402F400XXCJR

Crystals Overview

The CTS-Frequency Controls 402F400XXCJR is a surface-mount MHz crystal operating at a nominal frequency of 40 MHz. It utilizes fundamental mode vibration within the 402 series package, specifically a 4-SMD, No Lead configuration measuring 2.00mm x 1.60mm with a maximum height of 0.022 inches. The component features a load capacitance of 9 pF and an equivalent series resistance (ESR) of 60 Ohms. Frequency stability and tolerance are both rated at ±15 ppm. It supports a standard operating temperature range of -20°C to +70°C and complies with RoHS3 standards.

Crystals Feature Summary

• Surface-mount design in a compact 4-SMD, No Lead package for automated assembly
• Fundamental mode operation ensuring stable oscillation at 40 MHz
• Low equivalent series resistance of 60 Ohms for efficient circuit integration
• Compliance with RoHS3 environmental regulations

Crystals Applications

• High-frequency clock signal generation in digital circuits
• Timing references for microprocessors and microcontrollers
• Communication equipment requiring precise frequency stability
• Consumer electronics utilizing surface-mount technology

Crystals Procurement Notes

Verify the specific suffix 'CJR' corresponds to the tape-and-reel packaging format intended for your manufacturing line. Confirm that the 9 pF load capacitance matches the oscillator circuit design requirements. Ensure the ±15 ppm stability meets the system timing accuracy specifications. Check the 60 Ohm ESR against the driver circuit capabilities to prevent overdriving or startup failures.

Crystals Selection Notes

Select this component when a small form factor is required alongside fundamental mode performance. The 402 series offers a balance between size and electrical characteristics suitable for space-constrained designs. Consider the 9 pF load capacitance requirement carefully, as it dictates the external capacitor values needed for accurate frequency tuning. The 40 MHz frequency is common for data bus clocks and communication interfaces.

Crystals Part Context

This part belongs to the CTS 402 Series of surface-mount crystals, designed for applications demanding reliability in a compact footprint. The series provides various frequency options and load capacitances to suit different oscillator topologies. The 402F400XXCJR specifically addresses the need for 40 MHz timing in SMD-based assemblies, offering a direct replacement for through-hole equivalents where board space is limited.

Crystals Replacement Considerations

• 402F400XXCKR
• 402F400XXCLR

Crystals FAQ

What is the operating mode of the 402F400XXCJR?

It operates in fundamental mode.

What is the physical package type?

It uses a 4-SMD, No Lead package with dimensions of 2.00mm x 1.60mm.