12.85545

Crystals Overview

The Geyer Electronic America, Inc. part number 12.85545 is a surface-mount quartz crystal designed for precision frequency control applications. It operates at a fundamental frequency of 40.0 MHz and utilizes the KX-5T package format. The component features a load capacitance specification of 12 pF, ensuring compatibility with standard oscillator circuits requiring this specific capacitive loading. This device is classified as a Class III Life Supporting Device within the frequency control product category, indicating its critical role in systems where failure could impact life support functions.

Crystals Feature Summary

• Super ultra-miniature footprint suitable for space-constrained designs
• Quartz construction for stable frequency generation
• Surface-mount technology (SMD) implementation

Crystals Applications

• Hearing aids
• Earbuds
• Wireless applications

Crystals Procurement Notes

Verify that the supplier provides official documentation confirming the Class III Life Supporting Device classification, as this designation carries specific regulatory and quality assurance implications. Ensure the procurement channel is an authorized distributor to guarantee authenticity and traceability. Confirm that the lead time aligns with project schedules, noting that manufacturing timelines may be subject to variation due to order volume fluctuations. Request updated shipping status notifications if delivery timing is critical for assembly integration.

Crystals Selection Notes

Select this component when a 40.0 MHz reference signal is required in compact electronic devices. The KX-5T package size makes it appropriate for miniaturized consumer electronics such as hearing aids and earbuds. Verify that the circuit design supports a 12 pF load capacitance to ensure accurate frequency operation. Consider the Class III classification requirements if the application involves safety-critical or life-supporting systems.

Crystals Part Context

This crystal belongs to the KX-2 series from Geyer Electronic America, which specializes in super ultra-miniature quartz crystals. The series is engineered for high-density PCB layouts common in modern wearable and portable audio devices. Geyer Electronic is recognized as a manufacturer providing a complete line of crystals, oscillators, and resonators for various electronic markets.

Crystals Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Cross-referencing requires matching the 40.0 MHz frequency, KX-5T package dimensions, and 12 pF load capacitance specifications.