QT26-32.768KHZF-B

Overview

The QT26-32.768KHZF-B is a cylindrical quartz crystal resonator manufactured by QST, designed for through-hole mounting. It operates at a nominal frequency of 32.768 kHz with a load capacitance of 12.5 pF and a tolerance of ±5 ppm at 25°C. The component features a can package measuring Ø1.9 mm in diameter and 6 mm in height. It supports an operating temperature range from -20°C to +70°C.

Feature Summary

• Cylindrical metal can construction for mechanical stability
• High frequency accuracy suitable for precision timing applications
• Through-hole mounting configuration for robust PCB integration

Applications

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

Procurement Notes

Verify the manufacturer designation as QST or TXC Corporation depending on the specific supply chain source, as both entities are associated with this part number variant. Confirm the suffix 'B' corresponds to the specified packaging and tolerance parameters. Ensure the load capacitance requirement matches the circuit design specifications of 12.5 pF before procurement.

Selection Notes

Select this component when a precise 32.768 kHz reference is required for timekeeping functions. The ±5 ppm tolerance offers higher accuracy than standard ±10 ppm variants. Consider the cylindrical package dimensions for board space constraints. Verify that the operating temperature range meets the environmental requirements of the target application.

Part Context

This crystal belongs to the QT26 series of cylindrical quartz resonators. It serves as a fundamental timing element in digital systems requiring low-frequency stable oscillation. The part is commonly used alongside microcontrollers and real-time clock chips to maintain accurate time synchronization in battery-operated devices.

Replacement Considerations

QT26-32.768KEZF-B offers similar dimensions but with ±10 ppm tolerance. QT26V-100.000KAZF-T is a different frequency variant within the same family. Direct substitution requires verifying load capacitance and tolerance compatibility.