403I35E26M00000

Crystals Overview

The CTS-Frequency Controls 403I35E26M00000 is a surface-mount quartz crystal resonator operating at a fundamental frequency of 26 MHz. It features a frequency tolerance of ±30 ppm and a frequency stability of ±50 ppm. The component utilizes a 20 pF load capacitance and exhibits an equivalent series resistance (ESR) of 60 Ohms. It is housed in a compact 4-SMD, No Lead package with dimensions of 3.20 mm x 2.50 mm and a maximum height of 0.75 mm. Designed for industrial applications, it supports a wide operating temperature range from -40°C to +85°C.

Crystals Feature Summary

• Fundamental mode operation ensures precise frequency generation without overtone complexities.
• Compact 4-SMD no-lead footprint facilitates automated surface-mount assembly processes.
• Wide industrial temperature rating allows reliable performance in harsh thermal environments.

Crystals Applications

• Microcontroller clock sources requiring stable timing references
• Communication interface circuits such as UART or SPI controllers
• Industrial control systems operating within extended temperature ranges

Crystals Procurement Notes

Verify the specific suffix 'I' indicates the industrial temperature grade (-40°C to +85°C) rather than commercial variants. Confirm the ESR value of 60 Ohms matches the oscillator circuit design requirements. Ensure the 4-SMD 3.2x2.5mm footprint aligns with the PCB land pattern specifications to prevent soldering defects during reflow.

Crystals Selection Notes

Select this component when a 26 MHz fundamental frequency is required with strict ±30 ppm initial tolerance. The 20 pF load capacitance must match the external capacitors in the oscillator circuit to achieve accurate frequency output. Consider the 60 Ohm ESR limit to ensure sufficient loop gain for oscillation startup in low-power designs.

Crystals Part Context

This part belongs to the CTS 403 Series of surface-mount crystals. The series offers various frequencies in standardized small footprints. The 'I' designation typically denotes industrial temperature range compliance, distinguishing it from commercial grade options within the same physical package family.

Crystals Replacement Considerations

Direct substitutes include other 26 MHz crystals with identical 20 pF load capacitance and ≤60 Ohm ESR. Verify that alternative parts support the -40°C to +85°C range if industrial grading is mandatory. Footprint compatibility requires matching the 3.2x2.5mm 4-SMD outline.