QT161S-38.400MAAY-T

Overview

The QT161S-38.400MAAY-T is a surface-mount crystal oscillator manufactured by QST, operating at a nominal frequency of 38.4 MHz. It features a compact SMD package with dimensions of 1.6mm x 1.2mm and a height of 0.35mm. The component exhibits a frequency stability of ±30 ppm within the -20°C to +70°C temperature range. Key electrical parameters include a load capacitance of 7 pF and an equivalent series resistance (ESR) of 80 Ohms. This device is designed for applications requiring precise timing signals in space-constrained electronic circuits.

Feature Summary

• Compact surface-mount design suitable for high-density PCB layouts
• Provides stable oscillation at 38.4 MHz with defined thermal performance
• Integrated thermistor characteristics for temperature sensing applications

Applications

• Microcontroller clock sources
• Communication module timing references
• Portable electronic devices requiring small form factors

Procurement Notes

Verify the specific suffix MAAY against official QST documentation to confirm the exact temperature range and stability class. Ensure compatibility with reflow soldering profiles specified in the datasheet. Confirm that the 7 pF load capacitance matches the target circuit design requirements before integration.

Selection Notes

Select this component when a 38.4 MHz reference is required in a 1.6x1.2mm footprint. The ±30 ppm stability over -20°C to +70°C suits general consumer electronics. Consider alternative suffixes if wider industrial temperature ranges or tighter frequency tolerances are necessary for the specific application environment.

Part Context

This part belongs to the QT161S series of crystals from QST. The series offers various stability and temperature options denoted by suffix letters. The QT161S model specifically targets applications needing reliable timing in compact packages, distinguishing it from larger through-hole or standard SMD crystals.

Replacement Considerations

Direct substitutes may include other 38.4 MHz crystals in 1612 packages with similar ESR and load capacitance. Verify pinout and electrical equivalence carefully. Cross-reference with CTS TSX161XIK038M40000 for dimensional compatibility, though electrical specs differ.