QT1C-32.768KDZF-T

Overview

The QT1C-32.768KDZF-T is a surface-mount quartz crystal oscillator manufactured by QST, designed for precision timing applications. It operates at a fundamental frequency of 32.768 kHz with a load capacitance of 12.5 pF and a frequency tolerance of ±20 ppm at 25°C. The component features a compact 2-SMD, no-lead package measuring 1.60 mm x 1.00 mm, suitable for space-constrained designs. It supports a soldering peak temperature of 260°C for a maximum duration of 200 seconds and functions within an operating temperature range of -40°C to +85°C.

Feature Summary

• Compact 2-SMD no-lead footprint optimized for automated surface-mount assembly processes
• Fundamental mode operation providing stable oscillation at standard real-time clock frequencies
• Robust thermal endurance supporting high-temperature reflow soldering profiles

Applications

• Real-time clock (RTC) circuits in portable electronics
• Timing references for microcontrollers and embedded systems
• Wearable devices requiring low-profile components

Procurement Notes

Verify the specific load capacitance suffix 'F' corresponds to 12.5 pF as indicated in official documentation. Confirm the package dimensions match the 1.60mm x 1.00mm specification for PCB layout compatibility. Ensure the supplier provides traceability for the tape and reel packaging method designated by the 'T' suffix. Cross-reference the manufacturer's latest datasheet to validate the operating temperature range and soldering thermal limits before integration.

Selection Notes

Select this component when a small form factor is required for 32.768 kHz timing applications. The 12.5 pF load capacitance must align with the host circuit's design requirements to ensure accurate frequency output. Consider the ±20 ppm tolerance sufficient for general-purpose timekeeping rather than high-precision navigation systems. The wide operating temperature range makes it suitable for consumer electronics exposed to varying environmental conditions.

Part Context

This part belongs to QST's QT1 series of surface-mount crystals, characterized by their minimal physical profile. The series utilizes fundamental mode quartz resonators housed in leadless SMD packages. These components are engineered for high-volume manufacturing environments where consistent performance and reliable solder joint formation are critical for long-term device stability.

Replacement Considerations

Direct substitutes include other manufacturers' 32.768 kHz crystals with identical 1.6x1.0mm footprints and 12.5pF load capacitance. Verify that alternative parts support the same -40°C to +85°C temperature range and ±20 ppm tolerance. Ensure the replacement maintains the fundamental operating mode and compatible soldering thermal characteristics.