QT49S-19.200MAHJ-T

Overview

The QT49S-19.200MAHJ-T is a surface-mount quartz crystal oscillator manufactured by QST, operating at a nominal frequency of 19.2 MHz. It utilizes an HC49 SMD package with physical dimensions of 12.7mm x 4.8mm x 3.8mm. The component features a load capacitance of 18pF and maintains a frequency stability and tolerance of ±30ppm across the specified temperature range. Designed for reliability, it operates within a temperature range of -40°C to +85°C, ensuring consistent performance in various electronic applications requiring precise timing signals.

Feature Summary

• Surface-mount design compatible with automated assembly processes
• High frequency stability of ±30ppm over extended temperature ranges
• HC49 form factor providing robust mechanical structure

Applications

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

Procurement Notes

Verify that the specific part number matches the required frequency and package type before ordering. Confirm compatibility with the target circuit's load capacitance requirements. Ensure storage conditions adhere to manufacturer guidelines to maintain component integrity. Check for any specific handling instructions related to surface-mount technology assembly processes.

Selection Notes

Select this component when a 19.2 MHz reference is required in a compact surface-mount configuration. Consider the ±30ppm stability specification against system timing accuracy needs. Evaluate the HC49 SMD footprint availability on the PCB layout. Compare operating temperature ranges with the intended environmental conditions of the final product application.

Part Context

This crystal belongs to the QT49S series, which offers various frequency options within the same physical package. The series is designed for general-purpose timing applications where space constraints necessitate surface-mount solutions. Similar parts in the series may differ only in resonant frequency while maintaining identical electrical characteristics and mechanical dimensions.

Replacement Considerations

Direct substitutes include other manufacturers' HC49 SMD crystals with matching 19.2 MHz frequency, 18pF load capacitance, and ±30ppm stability. Verify pin compatibility and mounting orientation when replacing. Ensure thermal specifications meet or exceed original requirements.