circuitry.