QT161S-37.400MDDE-T

Overview

The QT161S-37.400MDDE-T is a surface-mount quartz crystal resonator manufactured by QST, operating at a fundamental frequency of 37.4 MHz. It features a load capacitance of 12 pF and an equivalent series resistance (ESR) of 80 Ohms. The component exhibits a frequency tolerance of ±20 ppm across the specified temperature range. It utilizes a 4-SMD, no-lead package with dimensions of 1.6 x 1.2 mm.

Feature Summary

• Surface-mount design for automated assembly
• Stable frequency output at 37.4 MHz
• Compact footprint suitable for space-constrained layouts

Applications

• Clock signal generation in microcontroller circuits
• Timing references for communication interfaces
• Oscillator circuits in consumer electronics

Procurement Notes

Verify the specific suffix MDDE against official QST documentation to confirm the ±20 ppm tolerance and 12 pF load capacitance specifications. Ensure the ordering part number matches the required temperature stability and package type before procurement to avoid functional mismatches in timing-critical designs.

Selection Notes

Select this component when a 37.4 MHz reference is required with moderate stability. The 12 pF load capacitance must match the oscillator circuit requirements. Consider the 80 Ohm ESR for drive level sensitivity. Verify that the 1.6x1.2 mm package fits the PCB land pattern constraints.

Part Context

This part belongs to the QT161S series of thin-film or bulk acoustic wave crystals designed for SMD applications. The series offers various frequency and tolerance options, with the MDDE suffix denoting specific performance characteristics including ±20 ppm tolerance and 12 pF load capacitance.

Replacement Considerations

Direct substitutes may include other 37.4 MHz crystals with identical 12 pF load capacitance and similar ESR values. Verify package dimensions and pin configuration compatibility. Cross-reference with manufacturer datasheets for electrical equivalence.