12.87002

Crystals Overview

The Geyer Electronic America, Inc. model 12.87002 is a surface-mount tuning fork crystal designed for precision frequency control applications. It operates at a fundamental frequency of 32.768 kHz with a tolerance of ±20 ppm. The component features a load capacitance of 7 pF and an equivalent series resistance (ESR) of 90 kOhms. It utilizes a 4-SMD, no-lead package configuration suitable for automated assembly processes.

Crystals Feature Summary

• Tuning fork resonator structure optimized for low power consumption
• Surface-mount design compatible with standard SMT reflow processes
• Fundamental mode operation ensuring stable frequency generation

Crystals Applications

• Real-time clock circuits in portable electronics
• Microcontroller system timing references
• Wristwatch and wearable device oscillators

Crystals Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to ensure correct packaging and tape-and-reel specifications. Confirm that the 4-SMD footprint matches the target PCB layout. Check for any recent updates to the RoHS compliance status or material declarations prior to finalizing procurement orders.

Crystals Selection Notes

Select this component when a 32.768 kHz reference is required for timekeeping functions. Ensure the circuit design accommodates the 90 kOhm ESR characteristic. Verify that the ±20 ppm tolerance meets the long-term accuracy requirements of the application environment. Consider thermal stability if operating outside standard commercial temperature ranges.

Crystals Part Context

This part belongs to Geyer Electronic's line of quartz crystals and oscillators. The company specializes in frequency control products with decades of industry experience. The 12.87002 represents a standard catalog item within their surface-mount tuning fork crystal portfolio, widely used in consumer electronics.

Crystals Replacement Considerations

Consult the official Geyer Electronic cross-reference list for direct substitutes. Ensure replacement parts maintain identical 32.768 kHz frequency, 7 pF load capacitance, and 4-SMD package dimensions. Verify compatibility with existing board space and soldering profiles.