QT1M-32.768KAZF-T

Overview

The QT1M-32.768KAZF-T is a quartz crystal resonator manufactured by QST, designed for surface-mount applications. It operates at a fundamental frequency of 32.768 kHz, utilizing a tilted cut design to ensure stable timing performance across varying environmental conditions. The component features a load capacitance of 12.5 pF and an equivalent series resistance (ESR) of 65 kOhms. Frequency tolerance is specified at ±30 ppm at 25°C. The device is housed in a compact 2-SMD, No Lead package with dimensions of 6.9 x 1.4 x 1.4 mm. It supports operation within a temperature range of -40°C to +85°C and is supplied in tape and reel packaging for automated assembly processes.

Feature Summary

• Surface-mount construction with no lead design for reliable PCB integration
• Tilted cut quartz technology ensures frequency stability over temperature variations
• Optimized for low power consumption in portable electronic devices

Applications

• Real-time clock circuits in microcontroller systems
• Wristwatches and wearable timekeeping devices
• Portable consumer electronics requiring precise timing references

Procurement Notes

Verify the specific ordering suffix 'AZF' against the manufacturer's current datasheet to confirm frequency tolerance and packing details. Ensure compatibility with standard reflow soldering profiles defined in the component documentation. Confirm that the 2-SMD package dimensions align with the target PCB footprint requirements before finalizing procurement orders.

Selection Notes

Select this component when a 32.768 kHz reference is required for low-power, space-constrained designs. The ±30 ppm tolerance suits general-purpose timing applications where high precision is not critical. Consider the 12.5 pF load capacitance requirement to ensure proper oscillator circuit tuning. Evaluate the operating temperature range against the intended deployment environment to guarantee reliability.

Part Context

This part belongs to the QT1M series of kHz crystals from QST, which are engineered for cost-effective timing solutions. The series utilizes plastic encapsulation and offers various tolerance options denoted by specific suffixes. The QT1M form factor is widely adopted in industries requiring small footprints and robust performance for secondary clock signals.

Replacement Considerations

Direct substitutes include other 32.768 kHz SMD crystals with identical 6.9x1.4mm dimensions and 12.5pF load capacitance. Verify pinout compatibility and thermal characteristics when cross-referencing with alternative manufacturers. Ensure the replacement maintains the same ±30 ppm tolerance and -40°C to +85°C operating range.