CT0402CSF-20NJ

Overview

The CT0402CSF-20NJ is a fixed surface-mount inductor manufactured by Central Technologies. It features a nominal inductance of 20 nH with a tolerance of ±5%. The component utilizes a ceramic core and wire-wound construction within a standard 0402 package. Key electrical specifications include a maximum DC resistance of 250 milliohms, a self-resonant frequency of 3000 MHz, and a minimum quality factor of 10 at the rated inductance. It supports an operating temperature range from -40 °C to +85 °C and carries RoHS3 compliance.

Feature Summary

• Wire-wound construction on a ceramic core for stable RF performance
• Compact 0402 surface-mount footprint suitable for high-density PCB layouts
• High self-resonant frequency capability for microwave applications

Applications

• RF matching networks
• Impedance matching circuits
• Filtering applications in communication devices

Procurement Notes

Verify RoHS3 compliance status and lead times through authorized distributors. Confirm that the specific ordering suffix matches the required tolerance code. Ensure storage conditions adhere to manufacturer guidelines to maintain solderability and prevent moisture absorption prior to reflow processes.

Selection Notes

Select this component when a low-inductance value near 20 nH is required for RF signal paths. The ceramic core offers stability compared to air cores, while the wire-wound design provides higher Q factors than multilayer alternatives. Consider the 0402 size constraints and thermal limits during circuit design.

Part Context

This part belongs to the CT0402CSF series of general-purpose chip inductors. The series covers various inductance values ranging from 1 nH to 68 nH, all housed in the 0402 SMD package. These components are designed for use in consumer electronics, mobile phones, and other portable devices requiring compact passive components.

Replacement Considerations

Direct substitutes may include other 20 nH ±5% inductors in 0402 packages from manufacturers such as Murata or TDK. Verify that replacement parts match the 250 mΩ DCR limit and 3000 MHz SRF requirements to ensure circuit compatibility.