12.87118

Crystals Overview

The Geyer Electronic America, Inc. model 12.87118 is a quartz watch crystal designed for precision timing applications. It operates at a fundamental frequency of 32.768 kHz with a frequency tolerance of ±20 ppm. The component features a load capacitance of 6 pF and an equivalent series resistance (ESR) of 51 kOhms. It is housed in a 4-SMD, flat leads package suitable for surface-mount assembly. The device supports an operating temperature range starting from -20°C.

Crystals Feature Summary

• Super ultra-miniature footprint design optimized for space-constrained environments
• Quartz construction ensuring stable oscillation for timekeeping functions
• Surface-mount configuration facilitating automated PCB assembly processes

Crystals Applications

• Hearing aids requiring compact timing solutions
• Earbuds utilizing miniature electronic components
• Wireless applications needing precise low-frequency reference signals

Crystals Procurement Notes

Verify the specific package variant against official datasheets, as distributor listings may vary between flat lead and no-lead configurations. Confirm the exact load capacitance and ESR values required by the circuit design before ordering. Ensure compatibility with the target operating temperature range specified in the technical documentation to guarantee reliable performance in the intended application environment.

Crystals Selection Notes

Select this component when a super ultra-miniature quartz crystal is required for hearing aids, earbuds, or wireless devices. The 32.768 kHz frequency is standard for real-time clock circuits. Verify that the 6 pF load capacitance matches the oscillator circuit requirements. Consider the ±20 ppm tolerance sufficient for general timekeeping needs where high precision is not critical.

Crystals Part Context

This part belongs to the KX-2 series of quartz crystals manufactured by Geyer Electronic America, Inc. The series is characterized by its super ultra-miniature footprint, making it distinct from standard through-hole or larger surface-mount crystals. These components are specifically engineered for modern portable electronics where size constraints are significant factors in design.

Crystals Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.