QT49S-20.000MAGE-T

Overview

The QST QT49S-20.000MAGE-T is a 20 MHz fundamental mode crystal resonator designed for surface mount applications. It features a frequency tolerance of ±30 ppm at 25°C and stability of ±50 ppm over the operating temperature range of -40°C to +85°C. The component utilizes a 12 pF load capacitance and exhibits an equivalent series resistance (ESR) of 30 Ohms. Packaged in a Tape & Reel format, it meets RoHS compliance standards and is classified under ECCN EAR99.

Feature Summary

• Fundamental mode operation for precise frequency generation
• Automotive-grade reliability with AEC-Q200 qualification
• Surface mount design compatible with automated assembly processes

Applications

• Automotive electronic control units
• Microcontroller clock sources
• Communication interface circuits

Procurement Notes

Verify the specific suffix 'MAGE' against official QST documentation to confirm the exact tolerance and temperature range specifications. Ensure that the Tape & Reel packaging aligns with your manufacturing equipment requirements. Cross-reference the manufacturer part number with authorized distributors to validate authenticity and current production status before finalizing procurement orders.

Selection Notes

Select this component when a 20 MHz reference signal is required for automotive or industrial applications demanding high stability. The ±30 ppm initial tolerance suits precision timing needs. Consider the 30 Ohm ESR value for oscillator circuit compatibility. The SMD package facilitates compact board designs where space constraints are critical compared to through-hole alternatives.

Part Context

This crystal belongs to the QT49S series from QST, which focuses on surface mount resonators. The series supports various frequencies and tolerances, catering to diverse electronic design requirements. The specific model integrates standard electrical parameters within a compact footprint, serving as a common timing element in modern embedded systems and consumer electronics.

Replacement Considerations

Direct substitutes include other 20 MHz SMD crystals with matching 12 pF load capacitance and similar ESR values. Verify pinout compatibility and physical dimensions if replacing with components from different manufacturers. Ensure alternative parts meet the same temperature stability and automotive qualification standards if used in regulated environments.