405I35D40M00000

Crystals Overview

The CTS-Frequency Controls 405I35D40M00000 is a fundamental mode quartz crystal resonator designed for surface-mount applications. It operates at a nominal frequency of 40 MHz with a frequency tolerance of ±30 ppm and stability of ±50 ppm. The component features an 18 pF load capacitance and an equivalent series resistance (ESR) of 50 Ohms. Housed in a compact 4-SMD, no-lead package measuring 5.00 mm x 3.20 mm with a maximum height of 0.85 mm, it supports industrial temperature ranges from -40°C to +85°C.

Crystals Feature Summary

• Fundamental mode operation ensures precise frequency generation
• Industrial-grade temperature range suitability
• Compact surface-mount footprint for automated assembly

Crystals Applications

• Microcontroller clock circuits
• Communication interface timing
• Industrial control systems

Crystals Procurement Notes

Verify the specific suffix 'I' indicates the extended industrial temperature range (-40°C to +85°C) compared to commercial variants. Confirm that the 18pF load capacitance matches the target oscillator circuit design requirements. Ensure the 4-SMD package dimensions align with the PCB land pattern specifications to prevent soldering defects during reflow processes.

Crystals Selection Notes

Select this component when an industrial temperature rating is required for 40 MHz timing applications. Compare ESR values against the oscillator driver strength to ensure reliable startup. Consider the ±30 ppm tolerance if higher precision is needed, which may require alternative part numbers within the 405 series offering tighter frequency accuracy specifications.

Crystals Part Context

This part belongs to the CTS 405 series of surface-mount crystals. The series offers various frequencies and packages. The 'I' suffix typically denotes industrial temperature performance, while 'C' denotes commercial range. This specific model provides a balance of size and performance for general-purpose digital timing needs.

Crystals Replacement Considerations

Direct substitute: 405C35D40M00000. Note that the 'C' suffix usually indicates a commercial temperature range (-20°C to +70°C), which differs from the industrial range of the original part. Verify thermal requirements before substitution.