QT325G-19.200MAAV-T

Overview

QT325G-19.200MAAV-T is a quartz crystal resonator manufactured by QST, designed for surface-mount applications. It operates at a fundamental frequency of 19.2 MHz with a frequency stability of ±30 ppm. The component features a load capacitance of 8 pF and an equivalent series resistance (ESR) typically specified within the QT325G series range. It utilizes a glass-sealed package in a 3.2 x 2.5 mm footprint with a maximum height of 0.8 mm. The device supports base harmonic operation and is suitable for environments ranging from -20°C to +70°C.

Feature Summary

• Glass-sealed construction for environmental durability
• Surface-mount design for automated assembly
• Fundamental mode operation at 19.2 MHz

Applications

• Microcontroller clock sources
• Communication module timing references
• Embedded system oscillators

Procurement Notes

Verify the specific load capacitance requirement against the target circuit design, as this variant specifies 8 pF. Confirm that the operating temperature range of -20°C to +70°C meets the application's thermal constraints. Ensure the 3.2 x 2.5 mm SMD footprint aligns with the PCB layout specifications. Check for RoHS compliance status if required by regulatory standards.

Selection Notes

Select this component when a compact 3.2 x 2.5 mm crystal is required for 19.2 MHz applications. The 8 pF load capacitance distinguishes it from other variants like the MAHJ version which uses 18 pF. Consider the ESR limits if driving circuit sensitivity is high. This part is suitable for general-purpose digital circuits requiring stable frequency generation in space-constrained designs.

Part Context

The QT325G series represents a line of miniature quartz crystals from QST. These components are widely used in consumer electronics and industrial controls due to their small form factor. The 19.2 MHz frequency is commonly utilized in USB interfaces and serial communication protocols where precise baud rate generation is necessary.

Replacement Considerations

Direct substitutes include QT325G-19.200MAHJ-T, though it requires 18 pF load capacitance instead of 8 pF. Other equivalents may exist but must be verified for identical frequency, package dimensions, and electrical parameters.