QT325S-32.768MAAE-T

Overview

The QT325S-32.768MAAE-T is a quartz crystal resonator manufactured by QST Products, LLC. It operates at a nominal frequency of 32.768 MHz and utilizes a glass-sealed package with dimensions of 3.2 x 2.5 x 0.7 mm. The component features a load capacitance of 12 pF and a maximum series resistance of 50 Ohms. Frequency stability is rated at ±30 ppm at 25°C and ±30 ppm over the operating temperature range of -20°C to +70°C. It is supplied in tape and reel packaging for surface-mount assembly.

Feature Summary

• Glass-sealed construction for environmental protection
• Surface-mount design compatible with automated assembly
• Standard 32.768 MHz frequency output

Applications

• Real-time clock (RTC) circuits
• Timing circuits
• Embedded systems requiring precise timekeeping

Procurement Notes

Verify the specific suffix 'AAE' against the manufacturer's current datasheet to confirm package type and stability ratings. Ensure the required load capacitance matches the circuit design specifications. Confirm that the operating temperature range meets the application requirements before procurement.

Selection Notes

Select this component when a compact, glass-sealed crystal is required for low-frequency timing applications. Consider the ±30 ppm stability requirement and the 12 pF load capacitance compatibility with the host oscillator circuit. Evaluate the surface-mount form factor against available board space constraints.

Part Context

This part belongs to the QT325S series of quartz crystals from QST Products. The series offers various frequencies and stability options within a small 3.2x2.5 mm footprint. The 32.768 MHz variant is specifically optimized for binary division in digital clocks and microcontroller real-time functions.

Replacement Considerations

Cross-reference with other manufacturers offering 32.768 MHz glass-sealed SMD crystals with 12 pF load capacitance and ±30 ppm stability. Verify pinout compatibility and reflow soldering profiles before substitution.