12.87113

Crystals Overview

The Geyer Electronic America, Inc. part number 12.87113 is a surface-mount tuning fork quartz crystal designed for precision timing applications. It operates at a fundamental frequency of 32.768 kHz with a tolerance of ±5 ppm. The component features a load capacitance of 12.5 pF and a motional resistance of 50 kOhms. It utilizes a plastic package in a 4-pin SOJ configuration with a 5.50 mm pitch. The device is supplied in tape and reel packaging for automated assembly processes.

Crystals Feature Summary

• Tuning fork quartz construction optimized for low-power real-time clock applications
• Surface-mount design compatible with standard SMD reflow soldering profiles
• Plastic encapsulation providing environmental protection for the resonator element

Crystals Applications

• Real-time clock circuits in consumer electronics
• Microcontroller system timing references
• Portable battery-powered devices requiring low standby current

Crystals Procurement Notes

Verify that the specific order includes the tape and reel packaging format as indicated by the product description. Confirm compatibility with the target PCB footprint matching the 4-SOJ 5.50mm pitch dimensions. Ensure the application circuit accounts for the specified 50 kOhm motional resistance to guarantee proper oscillation startup conditions within the designated tolerance limits.

Crystals Selection Notes

Select this component when a precise 32.768 kHz reference is required for timekeeping functions in compact electronic designs. The ±5 ppm tolerance suits most general-purpose clock applications where high stability is not critical. Consider the 12.5 pF load capacitance requirement when designing the oscillator circuit to ensure accurate frequency performance without additional trimming adjustments.

Crystals Part Context

This part belongs to Geyer Electronic's line of surface-mount tuning fork crystals. These components are engineered for cost-effective mass production while maintaining reliable frequency stability. The 12.87113 model represents a standard solution for integrating quartz timing into modern printed circuit boards where space constraints necessitate small form factor packages.

Crystals Replacement Considerations

Direct substitutes include other 32.768 kHz SMD tuning fork crystals with identical 4-SOJ 5.50mm pitch footprints and similar electrical parameters such as 12.5 pF load capacitance and comparable motional resistance values.