445I35A27M00000

Crystals Overview

The CTS-Frequency Controls part number 445I35A27M00000 is a surface-mount quartz crystal resonator operating at a fundamental frequency of 27.0000 MHz. It features a load capacitance of 10 pF and a frequency tolerance of ±20 ppm, with a stability of ±30 ppm. The device has an equivalent series resistance (ESR) of 40 Ohms and operates within a temperature range of -40°C to +85°C. It utilizes a 2-SMD, no-lead package measuring 5.00 mm in length, 3.20 mm in width, and 1.35 mm in maximum height.

Crystals Feature Summary

• Fundamental mode operation for precise frequency generation
• Wide industrial temperature range capability
• Compact surface-mount footprint for automated assembly

Crystals Applications

• Clock signal generation for microcontrollers
• RF transmitter and receiver circuits
• Wireless communication modules

Crystals Procurement Notes

Verify the specific suffix 'A' indicates the 10 pF load capacitance variant, as other suffixes in the 445 series may specify different values such as 18 pF or 20 pF. Confirm that the 40 Ohm ESR matches the oscillator circuit design requirements. Ensure the industrial temperature rating aligns with the operational environment constraints of the final application.

Crystals Selection Notes

Select this component when a 27 MHz fundamental frequency is required with a compact 5.0 x 3.2 mm SMD footprint. The 10 pF load capacitance must match the external capacitors in the oscillator circuit to achieve the specified ±20 ppm tolerance. Consider the wider -40°C to +85°C range if the application exceeds standard commercial limits.

Crystals Part Context

This component belongs to the CTS 445 series of MHz crystals, designed for general-purpose clock applications. The series offers various load capacitances and temperature ranges, with the 'I' suffix typically denoting industrial grade performance. The 445 series provides a balance of size, electrical stability, and cost-effectiveness for consumer and industrial electronics.

Crystals Replacement Considerations

Direct substitutes include other 27 MHz, 10 pF, 2-SMD crystals from CTS with identical dimensions and ESR, such as variants within the same 445 family that share the 5.0x3.2mm package and -40°C to +85°C rating.