4448R-118L

Overview

The Delevan 4448R-118L is an unshielded two-coil inductor array designed for surface mount technology. It features a toroidal core construction with a nominal inductance of 20 µH per coil when connected in parallel, and 80 µH when connected in series. The component has a tolerance of ±15% and a maximum DC resistance of 85 mΩ. It supports a maximum DC current of 1.5 A and operates within a temperature range of -55°C to 125°C. The package dimensions are 13.71 mm in length, 13.71 mm in width, and 7.87 mm in height.

Feature Summary

• Dual-coil configuration allowing flexible series or parallel circuit integration
• Toroidal magnetic core design for efficient energy storage
• Surface mount termination for automated PCB assembly
• High-current capability suitable for power filtering applications

Applications

• DC-DC converter input and output filtering
• Power supply common mode noise suppression
• Signal transformer arrays in power electronics
• EMI filtering in high-density circuit boards

Procurement Notes

Verify the specific suffix designation to confirm electrical tolerances and packaging format. Confirm RoHS compliance status as manufacturing batches may vary. Ensure the ordering quantity aligns with the manufacturer's standard reel size requirements. Cross-reference the datasheet revision date to guarantee compatibility with current design specifications.

Selection Notes

Select this component when dual independent inductors are required in a single footprint. The toroidal shape offers higher efficiency compared to shielded alternatives. Consider the 1.5 A current rating against peak load requirements. Verify that the unshielded nature does not interfere with nearby sensitive components.

Part Context

This part belongs to the 4448R series of coupled inductors from Delevan. The series utilizes toroidal cores to provide high Q factors and low DC resistance. These components are categorized under power inductors and signal transformers, targeting applications requiring compact, high-performance magnetic solutions for modern electronic systems.

Replacement Considerations

The 4448-118L serves as a direct functional substitute within the same product family. Both parts share identical physical dimensions and mounting styles. Verify that the electrical parameters of the replacement meet the original design constraints before implementation.