12.87163

Crystals Overview

The Geyer Electronic America, Inc. part number 12.87163 is a quartz crystal resonator designed for precision frequency control applications. It operates at a fundamental frequency of 32.768 kHz, which is standard for real-time clock circuits and low-power timing systems. The component features a load capacitance of 7 pF and an equivalent series resistance (ESR) of 60 kOhms. Frequency stability is rated at ±20 ppm. The device utilizes a surface-mount package configuration with two solder pads and no leads, ensuring compact integration into printed circuit boards.

Crystals Feature Summary

• Provides stable 32.768 kHz oscillation for timekeeping functions
• Utilizes a leadless surface-mount design for automated assembly
• Engineered for low power consumption in portable electronics

Crystals Applications

• Real-time clock modules in consumer electronics
• Microcontroller system timing references
• Portable medical devices requiring precise interval measurement

Crystals Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to ensure compatibility with required tolerance levels and packaging formats. Confirm that the 7 pF load capacitance matches the target oscillator circuit design parameters before finalizing procurement orders to prevent frequency drift issues.

Crystals Selection Notes

Select this component when a 32.768 kHz reference is required for synchronous digital logic or clock generation. Ensure the application environment supports the specified ±20 ppm stability range. Verify that the PCB layout accommodates the 2.00mm x 1.20mm footprint dimensions and that the reflow profile aligns with the thermal characteristics of leadless SMD crystals.

Crystals Part Context

This crystal belongs to the family of low-frequency quartz resonators manufactured by Geyer Electronic America, Inc. These components are distinct from higher-frequency parallel resonant crystals used in microprocessors. The 32.768 kHz output corresponds to 2^15 cycles, facilitating binary division for second-based timekeeping without additional complex circuitry.

Crystals Replacement Considerations

Direct substitutes must match the 32.768 kHz frequency, 7 pF load capacitance, and 2-SMD no-lead package dimensions. Cross-reference part numbers within the Geyer 12.87xxx series or equivalent industry-standard equivalents that specify identical electrical parameters and mechanical footprint constraints.