QT3C-32.768KDZY-T

Overview

The QT3C-32.768KDZY-T is a quartz crystal oscillator manufactured by QST, designed for surface-mount applications. It operates at a fundamental frequency of 32.768 kHz, commonly utilized in real-time clock circuits and low-power timing systems. The component features a compact 2-SMD no-lead package with dimensions of 3.20mm x 1.50mm x 0.75mm. It exhibits a frequency tolerance of ±20 ppm at 25°C and supports a load capacitance of 7pF. The device is rated for an operating temperature range of -40°C to +85°C, ensuring reliability across standard industrial environments.

Feature Summary

• Surface-mount design with no-lead construction for automated assembly compatibility
• Tuning fork quartz structure optimized for low power consumption
• Compact footprint suitable for space-constrained portable electronics

Applications

• Real-time clock (RTC) modules in consumer electronics
• Microcontroller system timing references
• Portable devices requiring precise timekeeping functions

Procurement Notes

Verify the manufacturer designation carefully, as this specific part number is associated with QST in distributor catalogs, though similar variants exist under TXC Corporation branding. Confirm the exact load capacitance and tolerance specifications against the latest official datasheet before integration. Ensure the package dimensions match the PCB footprint requirements. Check for any recent updates to the RoHS compliance status or material declarations. Cross-reference the ordering suffix to confirm the specific tolerance grade and packaging type intended for the application.

Selection Notes

Select this component when a 32.768 kHz reference is required for timekeeping applications with moderate stability needs. The ±20 ppm tolerance is sufficient for general-purpose RTCs but may not suit high-precision metrology. Consider the 7pF load capacitance requirement to ensure circuit resonance matches the crystal's specification. Evaluate the thermal performance within the -40°C to +85°C range against the operational environment. Compare alternative packages if board space allows for different form factors.

Part Context

This part belongs to the QT3C series of thin-film quartz crystals produced by QST. The series offers various frequency tolerances and load capacitance options to accommodate different circuit designs. The QT3C-32.768KDZY-T specifically denotes the 32.768 kHz frequency, D tolerance code, Z temperature range, and Y package style. These components are widely used in the electronics industry for cost-effective timing solutions.

Replacement Considerations

Direct substitutes include other manufacturers' 32.768 kHz crystals with identical 3.2x1.5mm SMD footprints and 7pF load capacitance. Verify that replacement parts maintain the same ±20 ppm tolerance and -40°C to +85°C operating range. Ensure the replacement component is RoHS compliant if required by the final product regulations.