QT161S-40.000MAAV-T

Overview

The QT161S-40.000MAAV-T is a quartz crystal resonator manufactured by QST Products, LLC. It operates at a fundamental frequency of 40 MHz with a load capacitance of 8 pF and a maximum equivalent series resistance of 80 Ohms. The component features a surface-mount package measuring 1.6 x 1.2 x 0.35 mm in a 4-SMD, No Lead configuration. Frequency stability is rated at ±30 ppm across the operating temperature range of -20°C to +70°C.

Feature Summary

• Surface-mount design with a compact 4-SMD, No Lead footprint for automated assembly
• Quartz resonator providing stable oscillation at 40 MHz
• Operational reliability within an industrial temperature range of -20°C to +70°C

Applications

• Clock signal generation for microcontrollers and processors
• Timing references in communication modules
• Frequency control circuits in consumer electronics

Procurement Notes

Verify the manufacturer designation as QST Products, LLC, distinct from other vendors using similar part numbering conventions. Confirm the specific suffix 'MAAV-T' aligns with the required 8 pF load capacitance and ±30 ppm stability specifications. Ensure the package dimensions match the 1.6 x 1.2 x 0.35 mm requirement for PCB layout compatibility. Cross-reference the datasheet for any updates on RoHS compliance or material declarations prior to finalizing procurement orders.

Selection Notes

Select this component when a 40 MHz reference is required for space-constrained designs utilizing SMD assembly processes. The 8 pF load capacitance must match the oscillator circuit requirements specified in the host device datasheet. Consider the ±30 ppm tolerance if higher precision is not critical for the application timing budget. Evaluate the 80 Ohm ESR limit against the oscillator amplifier's drive level capabilities to ensure proper startup and sustained operation.

Part Context

This crystal belongs to the QT161S series, characterized by small form factor surface-mount packaging suitable for high-density board layouts. The series typically offers standard frequencies like 40 MHz and 48 MHz with varying stability grades. Components in this family are designed for general-purpose timing applications where moderate stability suffices.

Replacement Considerations

Direct substitutes include the QT161S-40.000MEEQ-T from TXC Corporation, which shares the same 40 MHz frequency but differs in stability ratings and package details. Other variants such as QT161S-48.000MAAV-T operate at different frequencies and are not electrically interchangeable. Verify pinout and electrical parameters before swapping manufacturers.