QT3C-32.768KDZF-T

Overview

The QT3C-32.768KDZF-T is a parallel fundamental quartz crystal manufactured by QST. It operates at a nominal frequency of 32.768 kHz with a tolerance of ±20 ppm at 25°C. The component utilizes a load capacitance of 12.5 pF and features a series resistance of 70 kOhms. It is housed in a surface-mount package measuring 3.2 mm x 1.5 mm x 0.75 mm. The device supports an operating temperature range from -40°C to +85°C and complies with RoHS standards.

Feature Summary

• Fundamental mode parallel resonance quartz crystal design
• Surface-mount construction for automated assembly
• RoHS compliant lead-free manufacturing process

Applications

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

Procurement Notes

Verify the manufacturer designation, as this part number appears associated with both TXC Corporation and QST across different distributor listings. Confirm the specific datasheet version and electrical parameters match the required application specifications before procurement. Ensure the ordering suffix corresponds to the correct packaging and tolerance requirements.

Selection Notes

Select this component for applications requiring a standard 32.768 kHz reference frequency with moderate stability. The 12.5 pF load capacitance must align with the oscillator circuit design. Consider the 70 kOhm series resistance for drive level limitations. The wide temperature range suits general commercial environments.

Part Context

This crystal belongs to the QT3C series of low-profile surface-mount timing devices. The series offers various frequency options and package sizes tailored for compact electronic designs. The specific model provides a balance of cost-effectiveness and reliability for mass-produced consumer goods.

Replacement Considerations

QT3C-32.768KAZY-T offers similar dimensions but differs in load capacitance (7 pF) and tolerance (+/-30 ppm). Verify circuit compatibility when substituting due to these parameter variations.