12.85523

Crystals Overview

The Geyer Electronic America, Inc. part number 12.85523 is a surface-mount quartz crystal resonator designed for precision frequency control applications. It operates at a fundamental frequency of 28.6363 MHz with a load capacitance of 8 pF and an equivalent series resistance of 100 Ohms. The component features a 4-SMD, no-lead package suitable for automated assembly processes. Frequency stability is rated at 30 ppm, while the initial frequency tolerance is specified as ±50 ppm. The device supports an operating temperature range from -20°C to +70°C.

Crystals Feature Summary

• Super ultra-miniature footprint optimized for space-constrained designs
• Surface-mount construction compatible with standard SMT reflow processes
• Quartz material ensures high frequency stability and reliability

Crystals Applications

• Hearing aids requiring compact frequency sources
• Earbuds and personal audio devices
• Wireless communication modules

Crystals Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to ensure compatibility with required tolerance and packaging specifications. Confirm that the 4-SMD package dimensions align with the target PCB land pattern. Check for any recent updates to the operating temperature range or frequency stability ratings prior to finalizing procurement orders.

Crystals Selection Notes

Select this component when a 28.6363 MHz reference signal is required in a low-profile surface-mount format. Ensure the application circuit can accommodate the 8 pF load capacitance requirement. Verify that the ±50 ppm initial tolerance meets the system's frequency accuracy needs within the -20°C to +70°C operational environment.

Crystals Part Context

This component belongs to the KX-2 series of quartz crystals manufactured by Geyer Electronic. The series is characterized by super ultra-miniature footprints intended for portable electronics. Geyer Electronic specializes in frequency control products including crystals, oscillators, and ceramic resonators for various electronic markets.

Crystals Replacement Considerations

Consult official substitution lists for direct replacements. Generic equivalents must match the 28.6363 MHz frequency, 8 pF load capacitance, 4-SMD package, and 100 Ohm ESR specifications.