QT216S-25.000MEIJ-T

Overview

The QT216S-25.000MEIJ-T is a quartz crystal resonator manufactured by QST, designed for surface-mount applications. It operates at a fundamental frequency of 25 MHz and utilizes a 4-SMD, No Lead package with dimensions of 2.0x1.6 mm. The component exhibits a frequency tolerance of ±10ppm at 25°C and a stability of ±20ppm across the -20°C to 70°C operating temperature range. Key electrical parameters include a load capacitance of 18pF and an equivalent series resistance (ESR) of 90 Ohms.

Feature Summary

• Surface-mount design in a compact 4-SMD no-lead package
• High frequency stability within specified industrial temperature ranges
• Fundamental mode operation for precise timing control

Applications

• Clock signal generation for microprocessors and microcontrollers
• Timing references for communication interfaces such as UART and SPI
• Frequency standards for consumer electronic devices

Procurement Notes

Verify the specific ordering suffix MEIJ against official QST documentation to confirm the exact load capacitance and tolerance specifications. Ensure that the 4-SMD no-lead package type matches the target PCB footprint requirements. Confirm RoHS compliance status through the manufacturer's current datasheet before finalizing procurement plans.

Selection Notes

Select this component when a 25 MHz fundamental frequency is required with tight initial tolerance. The 18pF load capacitance must align with the oscillator circuit design. Consider the 90 Ohm ESR limit for power consumption constraints. The wide temperature stability makes it suitable for environments ranging from -20°C to 70°C.

Part Context

This part belongs to the QT216S series of quartz crystals from QST. These components are engineered for general-purpose timing applications requiring small form factors. The series offers various frequency options and package configurations to support diverse embedded system designs.

Replacement Considerations

Cross-reference with other 25 MHz SMD crystals having identical 4-SMD no-lead footprints. Verify matching load capacitance and ESR values to ensure circuit compatibility without modification.