QT49S-12.288MAGE-T

Overview

The QT49S-12.288MAGE-T is a surface-mount crystal oscillator manufactured by QST, operating at a nominal frequency of 12.288 MHz. It features a load capacitance of 12 pF and a frequency stability tolerance of ±30 ppm or ±50 ppm depending on the specific datasheet version. The component utilizes an HC-49/US package with SMD/SMT termination style. Physical dimensions are approximately 12.7 mm in length, 4.8 mm in width, and 3.8 mm in height. It operates within a temperature range of -40°C to +85°C.

Feature Summary

• Surface-mount design for automated assembly processes
• HC-49/US package form factor
• Wide industrial temperature operation capability

Applications

• Digital communication systems requiring precise clock signals
• Microcontroller clock sources
• Embedded system timing references

Procurement Notes

Verify the exact frequency stability specification (±30 ppm vs ±50 ppm) against the manufacturer's current datasheet, as conflicting data exists across distributor listings. Confirm the active status of this part number, as some sources indicate it may be discontinued or replaced by similar variants like the QT49S-12.288MAAJ-T. Ensure compatibility with the target circuit's load capacitance requirements before procurement.

Selection Notes

Select this component when a standard HC-49/US footprint is required in a surface-mount configuration. Consider the specific stability requirement; if tighter than ±50 ppm is needed, verify the ±30 ppm variant availability. Ensure the application environment stays within the specified -40°C to +85°C operational range. Compare against alternative manufacturers offering similar AT-cut crystals if supply chain constraints exist.

Part Context

This part belongs to the QT49S series of quartz crystals from QST. It serves as a frequency control element in electronic circuits, providing a stable oscillation frequency derived from the mechanical resonance of a piezoelectric crystal. It is distinct from the TXC Corporation AT-12.288MAGE-T, which shares similar electrical parameters but differs in manufacturer and potentially detailed specifications.

Replacement Considerations

QT49S-12.288MAAJ-T

FAQ

What is the physical package type of the QT49S-12.288MAGE-T?

It uses the HC-49/US package format adapted for surface-mount technology.

Is the frequency stability ±30 ppm or ±50 ppm?

Official documentation varies; some sources specify ±30 ppm while others list ±50 ppm. Consult the specific manufacturer datasheet for the guaranteed tolerance.