70F251AF-RC

Fixed Inductors Overview

The Bourns 70F251AF-RC is a fixed inductor from the discontinued 70F Series of varnished chokes. It features a ferrite core and through-hole mounting configuration. The component has an inductance of 250 mH, a DC resistance of 468 Ohms, and a saturation current rating of 37 mA. It is RoHS3 compliant and lead-free.

Fixed Inductors Feature Summary

• Varnish-coated construction for environmental protection
• Ferrite core design for stable inductive performance
• Through-hole axial lead termination style

Fixed Inductors Applications

• General purpose filtering circuits
• Signal conditioning applications
• Industrial control equipment

Fixed Inductors Procurement Notes

Verify availability as the 70F Series is officially discontinued by Bourns Inc., with only specific part numbers retained. Confirm that the 70F251AF-RC is not among the surviving variants (70F101AF-RC or 70F502AF-RC). Ensure compliance with RoHS3 standards and check for alternative components if long-term supply is required.

Fixed Inductors Selection Notes

Select this component only if its high DC resistance and low saturation current align with specific circuit requirements. Consider the discontinuation status when planning for future production runs. Verify physical dimensions and lead spacing against the target PCB layout before finalizing the design choice.

Fixed Inductors Part Context

This part belongs to the Bourns 70F Series of varnished chokes, which are now largely phased out. The series was designed for general-purpose inductive applications requiring robust packaging. Most model numbers have been removed from the active product line, leaving limited availability for remaining stock.

Fixed Inductors Replacement Considerations

Check datasheets for 70F101AF-RC and 70F502AF-RC as potential family members, though values differ significantly. Search for equivalent fixed inductors with similar 250 mH inductance and axial lead configurations from other manufacturers if substitution is necessary.