402F27012IKR

Crystals Overview

The CTS-Frequency Controls 402F27012IKR is a fundamental mode crystal resonator operating at a nominal frequency of 27 MHz. It features a frequency tolerance of ±10 ppm and a load capacitance of 8 pF. The equivalent series resistance (ESR) is specified at 100 Ohms. The component utilizes a hermetically sealed ceramic surface-mount package with four solderable terminals, designated as 4-SMD, No Lead. This design ensures stable oscillation performance suitable for precision timing applications requiring high reliability.

Crystals Feature Summary

• Hermetically sealed ceramic SMD package construction
• Fundamental mode crystal design for stable operation
• High frequency stability with ±10 ppm tolerance

Crystals Applications

• Embedded communication systems
• Precision timing circuits
• Microcontroller clock sources

Crystals Procurement Notes

Verify the specific ordering suffix to confirm packaging configuration, such as tape and reel quantities versus bulk packaging. Ensure that the selected variant matches the required load capacitance and ESR specifications for the target circuit design. Cross-reference the manufacturer datasheet for handling instructions related to moisture sensitivity levels and reflow soldering profiles to maintain component integrity during assembly processes.

Crystals Selection Notes

Select this component when a 27 MHz reference signal with tight frequency tolerance is required. The 8 pF load capacitance must match the oscillator circuit requirements to ensure accurate frequency generation. Consider the hermetically sealed ceramic package for environments demanding robust protection against environmental factors compared to standard epoxy-sealed alternatives.

Crystals Part Context

This part belongs to the CTS 402 series of surface-mount crystals. The series offers various frequency options and tolerance grades within a compact footprint. The 402F27012IKR specifically addresses applications needing 27 MHz output with enhanced stability compared to standard commercial grade crystals, fitting into designs prioritizing long-term frequency accuracy.

Crystals Replacement Considerations

Direct substitutes include other 27 MHz crystals with identical 8 pF load capacitance and similar ESR values. Verify pin compatibility and package dimensions before substitution. Alternative parts from the same manufacturer family may offer different tolerance grades or packaging options while maintaining electrical equivalence.