QT1C-32.768KDZB-T

Overview

The QT1C-32.768KDZB-T is a quartz crystal resonator manufactured by QST, designed for surface-mount applications. It operates at a fundamental frequency of 32.768 kHz with a frequency tolerance of ±20 ppm at 25°C. The component features a load capacitance of 6 pF and utilizes a 2-SMD, No Lead package configuration. Its physical dimensions are specified as 1.6 mm x 1.0 mm x 0.5 mm. The device is rated for an operating temperature range of -40°C to +85°C, ensuring stability in standard commercial environments.

Feature Summary

• Surface-mount quartz crystal construction for compact circuit integration
• Stable frequency generation at 32.768 kHz fundamental resonance
• Compact 1.6x1.0 mm footprint suitable for space-constrained designs

Applications

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

Procurement Notes

Verify the specific suffix (KDZB) against official QST documentation to confirm the exact load capacitance and tolerance specifications. Ensure the supplier provides traceability to the original manufacturer. Cross-reference the package dimensions and terminal configuration with the target PCB footprint to guarantee mechanical compatibility during assembly.

Selection Notes

Select this component when a precise 32.768 kHz reference is required for timekeeping or low-frequency synchronization. The ±20 ppm tolerance suits general-purpose applications where high precision is not critical. Consider the 6 pF load capacitance requirement to ensure proper oscillator circuit design and frequency accuracy within the specified operational temperature range.

Part Context

This part belongs to QST's line of miniature surface-mount crystals. These components are engineered for use in portable and battery-operated devices where size and power efficiency are paramount. The 32.768 kHz frequency is a standard choice for dividing down to one-second intervals in digital clocks and timers.

Replacement Considerations

Direct substitutes include other manufacturers' 32.768 kHz crystals with identical 6 pF load capacitance and ±20 ppm tolerance. Verify that alternative parts match the 1.6x1.0x0.5 mm outline and 2-SMD no-lead termination style to maintain board layout integrity.