QT161S-38.400MAAQ-T

Overview

The QT161S-38.400MAAQ-T is a surface-mount quartz crystal oscillator manufactured by QST. It operates at a fundamental frequency of 38.4 MHz with a load capacitance of 8 pF and an equivalent series resistance of 80 Ohms. The component features a compact 4-SMD, no-lead package with dimensions of 1.6 x 1.2 mm. Frequency stability is rated at ±30 ppm at 25°C and ±30 ppm over the operating temperature range of -20°C to +70°C.

Feature Summary

• Seam seal construction for environmental protection
• Surface-mount design for automated assembly
• High stability quartz resonator element

Applications

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

Procurement Notes

Verify the manufacturer designation carefully, as the QT161S series is produced by both TXC Corporation and QST. Ensure the specific suffix matches the required tolerance and temperature range specifications. Confirm RoHS compliance status through official documentation before integration into regulated products.

Selection Notes

Select this component when a 38.4 MHz reference is required in a minimal footprint. The 8 pF load capacitance must match the oscillator circuit design. Consider the ±30 ppm stability sufficient for standard digital interfaces where tighter tolerances are not mandated by the system architecture.

Part Context

This part belongs to the QT161S family of thin, low-profile crystals. The series offers various frequency options and tolerance grades. The 1.6x1.2 mm form factor allows placement on dense PCB layouts where space constraints limit larger packages.

Replacement Considerations

Direct substitutes include other manufacturers' 1.6x1.2mm 38.4MHz crystals with 8pF load and similar ESR. Verify pin compatibility and electrical parameters against the original datasheet requirements.