402F4001XIAR

Crystals Overview

The CTS-Frequency Controls 402F4001XIAR is a 40 MHz fundamental mode quartz crystal resonator designed for surface-mount applications. It features a 4-SMD, No Lead package with a maximum seated height of 0.022 inches (0.55 mm). The component operates with a load capacitance of 10 pF and exhibits an equivalent series resistance (ESR) of 60 Ohms. Frequency tolerance is specified at ±10 ppm, while frequency stability is rated at ±15 ppm. This device provides precise timing solutions for electronic circuits requiring stable oscillation frequencies.

Crystals Feature Summary

• Surface-mount design utilizing a leadless 4-SMD package configuration
• Fundamental mode quartz crystal operation for stable frequency generation
• Optimized for low power consumption with defined ESR characteristics

Crystals Applications

• Microcontroller clock sources
• Communication module timing references
• Digital signal processing circuits

Crystals Procurement Notes

Verify the complete part number including suffixes such as 'XIAR' to ensure correct packaging and specifications. Confirm that the required load capacitance matches the circuit design. Check datasheet for storage conditions and soldering profiles to maintain component integrity during assembly processes.

Crystals Selection Notes

Select this component when a 40 MHz frequency is required in a compact surface-mount form factor. Ensure the application circuit supports a 10 pF load capacitance. Consider the ±10 ppm tolerance if tighter stability is needed, or evaluate alternative packages if higher mechanical robustness is required for harsh environments.

Crystals Part Context

This crystal belongs to the 402 series from CTS-Frequency Controls, which offers various fundamental mode crystals in small outline packages. The series is engineered for general-purpose timing applications where space constraints are critical. Similar parts in the lineup may differ in frequency, package size, or electrical parameters.

Crystals Replacement Considerations

Direct replacements must match the 40 MHz frequency, 10 pF load capacitance, and 4-SMD no-lead package dimensions. Verify equivalent ESR and tolerance ratings. Cross-reference with other manufacturers offering compatible SMD crystals if supply chain issues arise.