12.85564

Crystals Overview

The Geyer Electronic America, Inc. model 12.85564 is a surface-mount quartz crystal designed for precision frequency control in electronic circuits. It operates at a fundamental frequency of 40 MHz with a frequency tolerance of ±20 ppm. The component features a load capacitance of 10 pF and an equivalent series resistance (ESR) of 80 Ohms. It utilizes a 4-SMD, no-lead package configuration suitable for automated assembly processes. This device provides stable oscillation for clock generation and timing applications requiring high accuracy within standard operating conditions.

Crystals Feature Summary

• Precision frequency stability with ±20 ppm tolerance
• Compact surface-mount design for space-constrained PCB layouts
• Low equivalent series resistance for efficient signal transmission

Crystals Applications

• Microcontroller clock sources
• Communication interface timing
• Consumer electronics timing circuits

Crystals Procurement Notes

Verify the specific package variant and lead-free status against the manufacturer's current datasheet before ordering. Confirm that the 4-SMD footprint matches your PCB land pattern requirements. Ensure the 10 pF load capacitance aligns with your circuit design specifications to maintain the stated ±20 ppm frequency accuracy. Check for any recent updates to the RoHS compliance documentation.

Crystals Selection Notes

Select this component when a 40 MHz reference signal is required with moderate stability needs. The 80 Ohm ESR value suggests suitability for standard CMOS or TTL driver interfaces. Consider the 4-SMD form factor if board space is limited compared to through-hole alternatives. Validate that the operating temperature range of the host system falls within the crystal's specified limits to ensure long-term reliability.

Crystals Part Context

This part belongs to Geyer Electronic's line of quartz crystals, which are widely used for frequency control in various electronic markets. Geyer specializes in providing reliable timing solutions including crystals, oscillators, and resonators. The 12.85564 model represents a standard commercial-grade component often utilized in general-purpose digital systems where precise timing is essential but extreme environmental ruggedness is not the primary constraint.

Crystals Replacement Considerations

Consult official cross-reference lists for direct substitutes. Verify pin compatibility and electrical parameters such as frequency, load capacitance, and ESR when evaluating alternative manufacturers. Ensure that any replacement maintains the same 4-SMD package dimensions to fit existing footprints without redesign.