12.87112

Crystals Overview

The Geyer Electronic America, Inc. model 12.87112 is a surface-mount quartz crystal designed for precision timing applications. It operates at a fundamental frequency of 32.768 kHz with a load capacitance of 12.5 pF and an equivalent series resistance of 50 kOhms. The component utilizes a 4-SOJ package with a 5.50mm pitch, suitable for automated assembly processes. Frequency stability ranges from -0.0340 to 0.0060 ppm, ensuring high accuracy in timekeeping circuits. The device supports an operating temperature range starting at -20°C, providing reliable performance in standard electronic environments.

Crystals Feature Summary

• Precision frequency control utilizing quartz resonator technology
• Surface mount construction compatible with automated pick-and-place equipment
• High frequency stability for accurate timekeeping applications

Crystals Applications

• Real-time clock circuits
• Digital watches and wristwatches
• Portable electronic devices requiring low power consumption

Crystals Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to ensure compatibility with required tolerance levels and packaging options. Confirm that the 4-SOJ package dimensions align with the target PCB footprint. Check for any recent updates regarding RoHS compliance or material declarations before finalizing procurement orders.

Crystals Selection Notes

Select this component when a 32.768 kHz reference signal is required for digital timekeeping systems. The 12.5 pF load capacitance must match the oscillator circuit design specifications. Consider the 50 kOhm ESR limit to ensure proper oscillation startup conditions within the host microcontroller or dedicated timer IC.

Crystals Part Context

This part belongs to Geyer Electronic's portfolio of frequency control products, which includes crystals, oscillators, and resonators. The company specializes in manufacturing quartz-based components for global markets, offering solutions for various consumer and industrial electronics applications requiring precise frequency generation.

Crystals Replacement Considerations

Consult official cross-reference lists for direct substitutes. Ensure replacement parts maintain identical frequency, load capacitance, and package dimensions to guarantee functional equivalence without redesigning the host circuit board.