QT49S-4.096MAAJ-T

Overview

The QT49S-4.096MAAJ-T is a surface-mount quartz crystal resonator manufactured by QST, designed for precision timing applications in electronic circuits. It operates at a nominal frequency of 4.096 MHz with a load capacitance of 18 pF. The component exhibits a frequency stability and resonator tolerance of ±30 ppm at 25°C, ensuring reliable performance across the specified operating temperature range of -20°C to +70°C. This SMD variant features compact body dimensions of 12.7 mm x 4.8 mm x 3.8 mm, facilitating automated assembly processes while maintaining RoHS compliance for environmentally safe integration.

Feature Summary

• Surface-mount design for automated PCB assembly
• High frequency stability within specified temperature range
• RoHS compliant construction

Applications

• Microcontroller clock sources
• Communication interface timing
• Digital signal processing circuits

Procurement Notes

Verify that the specific part number matches the required frequency and package dimensions before procurement. Confirm RoHS compliance status if environmental regulations apply to your manufacturing process. Ensure the load capacitance requirements of your circuit design align with the 18 pF specification provided in the datasheet to maintain accurate frequency operation.

Selection Notes

Select this component when a surface-mount quartz crystal is required for 4.096 MHz applications. Consider the ±30 ppm stability requirement against your system's timing accuracy needs. Evaluate the physical footprint constraints on the PCB layout to ensure compatibility with the 12.7x4.8mm package size.

Part Context

This model belongs to the QT49S series of surface-mount crystals from QST. The series offers various frequencies and package options for different timing requirements. The MA suffix typically denotes specific packaging or tolerance characteristics within the product line, distinguishing it from through-hole variants like the HC-49/U style found in other models.

Replacement Considerations

Compatible substitutes include the QT49S-4.096MAHJ-T, which shares similar specifications but may differ in minor packaging details. Verify exact dimensional tolerances and electrical parameters when cross-referencing with other manufacturers' equivalent surface-mount crystals.