QT161S-38.400MAAV-T

Overview

The QT161S-38.400MAAV-T is a quartz crystal resonator manufactured by QST, designed for surface-mount applications. It operates at a nominal frequency of 38.4 MHz with a tolerance of ±30 ppm at 25°C and ±30 ppm over the -20°C to +70°C temperature range. The component features an 8 pF load capacitance and an equivalent series resistance (ESR) of 80 Ohms maximum. It utilizes a seam seal package construction with dimensions of 1.6 x 1.2 mm and offers a four-pad no-lead SMD configuration.

Feature Summary

• Seam seal construction for environmental stability
• Four-pad no-lead surface mount design
• Compact 1.6 x 1.2 mm footprint

Applications

• Clock signal generation in digital circuits
• Microcontroller oscillator circuits
• Communication module timing references

Procurement Notes

Verify the specific suffix 'AAV' against the manufacturer's current datasheet to confirm the exact tolerance and temperature stability specifications. Ensure the required load capacitance matches the circuit design requirements. Confirm that the 80 Ohm ESR limit is compatible with the oscillator circuit's drive level constraints before finalizing procurement.

Selection Notes

Select this component when a compact 1.6x1.2mm crystal is required for 38.4 MHz applications. The ±30 ppm tolerance suits general-purpose timing needs rather than high-precision synchronization. Verify that the 8pF load capacitance aligns with the host oscillator's specified load requirements to ensure accurate frequency operation.

Part Context

This part belongs to the QT161S series of miniature quartz crystals. The series is characterized by small physical dimensions suitable for space-constrained PCB layouts. The seam seal technology provides hermetic sealing to protect the quartz element from moisture and contaminants, ensuring long-term frequency stability in standard operating environments.

Replacement Considerations

Direct replacements must match the 38.4 MHz frequency, 1.6x1.2mm package, and 8pF load capacitance. Verify that substitute components offer equal or better ESR and tolerance specifications. Cross-reference pinout compatibility if the replacement uses a different pad configuration.