QT26-32.768KDZB-B

Overview

The QST QT26-32.768KDZB-B is a through-hole quartz crystal resonator operating at a nominal frequency of 32.768 kHz. It features a cylindrical can package with radial leads, measuring 1.9 mm in diameter and 6 mm in height. The component has a load capacitance of 6 pF and a frequency tolerance of ±20 ppm at 25°C. It operates within a temperature range of -20°C to +70°C and exhibits a motional resistance of 35 kOhms.

Feature Summary

• Provides stable timekeeping signals for real-time clock applications
• Utilizes a compact cylindrical can form factor suitable for space-constrained designs
• Designed for reliable operation in standard industrial temperature ranges

Applications

• Real-time clock circuits in embedded systems
• Microcontroller oscillator inputs
• Industrial automation control panels
• Consumer electronics requiring precise timing

Procurement Notes

Verify the specific load capacitance requirement of your circuit design against the component's 6 pF specification to ensure accurate frequency performance. Confirm that the through-hole mounting style aligns with your PCB assembly capabilities. Ensure the operating temperature range meets the environmental conditions of the final application. Cross-reference the physical dimensions with the mechanical constraints of the enclosure.

Selection Notes

Select this component when a 32.768 kHz reference signal is required for timekeeping functions. Consider the ±20 ppm tolerance if high precision is not critical. Evaluate the 35 kOhm motional resistance compatibility with the oscillator circuit's drive level requirements. Choose this THT variant over surface mount options if manual assembly or rework flexibility is prioritized.

Part Context

This part belongs to QST's QT26 series of low-frequency quartz crystals. These components are commonly used as clock sources for digital logic and microprocessors. The series offers various tolerance and capacitance options to suit different oscillator topologies. The cylindrical can construction provides mechanical protection for the internal quartz tuning fork element.

Replacement Considerations

Direct substitutes must match the 32.768 kHz frequency, 6 pF load capacitance, and ±20 ppm tolerance. Verify that alternative packages maintain the same radial lead spacing and body dimensions for board compatibility. Check that the replacement part supports the same operating temperature range and electrical characteristics.