CTMC1812SF-391J

Fixed Inductors Overview

The CTMC1812SF-391J is a fixed inductor manufactured by Central Technologies, designed for surface-mount applications. It features an unshielded drum core construction with wirewound technology. The component provides an inductance of 390 µH with a tolerance of ±5%. It has a maximum DC resistance of 18 Ohms and supports a current rating of 80 mA. The physical package size is 1812 (4532 Metric), measuring approximately 4.50 mm in length and 3.20 mm in width.

Fixed Inductors Feature Summary

• Unshielded drum core wirewound construction
• Surface-mount 1812 package format
• Ferrite core material for signal filtering

Fixed Inductors Applications

• General purpose signal filtering
• Precision tuning circuits
• Electronic device power management

Fixed Inductors Procurement Notes

Verify the specific datasheet version to confirm exact electrical tolerances and thermal characteristics before integration. Ensure the supply chain source provides original manufacturer documentation to validate RoHS compliance and lead-free status. Cross-reference the part number suffix to confirm the exact inductance value and tolerance grade required for the design.

Fixed Inductors Selection Notes

Select this component when a 390 µH inductance value is required in a compact 1812 footprint. Consider the 80 mA current rating and 18 Ohm DC resistance limits for circuit design. The unshielded design may require layout considerations for electromagnetic interference compared to shielded alternatives.

Fixed Inductors Part Context

This part belongs to the CTMC1812SF series of fixed inductors from Central Technologies. The series utilizes ferrite cores and wirewound techniques suitable for general-purpose electronics. Similar parts in the family include variants with different inductance values such as 12 µH or 150 µH, maintaining the same physical dimensions and mounting style.

Fixed Inductors Replacement Considerations

Direct substitutes within the same series include CTMC1812SF-120J and CTMC1812SF-151J, though these have different inductance values. Verify compatibility with any generic 1812 wirewound inductors having matching 390 µH specifications and similar current ratings.