CT0402CSF-1N9K

Overview

The CT0402CSF-1N9K is a general purpose wire-wound chip inductor manufactured by Central Technologies. It features a ceramic core and is housed in a surface-mount 0402 package. The nominal inductance is 1.9 nH with a tolerance of ±10%. The component has a maximum DC resistance of 0.135 Ω, a minimum quality factor of 16 at the test frequency, and a maximum rated current of 0.7 A. It operates within a temperature range of -40 °C to 125 °C.

Feature Summary

• Utilizes a wire-wound construction on a ceramic core for stable inductance.
• Designed for high-current applications within a compact 0402 footprint.
• Compliant with RoHS standards and free of lead.

Applications

• RF circuits
• High current inductor applications
• General purpose filtering

Procurement Notes

Verify the specific tolerance suffix when ordering, as codes such as K denote ±10% while others vary. Confirm that the 0402 package dimensions match the target PCB layout. Ensure the operating environment stays within the specified -40 °C to 125 °C range. Check for lead-free compliance requirements if applicable to the final assembly process.

Selection Notes

Select this component for designs requiring low nanohenry inductance in a small surface-mount form factor. The 0.7 A current rating supports moderate power levels. Consider the 0.135 Ω DC resistance for efficiency calculations. The ceramic core offers stability suitable for general-purpose and RF uses where precise low-value inductance is critical.

Part Context

This part belongs to the CT0402CSF series of wire-wound chip inductors from Central Technologies. The series spans values from 1.0 nH to 120 nH in the 0402 case size. These components are designed for surface-mount technology (SMT) integration into electronic circuits requiring fixed inductance.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.