QT49-14.7456MAAJ-B

Overview

The QT49-14.7456MAAJ-B is a quartz crystal resonator manufactured by QST, designed for through-hole mounting in the HC-49/US package. It operates at a fundamental frequency of 14.7456 MHz with a load capacitance of 18 pF and a frequency tolerance of ±30 ppm. The component supports an operating temperature range from -20°C to +70°C.

Feature Summary

• Utilizes HC-49/US through-hole package for standard PCB integration
• Provides stable oscillation at 14.7456 MHz with ±30 ppm tolerance
• Compatible with 18 pF load capacitance requirements

Applications

• Microcontroller clock sources
• Communication interface timing circuits
• General-purpose oscillator designs

Procurement Notes

Verify the specific part number against manufacturer documentation to ensure compatibility with circuit load capacitance and temperature requirements. Confirm that the HC-49/US form factor matches the target PCB footprint and that the ±30 ppm stability meets system timing accuracy specifications before finalizing procurement.

Selection Notes

Select this component when a standard through-hole crystal is required for 14.7456 MHz applications. Ensure the design accommodates the 18 pF load capacitance and verify that the -20°C to +70°C operating range satisfies environmental conditions. Compare against other QT49 variants if different frequencies or tighter tolerances are needed.

Part Context

This part belongs to the QT49 series of quartz crystals from QST, characterized by the HC-49/US package and through-hole construction. The series offers various frequency options with consistent ±30 ppm tolerance and 18 pF load capacitance, serving as a common solution for basic timing needs in consumer and industrial electronics.

Replacement Considerations

Direct substitutes include other QT49 series parts with identical package and electrical characteristics but different frequencies, such as QT49-11.0592MAAJ-B or QT49-20.000MAAJ-B, provided the frequency difference is acceptable for the application.