12.86556

Crystals Overview

The Geyer Electronic America, Inc. model 12.86556 is a surface-mount quartz crystal resonator designed for precision frequency control applications. It operates at a fundamental frequency of 40.0 MHz with a load capacitance of 8 pF and an equivalent series resistance of 50 Ohms. The component utilizes a 4-SMD, No Lead package configuration, featuring a maximum height of 0.026 inches (0.65 mm). Frequency tolerance is specified at ±10 ppm, while overall stability is rated at ±20 ppm. This device serves as a clocking tree signal conditioning element for ASICs, MCUs, MPUs, and FPGAs.

Crystals Feature Summary

• Provides precise frequency control for digital logic circuits
• Supports clocking tree signal conditioning in microprocessor systems
• Utilizes a compact surface-mount package for automated assembly

Crystals Applications

• ASIC clocking signal conditioning
• MCU and MPU system timing
• FPGA reference clock generation

Crystals Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to ensure compatibility with required load capacitance and tolerance specifications. Confirm RoHS compliance status and lead time requirements directly with authorized distributors or Geyer Electronic America, Inc. prior to purchase. Ensure the selected variant matches the intended PCB footprint and thermal management needs for the target application environment.

Crystals Selection Notes

Select this component when a 40 MHz fundamental frequency is required for high-precision timing applications. The 8 pF load capacitance specification must align with the host circuit design parameters. Consider the 4-SMD no-lead package dimensions for space-constrained layouts. Evaluate the ±10 ppm tolerance requirement against the system's jitter and phase noise budgets to ensure adequate performance stability under operating conditions.

Crystals Part Context

This part belongs to the Geyer Electronic family of quartz crystals and resonators. The manufacturer specializes in frequency control devices including tuning fork crystals, THT crystals, and oscillators. Geyer Electronic provides design support and circuit validation services to assist customers in integrating these components into complex electronic systems requiring reliable timing references.

Crystals Replacement Considerations

Consult the official Geyer Electronic replacement guide for direct substitutes. Verify that any alternative component matches the 40 MHz frequency, 8 pF load capacitance, and 4-SMD package outline. Cross-reference electrical parameters such as ESR and stability ratings to ensure functional equivalence in the target circuit.