QT1CS-32.768KDZF-T

Overview

The QT1CS-32.768KDZF-T is a quartz crystal resonator manufactured by QST, designed for surface-mount applications. It operates at a nominal frequency of 32.768 kHz with a frequency tolerance of ±20 ppm at 25°C. The component features a load capacitance of 12.5 pF and an equivalent series resistance (ESR) of 90 kOhms. It is housed in a compact 4-SMD, No Lead package with body dimensions of 1.2 mm x 1.0 mm. The device is lead-free and RoHS compliant, suitable for low-power timing circuits requiring precise clock signals.

Feature Summary

• Compact 4-SMD no-lead surface-mount package design
• High stability quartz resonator construction
• Lead-free and RoHS compliant manufacturing

Applications

• Real-time clock circuits
• Microcontroller system oscillators
• Low-power embedded timing modules

Procurement Notes

Verify the manufacturer part number QT1CS-32.768KDZF-T against official QST documentation to ensure authenticity. Confirm that the received components match the specified 1.2x1.0 mm package dimensions and 4-SMD no-lead configuration. Check for RoHS compliance markings on the packaging or datasheet provided by the supplier. Ensure storage conditions meet standard electronic component handling requirements to maintain performance integrity.

Selection Notes

Select this component when a small form factor is required for 32.768 kHz timing applications. The ±20 ppm tolerance suits general-purpose real-time clocks where extreme precision is not critical. The 12.5 pF load capacitance must align with the oscillator circuit design. Consider the 90 kOhm ESR value for power consumption constraints in battery-operated devices.

Part Context

This crystal belongs to QST's line of miniature surface-mount resonators. It serves as a timekeeping reference in portable electronics. The 32.768 kHz frequency is standard for dividing down to one second intervals. The no-lead package facilitates automated assembly processes.

Replacement Considerations

Compatible substitutes include other 32.768 kHz SMD crystals with similar 1.2x1.0 mm footprints and 12.5 pF load capacitance. Verify electrical parameters such as ESR and tolerance before substitution. Ensure the replacement part supports the same operating temperature range and mounting style.