QT252S-12.000MDDB-T

Overview

The QT252S-12.000MDDB-T is a surface-mount quartz crystal manufactured by QST. It operates at a nominal frequency of 12 MHz with a load capacitance of 6 pF. The component provides a frequency stability of ±20 ppm across the commercial temperature range of -20°C to +70°C and ±20 ppm at 25°C. It utilizes a 4-SMD, No Lead package with dimensions of 2.5mm x 2.0mm.

Feature Summary

• Seam seal construction for environmental protection
• Compact 4-SMD no-lead surface mount design
• High frequency stability within specified temperature ranges

Applications

• General purpose clock signal generation
• Microcontroller system timing
• Consumer electronics timing circuits

Procurement Notes

Verify the specific suffix MDDB against official QST documentation to confirm the exact load capacitance and tolerance specifications. Ensure the requested quantity aligns with standard factory packaging limits. Confirm that the 2.5x2.0 mm footprint matches the target PCB layout requirements before finalizing procurement orders.

Selection Notes

Select this component when a 12 MHz reference with ±20 ppm stability is required in a compact form factor. Compare against variants offering different load capacitances or tighter tolerances if the application demands higher precision. Ensure the operating temperature range covers the intended environment.

Part Context

This part belongs to the QT252S series of seam seal crystals from QST. These components are designed for applications requiring reliable frequency control in small electronic devices. The series offers various frequency options and package sizes to suit different design constraints.

Replacement Considerations

Direct substitutes include other 12 MHz crystals with identical 2.5x2.0 mm dimensions and 6 pF load capacitance. Verify compatibility with existing circuit loading conditions before swapping.