QT532G-14.7456MBBK-T

Overview

The QT532G-14.7456MBBK-T is a quartz crystal resonator manufactured by QST, designed for surface-mount applications. It operates at a fundamental frequency of 14.7456 MHz with a frequency stability of ±50 ppm at 25°C and ±50 ppm over the temperature range of -20°C to +70°C. The component features a load capacitance of 20 pF and an equivalent series resistance (ESR) of 50 Ohms. It utilizes a glass-sealed package construction within a 2-SMD, no-lead form factor measuring 5.0 mm x 3.2 mm.

Feature Summary

• Glass-sealed quartz crystal construction for environmental stability
• Surface-mount design compatible with automated assembly processes
• Defined load capacitance and ESR specifications for circuit integration

Applications

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

Procurement Notes

Verify the specific suffix 'BBK' against official QST documentation to confirm the exact temperature range and tolerance class, as suffixes define critical electrical parameters. Ensure the ordering part number matches the required frequency stability and package dimensions specified in the manufacturer's datasheet before procurement.

Selection Notes

Select this component when a 14.7456 MHz reference is required with ±50 ppm stability across a -20°C to +70°C operating range. Consider the 20 pF load capacitance requirement for matching external circuit capacitors. Evaluate the 50 Ohm ESR against the oscillator circuit's drive level constraints to ensure proper startup and longevity.

Part Context

This part belongs to the QT532G series of surface-mount crystals from QST. The series offers various frequencies and stability grades in a standardized 5.0x3.2 mm footprint. This specific model provides a common video-standard frequency suitable for consumer electronics and industrial control systems requiring precise timing.

Replacement Considerations

Cross-reference with other manufacturers offering 14.7456 MHz crystals in 5.0x3.2 mm SMD packages with 20 pF load capacitance. Verify that substitute parts meet or exceed the ±50 ppm stability and 50 Ohm ESR requirements while maintaining compatibility with the host oscillator circuit.