435F270Y5IAT

Crystals Overview

The CTS-Frequency Controls 435F270Y5IAT is a surface-mount MHz crystal designed for frequency control applications. It operates at a fundamental frequency of 27 MHz with a specified load capacitance of 10 pF. The component exhibits a frequency tolerance of ±25 ppm and an equivalent series resistance (ESR) of 40 Ohms. It utilizes a 2-SMD, no-lead package with dimensions of 5.00 mm in length and 3.20 mm in width. The device supports base harmonic operation mode and is suitable for surface mount installation.

Crystals Feature Summary

• Supports base harmonic operation mode for precise frequency generation
• Utilizes a compact 2-pad surface mount package design
• Provides stable frequency performance with defined load capacitance requirements

Crystals Applications

• General purpose frequency reference circuits
• Microcontroller clock sources
• Communication interface timing

Crystals Procurement Notes

Verify the specific load capacitance requirement of 10 pF against the target circuit design to ensure accurate frequency operation. Confirm that the PCB footprint matches the 5.00mm x 3.20mm SMD package dimensions. Ensure the application environment remains within the standard operating temperature range for this component type. Cross-reference the ESR value of 40 Ohms with oscillator specifications if applicable.

Crystals Selection Notes

Select this component when a 27 MHz fundamental frequency crystal is required with a ±25 ppm tolerance. The 10 pF load capacitance specification must align with the host oscillator circuit's capacitive load. The 40 Ohm ESR is a critical parameter for ensuring proper oscillation startup and stability. Consider the 2-SMD package size for space-constrained board layouts compared to larger through-hole alternatives.

Crystals Part Context

This part belongs to the 435 series of MHz crystals manufactured by CTS-Frequency Controls. The series offers various frequency options in a standardized small surface-mount form factor. These components are designed for integration into digital systems requiring reliable clock signals. The 435 series emphasizes consistency in electrical characteristics across different frequency variants within the product line.

Crystals Replacement Considerations

Direct substitutes include other 27 MHz crystals from the same manufacturer series with identical 10 pF load capacitance and similar ESR values. Verify that any replacement maintains the 2-SMD no-lead package profile to ensure mechanical compatibility. Check for matching frequency tolerance specifications to prevent timing errors in sensitive applications.