12.87143

Crystals Overview

The Geyer Electronic America, Inc. model 12.87143 is a surface-mount quartz crystal resonator designed for precision timing applications. It operates at a fundamental frequency of 32.768 kHz with a tolerance of ±20 ppm and a stability of -0.035 ppm. The component features a load capacitance of 9 pF and an equivalent series resistance (ESR) of 50 kOhms. It utilizes a two-terminal SMD package without leads, suitable for compact electronic designs requiring stable clock signals.

Crystals Feature Summary

• Provides precise 32.768 kHz frequency output for real-time clocking
• Utilizes low-profile surface-mount packaging for space-constrained boards
• Ensures high frequency stability with minimal drift characteristics

Crystals Applications

• Real-time clock circuits in consumer electronics
• Microcontroller system oscillators
• Portable device timing references

Crystals Procurement Notes

Verify the specific datasheet version to confirm exact mechanical dimensions and soldering profile requirements. Ensure compatibility with the target circuit's load capacitance specifications. Cross-reference the ESR value against the oscillator design constraints to guarantee reliable startup performance.

Crystals Selection Notes

Select this component when a standard 32.768 kHz reference is required for timekeeping functions. The 9 pF load capacitance must match the host circuit design. Consider the ±20 ppm tolerance for applications where long-term accuracy is critical but extreme precision is not mandated.

Crystals Part Context

This part belongs to Geyer Electronic's range of quartz crystals and resonators. The manufacturer specializes in frequency control products including oscillators and filters. This specific model serves as a foundational timing element within broader electronic systems requiring stable periodic signals.

Crystals Replacement Considerations

Direct substitutes include other 32.768 kHz SMD crystals with identical 9 pF load capacitance and similar ESR ratings. Verify pinout compatibility and package dimensions before integration.