403I35D28M37500

Crystals Overview

The CTS-Frequency Controls part number 403I35D28M37500 is a surface-mount crystal resonator operating at a fundamental frequency of 28.375 MHz. It features a load capacitance of 18 pF and an equivalent series resistance (ESR) of 60 Ohms. The component offers a frequency tolerance of ±30 ppm and a stability of ±50 ppm. Housed in a compact 4-SMD, No Lead package with dimensions of 3.20mm x 2.50mm x 0.75mm maximum height, it supports a wide operating temperature range from -40°C to +85°C.

Crystals Feature Summary

• Fundamental mode operation for precise timing applications
• Compact 4-SMD no-lead surface mount design
• Wide industrial temperature range capability

Crystals Applications

• Wireless infrastructure equipment
• Wireline core networking systems
• Microcontroller clock sources

Crystals Procurement Notes

Verify the specific suffix 'D' against the required load capacitance specification, as this variant utilizes 18pF rather than the common 20pF standard found in other series members. Confirm RoHS3 compliance status prior to final integration. Ensure that the 60 Ohm ESR value aligns with the oscillator circuit design constraints to guarantee reliable startup and stable oscillation performance.

Crystals Selection Notes

Select this component when a 28.375 MHz fundamental frequency is required within a small 3.2x2.5mm footprint. The 18pF load capacitance distinguishes it from similar 20pF variants, necessitating careful matching with the host circuit's stray capacitance. Consider the ±30ppm tolerance for applications requiring moderate precision timing synchronization without the need for higher-cost oven-controlled solutions.

Crystals Part Context

This component belongs to the CTS 403 Series of surface-mount crystals. The series provides various frequencies and packages optimized for high-volume manufacturing. The 403I35D28M37500 specifically addresses the need for a standard 28.375 MHz clock signal in space-constrained electronic designs, offering a balance between size, cost, and performance for general-purpose timing needs.

Crystals Replacement Considerations

Public confirmed substitute part numbers include 403C35D28M37500. Verify that the replacement maintains the identical 18pF load capacitance and 60 Ohm ESR specifications to ensure circuit compatibility.