403I35E18M43200

Crystals Overview

The CTS-Frequency Controls 403I35E18M43200 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 stability of ±50 ppm. The component utilizes a load capacitance of 20 pF and exhibits an equivalent series resistance (ESR) of 80 Ohms. Designed for industrial environments, it operates within a temperature range of -40°C to +85°C. The device is housed in a compact 4-SMD, no-lead package measuring 3.2 mm by 2.5 mm with a maximum height of 0.8 mm.

Crystals Feature Summary

• Industrial-grade quartz crystal designed for stable frequency generation across wide temperature variations.
• Compact surface-mount footprint optimized for automated assembly and space-constrained circuit board layouts.
• Fundamental mode operation ensures precise timing signals with specified low equivalent series resistance.

Crystals Applications

• Microcontroller clock sources requiring precise timing synchronization
• Communication interface circuits utilizing standard baud rates
• Industrial control systems operating in extended temperature ranges

Crystals Procurement Notes

Verify the specific suffix 'E' against the manufacturer datasheet to confirm the exact electrical parameters, particularly the ESR value of 80 Ohms, as this distinguishes it from other variants in the 403 series. Ensure the design accounts for the 20 pF load capacitance requirement to maintain the specified ±30 ppm frequency tolerance. Cross-reference the RoHS compliance status directly with the official documentation before finalizing procurement specifications.

Crystals Selection Notes

Select this component when a 18.432 MHz fundamental frequency is required for digital logic or communication interfaces. The 403 series offers a balance of size and performance suitable for general-purpose applications. Consider the 80 Ohm ESR value during oscillator circuit design to ensure proper startup conditions. This part is appropriate for designs needing industrial temperature ratings without requiring the higher precision of oven-controlled oscillators.

Crystals Part Context

This component belongs to the CTS 403 series of surface-mount crystals, which are widely used in consumer and industrial electronics. The series provides various frequencies and packages to support different system requirements. The 403I35E18M43200 specifically addresses the need for a common microcontroller clock frequency in a small form factor, supporting modern PCB density trends while maintaining reliable timing performance.

Crystals Replacement Considerations

Direct substitutes include the 403I35D18M43200, though users must verify if the D suffix alters the ESR or stability specifications compared to the E variant. Other 18.432 MHz crystals in the same 3.2x2.5mm package may be compatible if their electrical parameters match the circuit's oscillator design requirements.