QT532S-30.000MAAJ-T

Overview

The QST QT532S-30.000MAAJ-T is a surface-mount quartz crystal oscillator designed for precise frequency generation in electronic circuits. It operates at a nominal frequency of 30 MHz with a frequency stability of ±30 ppm at 25°C and across the operating temperature range of -20°C to +70°C. The component features a load capacitance of 18 pF and an equivalent series resistance (ESR) of 40 Ohms. It utilizes a 4-SMD, No Lead package with physical dimensions of 5.0 mm x 3.2 mm x 0.9 mm, ensuring compatibility with standard automated assembly processes.

Feature Summary

• Provides stable 30 MHz oscillation with ±30 ppm frequency tolerance
• Compact 4-SMD no-lead package suitable for space-constrained designs
• Operates reliably within extended industrial temperature ranges

Applications

• Clock signal generation for microcontrollers and digital logic
• Communication interface timing references
• Embedded system oscillator circuits

Procurement Notes

Verify the complete part number including suffixes to ensure correct frequency and packaging specifications. Confirm that the supplier provides official datasheets from QST or authorized distributors. Check for RoHS compliance status if required by project regulations. Ensure storage conditions align with manufacturer recommendations to maintain component integrity prior to soldering.

Selection Notes

Select this component when a 30 MHz reference is required with moderate stability needs. The 18 pF load capacitance must match the circuit design requirements. Consider the ±30 ppm stability limit against application sensitivity. The SMD form factor supports high-volume manufacturing. Evaluate thermal performance against the specified -20°C to +70°C operational range.

Part Context

This crystal belongs to the QT532S series from QST, which offers various frequencies in a standardized small outline package. The series is designed for general-purpose timing applications where size and cost efficiency are prioritized alongside adequate frequency accuracy. Other variants in the series differ primarily in resonant frequency while maintaining similar electrical characteristics.

Replacement Considerations

Direct substitutes include other 30 MHz crystals with identical 18 pF load capacitance and comparable ESR values. Verify pinout compatibility and mechanical footprint dimensions before substitution. Cross-reference with QST's official replacement guide for validated alternatives.