QT252S-12.000MEDV-T

Overview

The QT252S-12.000MEDV-T is a quartz crystal resonator manufactured by QST, designed for surface-mount applications. It operates at a fundamental frequency of 12 MHz with a load capacitance of 8 pF and an equivalent series resistance (ESR) of 150 Ohms. The component provides a frequency tolerance of ±10 ppm at 25°C and ±20 ppm across the operating temperature range of -20°C to +70°C. It utilizes a 4-SMD, No Lead package with dimensions of 2.5x2.0 mm, suitable for automated assembly processes in compact electronic designs.

Feature Summary

• Surface-mount design utilizing a 4-SMD no-lead package for efficient PCB integration
• Quartz crystal construction ensuring stable frequency generation
• Defined load capacitance and ESR specifications for circuit matching

Applications

• Microcontroller clock sources
• Communication module timing references
• Consumer electronics internal clocks

Procurement Notes

Verify the complete part number including suffixes to ensure correct tolerance and packaging specifications. Confirm that the required temperature range and load capacitance align with the target circuit design. Check manufacturer documentation for specific handling instructions regarding surface-mount components.

Selection Notes

Select this component when a 12 MHz reference is required in a small footprint. Ensure the application environment stays within the specified -20°C to +70°C range. Verify that the circuit can accommodate the 150 Ohm ESR and 8 pF load capacitance requirements for proper oscillation.

Part Context

This part belongs to the QT252S series of quartz crystals from QST. The series offers various frequency options and tolerances within a standardized 2.5x2.0 mm SMD package. It is intended for general-purpose timing applications where space constraints are critical.

Replacement Considerations

Substitute parts must match the 12 MHz frequency, 8 pF load capacitance, and 2.5x2.0 mm package dimensions. Verify that alternative suppliers offer comparable ESR values and frequency stability over the required temperature range.