402F54012IKR

Crystals Overview

The CTS-Frequency Controls 402F54012IKR is a surface-mount crystal resonator operating at a fundamental frequency of 54 MHz. It features an 8 pF load capacitance and an equivalent series resistance (ESR) of 60 Ohms. The component offers a frequency tolerance of ±10 ppm and a stability of ±20 ppm. Designed for reliability, it operates within a temperature range of -40°C to +85°C. The package is a compact 4-SMD, no-lead type with dimensions of 1.60mm x 1.20mm x 0.45mm maximum height.

Crystals Feature Summary

• Fundamental mode operation for precise frequency generation
• Compact 4-SMD no-lead surface mount package design
• Wide industrial temperature range capability from -40°C to +85°C

Crystals Applications

• Digital signal processing clock sources
• Microcontroller system timing references
• Communication interface synchronization circuits

Crystals Procurement Notes

Verify the specific ordering suffix 'KR' against the manufacturer's current datasheet to confirm packaging and availability status, as distribution channels may list varying lead times or obsolete statuses. Ensure the load capacitance requirement of your circuit matches the 8pF specification exactly to maintain frequency accuracy. Cross-reference the ESR value of 60 Ohms with your oscillator circuit design to ensure proper startup conditions are met without excessive drive level issues.

Crystals Selection Notes

Select this component when a 54 MHz fundamental frequency is required with tight initial tolerance of ±10 ppm. The 8pF load capacitance dictates the external capacitor values needed in the oscillator circuit. Consider the 4-SMD footprint constraints for PCB layout. The -40°C to +85°C range suits general industrial applications but may require higher grade parts for automotive or extreme environments. Verify that the 60 Ohm ESR is compatible with the driving gate resistance of the target microcontroller or FPGA.

Crystals Part Context

This part belongs to the CTS 402 series of low-profile SMD crystals. It is functionally similar to other 54 MHz variants in the series, such as the 402F54022IKT, which differs primarily in frequency tolerance specifications. The 402 series is designed for space-constrained applications requiring reliable timing solutions in consumer and industrial electronics.

Crystals Replacement Considerations

Direct substitutes include the 402F54022IKT, though it specifies ±20ppm tolerance instead of ±10ppm. Other 54 MHz 8pF SMD crystals from different manufacturers must be verified for pin compatibility, ESR limits, and drive level sensitivity before substitution.