405C35D18M43200

Crystals Overview

The CTS-Frequency Controls 405C35D18M43200 is a surface-mount quartz crystal resonator operating at a fundamental frequency of 18.432 MHz. It features a frequency tolerance of ±30 ppm and a total frequency stability of ±50 ppm over the specified temperature range. The component utilizes an 18 pF load capacitance and exhibits an equivalent series resistance (ESR) of 60 Ohms. Designed for industrial applications, it operates 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 5.00 mm x 3.20 mm x 1.05 mm maximum height.

Crystals Feature Summary

• Fundamental mode operation ensures precise frequency generation for digital clock signals.
• Industrial-grade temperature rating supports reliable performance in harsh environments.
• Surface-mount construction facilitates automated assembly and PCB space optimization.

Crystals Applications

• Microcontroller clock sources
• Communication interface timing circuits
• Industrial control system oscillators

Crystals Procurement Notes

Verify that the specific suffix 'C' denotes the commercial/industrial variant parameters rather than assuming interchangeability with other series codes. Confirm RoHS compliance status through the official datasheet as regulatory requirements may vary by region. Ensure the ordering documentation explicitly references the full part number to avoid confusion with similar frequency or package variants within the 405 series.

Crystals Selection Notes

Select this component when a 18.432 MHz reference is required for standard baud rates or processor clocks. The 18 pF load capacitance must match the oscillator circuit design specifications to ensure accurate frequency output. Consider the 60 Ohm ESR value for drive level sensitivity calculations. Verify that the -40°C to +85°C range meets the environmental demands of the target application compared to standard commercial ranges.

Crystals Part Context

This part belongs to the CTS 405 series of surface-mount crystals, designed for general-purpose timing applications. The series offers various frequencies and package sizes to accommodate different PCB layout constraints. As a fundamental mode crystal, it provides stable oscillation without the need for overtone circuits, simplifying design complexity for common microcontroller and communication interfaces.

Crystals Replacement Considerations

Public confirmed substitute part numbers include 405I35D18M43200 from CTS-Frequency Controls. Verify that the substitute matches the exact load capacitance and ESR values to maintain circuit stability. Cross-reference pin compatibility and footprint dimensions before implementation.