403C35E28M37500

Crystals Overview

The CTS-Frequency Controls 403C35E28M37500 is a surface-mount fundamental mode crystal unit designed for precision timing applications. It operates at a nominal frequency of 28.375 MHz with a frequency tolerance of ±30 ppm and stability of ±50 ppm. The component features a load capacitance of 20 pF and an equivalent series resistance (ESR) of 60 Ohms. It utilizes a 4-SMD, No Lead package with dimensions of 3.20mm x 2.50mm and a maximum height of 0.75mm. The device supports operation within a temperature range of -20°C to +70°C and complies with RoHS3 standards.

Crystals Feature Summary

• Fundamental resonance mode operation for stable frequency generation
• Surface-mount construction in a compact 4-SMD no-lead package
• Integrated enable/disable functionality for power management
• Compliance with RoHS3 environmental regulations

Crystals Applications

• Clock signal generation for microprocessors and digital logic circuits
• Timing references for communication interfaces such as UART and SPI
• Frequency synthesis in wireless transceivers and modems
• Real-time clock modules requiring precise timekeeping
• Embedded systems and IoT devices needing low-power oscillation

Crystals Procurement Notes

Verify the specific suffix 'E' indicates the required pin configuration and electrical parameters against the official datasheet. Confirm that the 20pF load capacitance matches the target circuit design requirements. Ensure the operating temperature range of -20°C to +70°C is sufficient for the intended application environment. Check for any recent obsolescence notices or lifecycle changes from the manufacturer before finalizing procurement plans.

Crystals Selection Notes

Select this component when a fundamental mode crystal with 28.375 MHz frequency and 20pF load capacitance is required. Consider the 60 Ohm ESR value for oscillator circuit compatibility. The 4-SMD package size suits space-constrained PCB layouts. Evaluate the ±30 ppm tolerance against system jitter requirements. Compare against alternative packages if higher thermal stability or different mounting constraints are necessary.

Crystals Part Context

This part belongs to the CTS 403 Series of surface-mount crystals. It shares the same footprint and general characteristics with other frequencies in the series, differing primarily in resonant frequency and specific electrical parameters. The series is designed for high-volume manufacturing and offers consistent performance across various consumer and industrial electronics applications.

Crystals Replacement Considerations

Direct substitutes include 403I35E28M37500. Verify pinout compatibility and electrical specifications before substitution. Cross-reference with other manufacturers' equivalents ensuring identical frequency, load capacitance, and package dimensions.