QT2C-32.768KDZB-T

Overview

The QT2C-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 tolerance of ±20 ppm at 25°C. The component features a load capacitance of 6 pF and utilizes a lead-free, RoHS-compliant construction. Its physical dimensions are 2.0 mm x 1.2 mm x 0.6 mm in a 2-SMD, no-lead package. The device supports an operating temperature range of -40°C to +85°C.

Feature Summary

• Surface-mount design with a compact 2.0x1.2mm footprint
• Lead-free construction compliant with RoHS standards
• Stable frequency performance within ±20 ppm tolerance

Applications

• Real-time clock circuits
• Microcontroller system clocks
• Low-power embedded devices

Procurement Notes

Verify the specific load capacitance requirement of 6 pF against the target circuit design to ensure frequency accuracy. Confirm that the PCB layout accommodates the 2.0x1.2mm SMD package dimensions. Ensure the operating environment remains within the specified -40°C to +85°C range to maintain the stated ±20 ppm stability. Check for RoHS compliance documentation if required by regulatory standards.

Selection Notes

Select this component when a precise 32.768 kHz reference is needed for timekeeping or low-speed synchronization. The 6 pF load capacitance suits circuits with minimal external capacitive loading. Consider the small form factor for space-constrained designs. Evaluate the ±20 ppm tolerance against the system's timing budget requirements.

Part Context

This part belongs to QST's QT2C series of thin-film quartz crystals. These components are engineered for high reliability in consumer electronics and industrial control systems. The series offers various frequency options and package sizes, with the KDZB variant specifically denoting the 32.768 kHz frequency and 6 pF load capacitance configuration.

Replacement Considerations

Direct substitutes include the QT2C-32.768KAZC-T, which shares similar specifications but may differ in load capacitance or packaging details. Verify pin compatibility and electrical parameters before substitution. Consult official datasheets for dimensional tolerances and mounting recommendations.