QT252S-12.000MAAV-T

Overview

The QT252S-12.000MAAV-T is a surface-mount quartz crystal oscillator manufactured by QST. It operates at a fundamental frequency of 12 MHz with a load capacitance of 8 pF. The component features a 4-SMD, no-lead package with dimensions of 2.5 x 2.0 x 0.55 mm. Frequency stability is rated at ±30 ppm at 25°C and ±30 ppm over the operating temperature range of -20°C to +70°C. The equivalent series resistance (ESR) is specified as 100 ohms.

Feature Summary

• Seam seal construction for reliable performance
• Surface mount design for automated assembly
• Stable frequency output within specified thermal limits

Applications

• Consumer electronics timing circuits
• Industrial control systems
• Communication modules requiring 12 MHz reference

Procurement Notes

Verify the specific suffix AAV against the manufacturer's current datasheet to confirm active status and exact electrical tolerances. Ensure compatibility with reflow soldering profiles defined in the official documentation. Check for RoHS compliance markings if required by project specifications. Confirm availability through authorized distributors as supply levels may vary.

Selection Notes

Select this component when a 12 MHz reference with ±30 ppm stability is required in a compact 2.5x2.0 mm footprint. Consider the 8 pF load capacitance requirement for circuit design matching. Evaluate the -20°C to +70°C operating range against environmental conditions. Compare ESR values with other available options if drive level sensitivity is a concern.

Part Context

This part belongs to the QT252S series of seam seal crystals from QST. The series offers various frequencies and stability grades in a standardized small outline package. Variants differ by frequency, tolerance, and temperature range suffixes. This specific model targets general-purpose timing applications where moderate stability and low profile are prioritized.

Replacement Considerations

Direct substitutes include other 12 MHz crystals in 2.5x2.0 mm packages with similar electrical parameters. Verify pinout compatibility and mounting pad layout before substitution. Cross-reference with QST family members or industry-standard equivalents ensuring identical load capacitance and frequency stability ratings.