402F400XXCJT

Crystals Overview

The CTS-Frequency Controls 402F400XXCJT is a surface-mount quartz crystal resonator operating at a fundamental frequency of 40 MHz. It features a load capacitance of 9 pF and a frequency tolerance of ±15 ppm. The component exhibits an equivalent series resistance (ESR) of 60 Ohms and is housed in a compact 4-SMD, no-lead package with dimensions of 2.00 mm x 1.60 mm x 0.55 mm maximum height. Designed for base mode operation, it supports a commercial temperature range of -20°C to +70°C and complies with RoHS3 standards.

Crystals Feature Summary

• Compact 4-SMD footprint suitable for space-constrained surface mount applications
• Fundamental mode operation providing stable frequency generation
• Compliant with RoHS3 environmental regulations

Crystals Applications

• General purpose clock signal generation in digital circuits
• Microcontroller and microprocessor system timing references
• Communication interface modules requiring precise frequency stability

Crystals Procurement Notes

Verify the specific suffix requirements against your design specifications, as variations exist within the 402F400XX series regarding load capacitance and tolerance. Confirm availability status directly with authorized distributors, as supply levels fluctuate. Ensure that the oscillator circuit design accounts for the 60 Ohm ESR value to maintain proper drive level and startup conditions. Cross-reference the exact part number with the manufacturer's latest documentation to confirm current production status and compliance certifications.

Crystals Selection Notes

Select this component when a 40 MHz fundamental frequency with ±15 ppm stability is required in a small SMD package. The 9 pF load capacitance must match the external capacitors specified by the host oscillator circuit. Consider the 60 Ohm ESR limit when evaluating oscillator gain margins. This part is appropriate for commercial temperature applications ranging from -20°C to +70°C. Verify that the physical dimensions fit within the designated PCB land pattern area.

Crystals Part Context

This component belongs to the CTS 402 series of surface-mount crystals, which are designed for general electronic applications. The series offers various frequencies and package sizes to support diverse design needs. The 402F400XXCJT specifically targets applications requiring a 40 MHz reference in a standard 4-pin SMD form factor. It represents a standard offering within CTS's portfolio of frequency control products.

Crystals Replacement Considerations

Direct substitutes include 402F400XXCAR and 402F400XXCKR, which share similar electrical characteristics but may differ in packaging or suffix specifications. Verify that any replacement maintains the 40 MHz frequency, 9 pF load capacitance, and 60 Ohm ESR requirements. Ensure the alternative part meets the same thermal and mechanical constraints.