12.85691

Crystals Overview

The Geyer Electronic America, Inc. part number 12.85691 is a quartz crystal resonator designed for surface mount applications. It operates at a fundamental frequency of 25 MHz with a specified load capacitance of 9 pF and an equivalent series resistance of 100 Ohms. The component utilizes a 4-SMD, No Lead package configuration, offering a compact form factor suitable for space-constrained designs. This frequency control product is classified as a Class III Life Supporting Device, indicating its critical role in essential electronic systems where reliability is paramount.

Crystals Feature Summary

• Super ultra-miniature footprint optimized for hearing aids, earbuds, and wireless applications
• Surface mount construction with no lead design for automated assembly compatibility
• Class III Life Supporting Device classification ensuring high reliability standards

Crystals Applications

• Hearing aids
• Earbuds
• Wireless applications

Crystals Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to ensure exact electrical and mechanical specifications match your design requirements. Confirm that the component meets all necessary regulatory standards for Class III Life Supporting Devices if used in medical or safety-critical equipment. Check for any recent updates to the product data sheet regarding tolerance or temperature range changes before finalizing procurement.

Crystals Selection Notes

Select this component when a precise 25 MHz reference is required in ultra-compact wearable or portable electronics. The 9 pF load capacitance must align with the oscillator circuit design to ensure accurate frequency stability. Consider the 4-SMD package dimensions carefully to fit within the tight spatial constraints typical of modern hearing aid and earbud form factors.

Crystals Part Context

This part belongs to the KX-2 series of quartz crystals from Geyer Electronic America, Inc., which are specifically engineered for super ultra-miniature applications. The series targets the growing market for miniaturized audio and communication devices, providing stable frequency control in packages significantly smaller than traditional through-hole or standard SMD crystals.

Crystals Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Ensure compatibility by matching the 25 MHz frequency, 9 pF load capacitance, and 4-SMD package dimensions when evaluating alternative components.