QT252S-40.000M-GPR

Overview

The QT252S-40.000M-GPR is a quartz crystal resonator manufactured by QST, designed for surface-mount applications. It features a compact 2.5x2.0 mm package with a seam seal construction and four pads. The device operates at a fundamental frequency of 40.000 MHz with a load capacitance of 10 pF. Frequency stability is specified at +/-20 ppm across the commercial temperature range of -20°C to +70°C. The component utilizes ceramic packaging and is RoHS compliant, ensuring environmental safety standards are met for modern electronics manufacturing.

Feature Summary

• Seam seal construction for enhanced environmental protection
• Compact 2.5x2.0 mm surface-mount footprint
• Four-pad ceramic design for reliable soldering
• RoHS compliant material composition

Applications

• Automotive body electronics and lighting systems
• Industrial control equipment timing circuits
• Medical device clock generation
• Personal electronics and consumer gadgets

Procurement Notes

Verify the manufacturer designation carefully, as the QT252S series is produced by multiple vendors including TXC Corporation and QST Products. Ensure the specific suffix matches the required stability and temperature range specifications. Confirm RoHS compliance status through official documentation before integration into regulated assemblies.

Selection Notes

Select this component when a 40 MHz reference signal is required in space-constrained designs. The 2.5x2.0 mm package offers a balance between size and performance. Consider the +/-20 ppm stability requirement against system timing tolerances. Verify that the 10 pF load capacitance aligns with the host oscillator circuit requirements.

Part Context

This part belongs to the QT252S family of surface-mount quartz crystals. The series includes various frequencies and stability grades, such as the 24 MHz and 48 MHz variants from TXC. The QT252S designation generally indicates a 2.5x2.0 mm seam-seal package. Different manufacturers may offer similar form factors with varying electrical parameters.

Replacement Considerations

Direct substitutes include other 40 MHz crystals in the same 2.5x2.0 mm package with equivalent +/-20 ppm stability. Check compatibility with existing PCB footprints and reflow profiles. Alternative sources may exist from different manufacturers offering identical mechanical dimensions.