403I35E28M37500

Crystals Overview

The CTS-Frequency Controls 403I35E28M37500 is a surface-mount fundamental mode quartz crystal resonator operating at 28.375 MHz. It features a frequency tolerance of ±30ppm and stability of ±50ppm with a 20pF load capacitance. The component utilizes a 4-SMD, No Lead package measuring 3.20mm x 2.50mm x 0.75mm maximum height. It exhibits an equivalent series resistance (ESR) of 60 Ohms and supports an industrial temperature range of -40°C to +85°C.

Crystals Feature Summary

• Fundamental mode operation for precise frequency generation
• Surface mount design compatible with automated assembly processes
• Industrial grade temperature rating for extended operational environments

Crystals Applications

• Clock signal generation in microcontroller systems
• Timing references for communication interfaces
• Frequency control in embedded electronic devices

Crystals Procurement Notes

Verify the specific suffix 'I' indicates the required industrial temperature range (-40°C to +85°C) compared to commercial variants. Confirm that the 4-SMD footprint matches the target PCB land pattern dimensions. Ensure the 20pF load capacitance aligns with the oscillator circuit requirements to maintain specified frequency accuracy.

Crystals Selection Notes

Select this component when a 28.375 MHz reference is required within an industrial thermal environment. The 403 series offers a compact form factor suitable for space-constrained designs. Consider the ESR value relative to the oscillator driver strength to ensure reliable startup conditions.

Crystals Part Context

This part belongs to the CTS 403 Series of surface-mount crystals. The series provides various frequencies in standardized packages. The 'I' designation typically denotes industrial temperature performance, distinguishing it from commercial or automotive grades within the same physical footprint family.

Crystals Replacement Considerations

Direct substitutes include other manufacturers offering identical 28.375 MHz crystals in 3.2x2.5mm SMD packages with matching electrical parameters. Verify pin compatibility and mounting orientation before substitution.