12.85661

Crystals Overview

The Geyer Electronic America, Inc. model 12.85661 is a precision quartz crystal component designed for frequency control applications. It operates within a fundamental frequency range of 12.85661 MHz to 27.12 MHz with a tolerance of ±10ppm. The device features a load capacitance of 6pF and an equivalent series resistance (ESR) of 60 Ohms. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly. This Class III life-supporting device supports clocking tree signal conditioning for ASICs, MCUs, MPUs, and FPGAs.

Crystals Feature Summary

• Provides stable frequency control for digital logic circuits
• Supports accurate clock generation in embedded systems
• Designed for dependable long-term timing performance

Crystals Applications

• ASIC clocking tree signal conditioning
• MCU and MPU system clocking
• FPGA frequency reference input

Crystals Procurement Notes

Verify the specific frequency value matches the required 12.85661 MHz specification exactly, as the product line covers a broad range up to 27.12 MHz. Confirm the package type is 4-SMD No Lead and that the load capacitance requirement aligns with the circuit design's 6pF specification. Ensure the ESR of 60 Ohms is compatible with the oscillator circuit. Check for Class III life-supporting device classification if used in critical infrastructure. Request official datasheets to confirm current manufacturing status and any potential lead time impacts due to order volume fluctuations.

Crystals Selection Notes

Select this component when a precise quartz crystal is needed for SMD applications requiring low profile and high stability. The 6pF load capacitance suits circuits with minimal stray capacitance. The 60 Ohm ESR indicates suitability for standard parallel resonant circuits. Consider the ±10ppm tolerance for general-purpose timing rather than ultra-high precision requirements. Verify compatibility with the target host device's clock input specifications before integration.

Crystals Part Context

This part belongs to Geyer Electronic America's line of quartz crystals and oscillators, which are marketed for accurate clock generation and stable frequency control. The manufacturer emphasizes dependable long-term timing performance across various electronic markets. The 12.85661 model is a specific variant within their broader catalog of frequency control products, including ceramic resonators and filters.

Crystals Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Cross-referencing requires matching the exact 12.85661 MHz frequency, 6pF load capacitance, 60 Ohm ESR, and 4-SMD No Lead package dimensions. Generic replacements may not guarantee identical aging characteristics or Class III compliance.