ILCX20-FF5F8-40.000MHZ

Crystals Overview

The ILCX20-FF5F8-40.000MHZ is a parallel fundamental quartz crystal operating at a nominal frequency of 40 MHz. It features an AT-cut design housed in a 4-pin surface-mount package measuring 1.2mm x 1.0mm x 0.35mm. Key electrical parameters include a load capacitance of 6 pF, equivalent series resistance of 150 Ω maximum, and frequency tolerance of ±50 ppm. The component exhibits aging stability of 3 ppm per year and operates within a temperature range up to 50 °C.

Crystals Feature Summary

• Ultra miniature SMD package compatible with lead-free processing
• AT-cut crystal design for stable fundamental operation
• Low cost surface-mount configuration

Crystals Applications

• Fibre Channel Server & Storage
• Sonet /SDH systems
• 802.11 / Wifi applications
• T1/E1, T3/E3 interfaces

Crystals Procurement Notes

This specific part number is officially listed as obsolete and no longer manufactured by ILSI. Procurement should focus on identifying available substitute components or similar active parts from the manufacturer's current portfolio. Verify compatibility with existing circuit designs before sourcing replacements, as direct availability is limited due to end-of-life status.

Crystals Selection Notes

Select this component for applications requiring a 40 MHz reference in compact surface-mount layouts. Ensure the design supports a 6 pF load capacitance and can accommodate the specified 150 Ω ESR limit. Consider the 50 °C maximum operating temperature when evaluating thermal constraints. Due to obsolescence, alternative selection strategies must prioritize functional equivalents with matching frequency and package dimensions.

Crystals Part Context

The ILCX20 series represents a line of ultra-miniature quartz crystals designed for space-constrained electronic devices. This specific model belongs to the 40 MHz frequency band within that series, utilizing a 4-pad ceramic package. The series is characterized by low cost and compatibility with modern lead-free manufacturing processes, targeting high-volume consumer and industrial electronics.

Crystals Replacement Considerations

Public confirmed substitutes are not explicitly listed in the provided documentation beyond a generic 'Similar' designation. Users should consult ILSI sales representatives for developed frequencies or verify cross-reference data from authorized distributors for functionally equivalent active parts.