12.86521

Crystals Overview

The Geyer Electronic America, Inc. model 12.86521 is a quartz crystal component designed for precision frequency control applications. It operates at a nominal frequency of 27.12 MHz with a tolerance of ±50ppm. The device features a load capacitance of 10pF and an equivalent series resistance (ESR) of 50 Ohms. It is housed in a compact 4-SMD, No Lead package, suitable for surface mount technology processes.

Crystals Feature Summary

• Precision quartz crystal construction for stable frequency generation
• Designed for surface mount integration via no-lead SMD package
• Optimized for clocking tree signal conditioning in digital circuits

Crystals Applications

• ASIC clocking tree signal conditioning
• MCU and MPU clock source support
• FPGA timing reference implementation

Crystals Procurement Notes

Verify the specific ordering code against the manufacturer's latest datasheet to ensure correct frequency tolerance and package variant. Confirm that the required load capacitance matches the target circuit design specifications before procurement. Check for any updated revision history or packaging changes such as tape and reel specifications. Ensure compatibility with standard reflow soldering profiles defined for this component type.

Crystals Selection Notes

Select this component when a 27.12 MHz reference with ±50ppm stability is required for embedded systems. Consider the 10pF load capacitance requirement for oscillator circuit design. Evaluate the 50 Ohm ESR against the oscillator driver strength capabilities. Assess the 4-SMD package dimensions for PCB layout constraints and thermal management requirements during assembly.

Crystals Part Context

This part belongs to Geyer Electronic's KX-9B series of quartz precision frequency control devices. The series is engineered to support modern digital logic families including ASICs, MCUs, MPUs, and FPGAs. These components provide essential timing references for system synchronization and data integrity in high-density electronic assemblies.

Crystals Replacement Considerations

Consult official substitution lists for compatible frequency and package alternatives. Verify electrical parameters match exactly if cross-referencing with other manufacturers' offerings.