FH4000020

Crystals Overview

The FH4000020 is a surface-mount quartz crystal oscillator from the SaRonix-eCera FH series by Diodes Incorporated. It operates at a nominal frequency of 40 MHz with a frequency stability and tolerance of ±10 ppm. The component features a load capacitance of 15 pF and an equivalent series resistance (ESR) of 30 Ohms. Designed for robust performance, it supports an operating temperature range from -20°C to +85°C. The device utilizes a compact 2.5 mm x 2.0 mm SMD package with a height of 0.6 mm. Key electrical specifications include a maximum drive level of 100 µW and a peak pulse power dissipation rating suitable for standard circuit integration.

Crystals Feature Summary

• Provides precise timing signals with ±10 ppm frequency stability for reliable clock generation.
• Utilizes a compact surface-mount footprint to facilitate automated PCB assembly processes.
• Engineered for stable operation across extended industrial temperature ranges.

Crystals Applications

• Microcontroller clock source circuits
• Communication interface timing references
• Digital signal processing systems

Crystals Procurement Notes

Verify the specific ordering suffix and packaging configuration against the manufacturer's current datasheet before procurement. Confirm that the required frequency tolerance and load capacitance align with the target circuit design parameters. Ensure compliance with RoHS directives and check for any recent product change notices that may affect availability or specifications.

Crystals Selection Notes

Select this component when a 40 MHz reference with tight ±10 ppm stability is required in a small form factor. Compare the 15 pF load capacitance requirement against the oscillator circuit's internal capacitance to ensure proper frequency matching. Consider the 30 Ohm ESR value for impedance matching within the host system's timing architecture.

Crystals Part Context

This part belongs to the SaRonix-eCera FH series of quartz crystals, designed for high-reliability applications. The series emphasizes miniaturization and consistent performance in demanding environments. It serves as a fundamental timing element for various electronic systems requiring precise frequency control without the complexity of active oscillators.

Crystals Replacement Considerations

Direct substitutes must match the 40 MHz frequency, 15 pF load capacitance, ±10 ppm tolerance, and 2.5x2.0 mm package dimensions. Verify compatibility of the ESR and drive level specifications with the existing circuit design to prevent frequency drift or component damage.