12.89429

Crystals Overview

The Geyer Electronic America, Inc. model 12.89429 is an 8 MHz fundamental mode quartz crystal oscillator designed for surface-mount applications. It features a KX-9BT series construction with a 2-SMD, no lead package configuration. The component exhibits a frequency tolerance of ±50ppm and a load capacitance of 12pF. Equivalent series resistance (ESR) is specified at 100 Ohms. This device serves as a precision frequency control element within digital circuitry.

Crystals Feature Summary

• Provides stable clocking tree signal conditioning for ASICs, MCUs, MPUs, or FPGAs
• Utilizes KX-9B quartz precision technology for frequency stability
• Designed for surface-mount integration in compact electronic assemblies

Crystals Applications

• ASIC clocking support
• MCU frequency reference
• MPU timing circuits
• FPGA clock generation

Crystals Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 2-SMD no-lead package dimensions align with the PCB footprint specifications. Ensure the manufacturing source is Geyer Electronic America, Inc., as distributor listings may vary. Check for any recent updates to the datasheet regarding environmental compliance or operating temperature ranges. Validate that the ESR value meets the oscillator circuit's drive level constraints.

Crystals Selection Notes

Select this component when an 8 MHz fundamental frequency is required for digital logic timing. The 12pF load capacitance must match the external capacitors in the host oscillator circuit to ensure accurate frequency output. Consider the 100 Ohm ESR when evaluating power consumption and start-up time. The SMD form factor is suitable for automated assembly processes. Verify compatibility with the specific MCU or FPGA clock input requirements.

Crystals Part Context

This part belongs to the KX-9BT series of quartz crystals manufactured by Geyer Electronic America, Inc. The manufacturer specializes in quartz crystals, oscillators, and resonators. The product is categorized under Class III Life Supporting Devices, indicating use in systems where failure could impact safety. The series is designed for precision frequency control in modern digital electronics.

Crystals Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Cross-referencing requires matching frequency, load capacitance, ESR, and package dimensions. Consult the manufacturer directly for potential alternatives if supply chain constraints exist.