402F27111CJR

Crystals Overview

The 402F27111CJR is a surface-mount MHz crystal manufactured by CTS-Frequency Controls. It operates at a nominal frequency of 27.12 MHz with a frequency stability and tolerance of ±10ppm. The component features a load capacitance of 9pF and an equivalent series resistance (ESR) of 100 Ohms. Designed for fundamental mode operation, it utilizes a 4-SMD, No Lead package with dimensions of 2.00mm x 1.60mm and a maximum height of 0.55mm. The device supports a standard operating temperature range of -20°C to +70°C.

Crystals Feature Summary

• Fundamental mode quartz crystal resonator designed for precise timing applications
• Compact 4-SMD no-lead surface mount package suitable for automated assembly
• Stable frequency performance with ±10ppm tolerance across the operating temperature range

Crystals Applications

• Clock signal generation in microcontroller systems
• Frequency reference for wireless communication modules
• Timing circuits in consumer electronic devices

Crystals Procurement Notes

Verify the specific suffix 'CJR' against the manufacturer's current datasheet to confirm pinout compatibility and electrical parameters. Ensure the design-in load capacitance matches the specified 9pF requirement. Check for RoHS compliance status and moisture sensitivity level classifications prior to procurement to ensure supply chain readiness and storage handling requirements are met.

Crystals Selection Notes

Select this component when a 27.12 MHz fundamental frequency is required with a 9pF load capacitance. The 100 Ohm ESR value should be compatible with the oscillator circuit design. Consider the 4-SMD footprint constraints and the -20°C to +70°C temperature range suitability for the target application environment compared to higher stability or wider temperature variants.

Crystals Part Context

This part belongs to the CTS 402 Series of surface-mount crystals. The series offers various frequency options and package sizes optimized for high-volume manufacturing. The 402F27111CJR specifically addresses the need for compact timing solutions in space-constrained printed circuit board layouts while maintaining reliable oscillation characteristics for digital logic interfaces.

Crystals Replacement Considerations

Substitutes such as 402F27111CAR or 402F27111CKT may be considered if available, though differences in load capacitance (e.g., 8pF vs 9pF) or packaging must be evaluated for circuit compatibility.