CT0402CSF-39NJ

Fixed Inductors Overview

The CT0402CSF-39NJ is a surface-mount ceramic-core wire-wound inductor from Central Technologies, designed for RF applications. It features a nominal inductance of 0.039 µH with a ±5% tolerance. The component has a DC resistance of 0.46 Ω and a maximum rated current of 0.31 A. It operates within a temperature range of -40 °C to 125 °C and exhibits a minimum quality factor of 26 at the nominal inductance. The self-resonant frequency is specified at 2200 MHz, housed in a standard 0402 rectangular package.

Fixed Inductors Feature Summary

• Utilizes a ceramic core with wire-wound construction for stable RF performance
• Designed specifically for radio frequency inductor applications
• Compliant with lead-free and RoHS standards

Fixed Inductors Applications

• Cellular phones
• Bluetooth devices
• Cable modems

Fixed Inductors Procurement Notes

Verify that the specific part number matches the required inductance value of 0.039 µH and the ±5% tolerance code 'J'. Confirm compliance requirements against project specifications, noting that while this variant is lead-free, other variants in the series may differ. Ensure the 0402 footprint aligns with the PCB design constraints and that the 0.31 A current rating meets the circuit's operational demands.

Fixed Inductors Selection Notes

Select this component when a compact 0402 form factor is required for RF signal processing. The ceramic core construction offers distinct advantages over multilayer types in terms of Q-factor stability at high frequencies. Engineers should consider the 2200 MHz self-resonant frequency to ensure the inductor remains inductive within the target operating band. The low DC resistance supports efficient power handling for the specified current limit.

Fixed Inductors Part Context

This part belongs to the CT0402CSF series of SMD laser-cut inductors manufactured by Central Technologies. The series provides general-purpose inductors optimized for surface-mount technology. The 'CSF' designation indicates the specific construction type and size code, distinguishing it from other series like the CTTFR resistors or different inductor families within the manufacturer's portfolio.

Fixed Inductors Replacement Considerations

Direct substitutes include other CT0402CSF series parts with identical electrical characteristics, such as the CT0402CSF-39NG if tighter tolerance is acceptable, or the CT0402CS-39NJ for non-RoHS compliant environments. Cross-manufacturer replacements require matching the 0.039 µH inductance, 0402 package dimensions, and similar Q-factor and self-resonant frequency parameters.