402F40011CJR

Crystals Overview

The CTS-Frequency Controls 402F40011CJR is a fundamental mode quartz crystal resonator designed for surface-mount applications. It operates at a nominal frequency of 40 MHz with a frequency tolerance and stability of ±10ppm. The component features a load capacitance of 9pF and an equivalent series resistance (ESR) of 60 Ohms. It is housed in a compact 4-SMD, No Lead package measuring 2.00mm x 1.60mm with a maximum height of 0.55mm. The device supports a commercial operating temperature range of -20°C to +70°C and complies with RoHS3 standards.

Crystals Feature Summary

• Fundamental mode operation for stable frequency generation
• Compact 4-SMD no-lead surface mount footprint
• RoHS3 compliant environmental construction

Crystals Applications

• General purpose clock signal generation
• Microcontroller oscillator circuits
• Communication module timing references

Crystals Procurement Notes

Verify the specific suffix 'CJR' against the manufacturer's current datasheet to confirm packaging and availability status, as distribution channels may list obsolete or discontinued variants. Cross-reference the ESR and load capacitance values with the target circuit design requirements to ensure proper oscillation startup conditions. Confirm that the commercial temperature range meets the operational environment specifications before finalizing procurement decisions.

Crystals Selection Notes

Select this component when a 40 MHz fundamental frequency is required in a small surface-mount form factor. Ensure the application circuit provides a 9pF load capacitance to maintain the specified ±10ppm accuracy. Consider the 60 Ohm ESR limit when designing the oscillator feedback network. Verify that the -20°C to +70°C temperature range is sufficient for the intended deployment environment compared to industrial or automotive grade alternatives.

Crystals Part Context

This part belongs to the CTS 402 Series of miniature crystals. The series offers various frequencies and packages optimized for space-constrained electronics. The 402F40011CJR specifically targets applications requiring precise timing in consumer and industrial devices where standard through-hole components are impractical due to size constraints.

Crystals Replacement Considerations

Direct substitutes include other 40 MHz crystals from the same series with compatible electrical parameters. Verify package dimensions and pinout compatibility when replacing with alternative manufacturers' parts. Ensure the replacement maintains the 9pF load capacitance and similar ESR characteristics to prevent frequency drift or oscillation failure.