QT49S-54.000MBBK-T

Overview

The QT49S-54.000MBBK-T is a surface-mount crystal oscillator manufactured by QST, operating at a nominal frequency of 54 MHz. It utilizes an HC-49/US package and features a load capacitance of 20 pF. The component exhibits a frequency stability of ±50 ppm across the operating temperature range of -20°C to +70°C. Equivalent series resistance (ESR) is specified at 60 Ohms. This device is designed for precision timing applications requiring reliable frequency generation in compact electronic systems.

Feature Summary

• Resistance-welded metal can construction for enhanced durability
• Surface mount design compatible with automated assembly processes
• Stable frequency performance within specified thermal limits

Applications

• Digital system clock generation
• Microcontroller timing circuits
• Communication module synchronization

Procurement Notes

Verify part authenticity through authorized distributors. Confirm package type matches PCB footprint requirements. Ensure storage conditions align with manufacturer specifications to maintain frequency accuracy. Cross-reference datasheet parameters against design constraints before procurement.

Selection Notes

Select this component when a 54 MHz surface-mount crystal is required. Verify load capacitance compatibility with host circuitry. Check temperature range suitability for the intended environment. Confirm ESR values meet oscillator driver capabilities.

Part Context

This model belongs to the QT49S series of surface-mount crystals. The series offers various frequencies and stability options. The HC-49/US package provides a standardized form factor for surface mounting. QST manufactures these components for industrial and consumer electronics applications.

Replacement Considerations

Direct substitutes include other 54 MHz HC-49/US SMD crystals with matching 20 pF load capacitance and ±50 ppm stability. Verify pinout compatibility and thermal characteristics. Consult manufacturer cross-reference lists for approved alternatives.