12.85648

Crystals Overview

The Geyer Electronic America, Inc. model 12.85648 is a quartz crystal resonator designed for surface-mount applications. It operates at a fundamental frequency of 24 MHz with a tolerance of ±40 ppm. The component features a load capacitance of 12 pF and an equivalent series resistance (ESR) of 80 Ohms. It is housed in a compact 4-SMD, No Lead package, suitable for space-constrained designs. This device is classified as a Class III Life Supporting Device within the frequency control products category.

Crystals Feature Summary

• Super ultra-miniature footprint optimized for hearing aids, earbuds, and wireless applications
• Surface-mount construction with no lead design for automated assembly compatibility
• Class III Life Supporting Device classification ensuring reliability for critical frequency control

Crystals Applications

• Hearing aid devices requiring precise timing signals
• Earbud audio equipment needing stable clock generation
• Wireless communication modules utilizing 24 MHz reference frequencies

Crystals Procurement Notes

Verify that the specific part number matches the required electrical parameters, particularly the 24 MHz frequency and 12 pF load capacitance. Confirm the package type is 4-SMD, No Lead to ensure board layout compatibility. Check for Class III Life Supporting Device documentation if the application involves medical or safety-critical systems. Ensure the supplier provides official datasheets to validate the ±40 ppm tolerance and 80 Ohm ESR specifications before finalizing orders.

Crystals Selection Notes

Select this component when a 24 MHz fundamental frequency is required in a minimal footprint. The 12 pF load capacitance must match the oscillator circuit design. Consider the ±40 ppm tolerance for system stability requirements. The 4-SMD, No Lead package is suitable for high-volume surface-mount manufacturing processes. Evaluate the 80 Ohm ESR against the driving level constraints of the host circuitry to prevent overdriving the crystal.

Crystals Part Context

This part belongs to the KX-2 series from Geyer Electronic America, known for super ultra-miniature quartz crystals. The series targets markets demanding small form factors, such as hearing aids and earbuds. Geyer provides a complete line of crystals and oscillators, supporting accurate clock generation across various electronic markets. The 12.85648 represents a specific frequency variant within this specialized portfolio.

Crystals Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Verify compatibility with alternative suppliers by matching the 24 MHz frequency, 12 pF load capacitance, 80 Ohm ESR, and 4-SMD, No Lead package dimensions. Ensure any replacement maintains the same Class III Life Supporting Device status if required for the application.