CTMC1812SF-101J

Fixed Inductors Overview

The CTMC1812SF-101J is a fixed wire-wound inductor manufactured by Central Technologies. It features an unshielded drum core design with a nominal inductance of 100 µH and a tolerance of ±5%. The component has a maximum DC resistance of 8 Ohms and a rated current of 110 mA. It utilizes a 1812 (4532 Metric) surface-mount package, measuring 4.50mm in length and 3.20mm in width. The device is lead-free and RoHS compliant.

Fixed Inductors Feature Summary

• Unshielded drum core construction for general-purpose applications
• Lead-free and RoHS compliant manufacturing
• Surface-mount technology compatible with standard SMT processes

Fixed Inductors Applications

• Telecommunication equipment filtering
• Computer peripheral circuitry
• TV and VCR signal processing

Fixed Inductors Procurement Notes

Verify the specific suffix 'SF' indicates the unshielded variant distinct from shielded models. Confirm RoHS compliance status matches project requirements. Ensure the 110 mA current rating and 8 Ohm DCR are sufficient for the target circuit load. Validate the 1812 footprint dimensions against the PCB layout to ensure proper solder joint formation and mechanical stability during assembly.

Fixed Inductors Selection Notes

Select this component when an unshielded inductor is required to minimize magnetic interference with nearby sensitive traces. The 100 µH value suits intermediate frequency filtering tasks. Consider the 110 mA current limit carefully; if higher current handling is needed, a different series or larger package size must be evaluated. The unshielded nature may require careful placement relative to other magnetic components.

Fixed Inductors Part Context

This part belongs to the CTMC1812SF series of wire-wound chip inductors from Central Technologies. It shares the 1812 footprint with other variants like the CTMC1812F-101J but differs in shielding characteristics. The series offers various inductance values ranging from low microhenries to higher ranges, all utilizing molded ferrite cores for consistent performance in consumer electronics and telecommunications.

Fixed Inductors Replacement Considerations

Direct substitutes include the CTMC1812F-101J, provided the unshielded characteristic is acceptable. Other 100 µH inductors in the 1812 package from Central Technologies, such as those in the CTHC series, may fit mechanically but require verification of electrical parameters and shielding type.