QT216S-20.000MAAV-T

Overview

The QT216S-20.000MAAV-T is a quartz crystal resonator manufactured by QST Products, LLC. It operates at a nominal frequency of 20 MHz with a load capacitance of 8 pF and a frequency tolerance of ±30 ppm. The component features an equivalent series resistance (ESR) of 90 Ohms and utilizes a 4-SMD, no lead package with dimensions of 2.0 x 1.6 mm. It is designed for surface mount technology applications.

Feature Summary

• Surface mount quartz crystal resonator
• Seam seal construction for stability
• Low profile 4-pad SMD package

Applications

• Embedded communication systems
• Microcontroller clock sources
• General purpose timing circuits

Procurement Notes

Verify the manufacturer designation as QST Products, LLC, distinct from other brands using similar naming conventions. Confirm the specific ESR value of 90 Ohms and package dimensions against official datasheets prior to integration. Ensure compatibility with the target circuit's load capacitance requirements of 8 pF.

Selection Notes

Select this component when a 20 MHz reference signal is required in space-constrained designs. The 2.0 x 1.6 mm footprint suits high-density PCB layouts. Evaluate the ±30 ppm tolerance against system timing accuracy needs. Consider the 90 Ohm ESR impact on oscillator startup conditions.

Part Context

This part belongs to the QT216S series of seam seal crystals from QST. It shares design characteristics with variants like the QT216S-16.000MAAV-T but differs in frequency and potentially internal parameters. The series targets general consumer and industrial electronics requiring reliable clock generation.

Replacement Considerations

Direct substitutes include the 7A-20.000MAAV-T from TXC Corporation, which offers identical 20 MHz frequency and 8 pF load capacitance but differs in ESR (50 Ohms vs 90 Ohms) and physical dimensions (5x3.2 mm). Verify oscillator circuit compatibility before substitution.