402F540XXCKT

Crystals Overview

The 402F540XXCKT is a surface-mount MHz crystal manufactured by CTS-Frequency Controls. It operates at a fundamental frequency of 54 MHz with a stability and tolerance of ±15ppm. The component features an equivalent series resistance (ESR) of 60 Ohms and a load capacitance of 8pF. It is housed in a compact 4-SMD, No Lead package measuring 2.00mm x 1.60mm with a maximum seated height of 0.55mm. The device supports an operating temperature range of -20°C to 70°C and complies with RoHS3 standards.

Crystals Feature Summary

• Fundamental mode operation for precise timing applications
• Compact 4-SMD no-lead surface mount design
• RoHS3 compliant environmental construction

Crystals Applications

• General purpose clock generation circuits
• Microcontroller system timing references
• Communication interface synchronization

Crystals Procurement Notes

Verify the specific ESR value against the official manufacturer datasheet, as distributor listings may vary between 60 Ohms and 100 Ohms for similar part numbers. Confirm the exact load capacitance requirements match your circuit design before procurement. Ensure the 4-SMD package dimensions align with your PCB footprint constraints. Check current availability status as this component may be subject to discontinuation or supply limitations.

Crystals Selection Notes

Select this component when a 54 MHz fundamental frequency is required with ±15ppm stability. The 8pF load capacitance must match the oscillator circuit's external capacitor values. Consider the 60 Ohm ESR specification for drive level sensitivity. The -20°C to 70°C temperature range suits commercial applications. Verify the 4-SMD package size fits within the available board space.

Crystals Part Context

This part belongs to the 402 Series of crystals from CTS-Frequency Controls. The series offers various frequencies in a standardized 4-SMD package. The 402F540XXCKT specifically provides 54 MHz output. Similar parts in the series include different frequencies like 20 MHz or other variants with different tolerances. The series is designed for surface-mount assembly processes.

Crystals Replacement Considerations

Direct substitutes include 402F540XXCJT and 402F540XXCJR, which share identical frequency specifications. These alternatives maintain the same 54 MHz fundamental frequency and ±15ppm stability. Verify that the load capacitance and ESR values are compatible with the existing circuit design before substitution.