QT3C-32.768KDZC-T

Overview

The QT3C-32.768KDZC-T is a fundamental quartz crystal oscillator manufactured by QST Products LLC, designed for surface-mount applications. It operates at a nominal frequency of 32.768 kHz with a load capacitance of 9 pF and an equivalent series resistance (ESR) of 70 kOhms. The component features a frequency tolerance of ±20 ppm at 25°C and supports an operating temperature range from -40°C to +85°C. The physical package dimensions are specified as 3.2 mm in length, 1.5 mm in width, and 0.75 mm in height, utilizing a lead-free SMD configuration suitable for automated assembly processes.

Feature Summary

• Fundamental mode quartz crystal construction for stable timing reference
• Surface-mount design with compact 3.2x1.5mm footprint
• Lead-free compliant manufacturing process

Applications

• Real-time clock circuits in consumer electronics
• Microcontroller system oscillators
• Low-power embedded device timing references

Procurement Notes

Verify the manufacturer designation carefully, as similar part numbers exist across TXC Corporation and QST Products LLC. Confirm that the specific suffix KDZC corresponds to the 9pF load capacitance and 70kOhm ESR specifications required by your circuit design. Ensure the selected variant matches the 3.2x1.5x0.75mm package dimensions rather than alternative thicknesses found in related product lines.

Selection Notes

Select this component when a 32.768 kHz fundamental frequency is required with a 9pF load capacitance constraint. The ±20ppm tolerance suits general-purpose timing applications where high precision is not critical. Consider the 70kOhm ESR value for oscillator circuit stability calculations. Verify compatibility with the -40°C to +85°C industrial temperature range if deployed in variable environmental conditions.

Part Context

This crystal belongs to the QT3C series of surface-mount quartz oscillators. It shares the standard 32.768 kHz frequency common to real-time clock applications. Variations within the series typically differ in load capacitance, ESR values, or physical package thickness. This specific model represents the 9pF load capacitance variant with a 0.75mm profile.

Replacement Considerations

QT3CD-32.768KDZC-T offers identical electrical parameters but utilizes a 0.9mm package height instead of 0.75mm. QT3C-32.768KDZF-T provides a 12.5pF load capacitance which requires circuit modification. Cross-reference with TXC Corporation equivalents only if package dimensions and electrical specs match exactly.