CTMC1210SF-R22K

Fixed Inductors Overview

The CTMC1210SF-R22K is a fixed inductor manufactured by Central Technologies, designed for surface-mount applications. It features a ferrite core and wire-wound construction within a 1210 (3225 metric) package measuring 3.2 x 2.5 x 2.2 mm. The component provides an inductance of 0.22 µH with a tolerance of ±10%. Key electrical specifications include a maximum DC resistance of 0.32 Ω, a self-resonant frequency of 560 MHz, and a quality factor of 30. It supports a current rating of 450 mA and is compliant with RoHS standards.

Fixed Inductors Feature Summary

• Surface-mount design utilizing a molded chip structure with a ferrite core
• RoHS compliant lead-free construction suitable for modern assembly processes
• High self-resonant frequency capability for RF signal handling

Fixed Inductors Applications

• Television sets
• Video cassette recorders
• Disk drives
• Computer peripherals
• Telecommunication devices

Fixed Inductors Procurement Notes

Verify the specific suffix 'SF' to confirm lead-free status and RoHS compliance, as standard variants may differ. Ensure the ordering code includes the correct tolerance designation, typically 'J' for ±5% or 'K' for ±10%, although the model number implies a specific configuration. Confirm that the 1210 package dimensions align with the target PCB footprint requirements before finalizing procurement.

Fixed Inductors Selection Notes

Select this component when a compact surface-mount inductor with low DC resistance is required for RF circuits. The 0.22 µH value and 560 MHz self-resonant frequency make it suitable for high-frequency filtering. Consider the 450 mA current limit to ensure adequate headroom for the application's operating conditions. The molded construction offers mechanical stability compared to unshielded alternatives.

Fixed Inductors Part Context

This part belongs to the CTMC1210 series of wire-wound chip inductors from Central Technologies. The series spans a wide range of inductance values from 0.01 µH to 330 µH. The 'SF' designation indicates a specific variant within this family, distinguished by its lead-free composition and surface-mount form factor, catering to general-purpose electronic applications.

Fixed Inductors Replacement Considerations

Direct substitutes within the same series include other CTMC1210SF variants with different inductance values but identical package and electrical characteristics. Cross-model replacements require matching the 1210 footprint, 0.22 µH nominal inductance, and similar current ratings.