402F27122IAT

Crystals Overview

The CTS-Frequency Controls 402F27122IAT is a surface-mount crystal oscillator operating at a fundamental frequency of 27.12 MHz. It features a frequency stability and tolerance of ±20 ppm, ensuring consistent timing performance across applications. The component utilizes a load capacitance of 10 pF and exhibits an equivalent series resistance (ESR) of 100 Ohms. Designed for reliability, it supports operation within a temperature range of -40°C to +85°C. The device is housed in a compact 4-SMD, No Lead package with dimensions of 3.2 mm x 2.5 mm x 0.9 mm, suitable for automated assembly processes.

Crystals Feature Summary

• Fundamental mode crystal operation providing stable oscillation at 27.12 MHz
• Wide industrial temperature range capability from -40°C to +85°C
• Compact 4-SMD no-lead surface mount package design
• Low equivalent series resistance of 100 Ohms for efficient circuit integration

Crystals Applications

• Industrial control systems requiring precise timing references
• Telecommunications equipment utilizing standard clock frequencies
• Consumer electronics with space-constrained PCB layouts
• Automotive infotainment and instrumentation modules

Crystals Procurement Notes

Verify the specific suffix 'IAT' against the manufacturer's official datasheet to confirm the exact load capacitance and packaging configuration. Ensure that the required operating temperature range aligns with the specified -40°C to +85°C limits for your application environment. Cross-reference the 4-SMD package dimensions with your PCB footprint library to guarantee mechanical compatibility during assembly.

Crystals Selection Notes

Select this component when a fundamental mode crystal is preferred over overtone modes for lower phase noise requirements at 27.12 MHz. The 10 pF load capacitance must match the oscillator circuit design to achieve the specified ±20 ppm accuracy. Consider the 100 Ohm ESR value when evaluating drive level sensitivity to prevent frequency pulling or amplitude instability under varying load conditions.

Crystals Part Context

This part belongs to the CTS 402 series of surface-mount crystals, designed for general-purpose timing applications. The series offers various frequency options and package sizes to accommodate different board space constraints. The 402F27122IAT specifically addresses the need for a widely used 27.12 MHz reference point in digital signal processing and communication interfaces.

Crystals Replacement Considerations

Direct substitutes include other manufacturers' 27.12 MHz crystals with identical 10 pF load capacitance and 4-SMD no-lead footprints. Verify that alternative parts meet the same ±20 ppm stability and -40°C to +85°C temperature specifications. Ensure the replacement maintains the 100 Ohm ESR characteristic to preserve circuit performance.