QT252S-27.120MEEV-T

Overview

The QT252S-27.120MEEV-T is a surface-mount crystal oscillator manufactured by QST, operating at a fundamental frequency of 27.12 MHz. It features an 8 pF load capacitance and maintains a frequency tolerance of ±10 ppm at 25°C, with a temperature stability of ±10 ppm across the -20°C to +70°C range. The component utilizes a 4-SMD, no-lead package with dimensions of 2.5 mm x 2.0 mm and a maximum seated height of 0.55 mm. Designed for reliability, it supports an operating temperature range from -40°C to +85°C and complies with RoHS standards.

Feature Summary

• Compact 2.5mm x 2.0mm surface-mount footprint suitable for space-constrained designs
• High frequency stability with ±10 ppm tolerance at reference temperature
• Wide industrial operating temperature range ensuring consistent performance
• Lead-free construction compliant with environmental regulations

Applications

• Clock generation for microcontrollers and digital signal processors
• Timing references in consumer electronics and home appliances
• Frequency sources for communication modules and IoT devices
• Industrial control systems requiring precise timing synchronization

Procurement Notes

Verify that the specific suffix EEV-T matches the required load capacitance and tolerance specifications for your circuit design. Confirm the tape and reel packaging format aligns with your automated assembly equipment capabilities. Ensure the manufacturer part number corresponds exactly to the 27.12 MHz variant to avoid frequency mismatches in critical timing applications.

Selection Notes

Select this component when a small form factor is required alongside moderate frequency stability. The 8 pF load capacitance must match the oscillator circuit requirements of the target host device. Consider the -40°C to +85°C range if the application operates in variable environmental conditions. Validate that the SMD package type is compatible with the PCB layout and soldering process used in production.

Part Context

This part belongs to the QT252S series of surface-mount crystals from QST. The series offers various frequencies and packages optimized for modern electronic assemblies. The 27.12 MHz frequency is commonly used in video processing and specific communication protocols. The model designation includes parameters for tolerance, load capacitance, and packaging style.

Replacement Considerations

Direct substitutes include other manufacturers' 27.12 MHz crystals in 2520-4P packages with identical 8 pF load capacitance and ±10 ppm tolerance. Verify pin compatibility and electrical characteristics before swapping. Cross-reference datasheets to ensure equivalent thermal and mechanical performance metrics are maintained.