70F473AI-RC

Fixed Inductors Overview

The Bourns Inc. 70F473AI-RC is a fixed wirewound inductor from the 70F Series, designed for through-hole mounting in an axial package. It features an unshielded construction with an inductance of 4.7 mH and a tolerance of ±5%. The component has a maximum DC resistance of 64.8 ohms and a DC current rating of 48 mA. It operates within a temperature range of -55°C to 105°C and is tested at a frequency of 1 kHz.

Fixed Inductors Feature Summary

• Unshielded wirewound construction for standard signal applications
• Axial through-hole mounting configuration
• Chemical nickel immersion gold (ENIG) terminal finish

Fixed Inductors Applications

• Signal line filtering in portable electronics
• General-purpose circuit protection
• Low-power consumer device signal conditioning

Fixed Inductors Procurement Notes

Verify that the specific suffix 'AI' corresponds to the ENIG terminal finish as documented in official Bourns datasheets. Confirm that the axial package dimensions align with the PCB layout requirements. Ensure the 48 mA current rating meets the operational limits of the target circuit without derating issues. Cross-reference the 64.8 ohm DC resistance against system power budget constraints.

Fixed Inductors Selection Notes

Select this component when an unshielded axial inductor is required for low-current signal paths. The high DC resistance of 64.8 ohms distinguishes it from low-resistance power chokes, making it suitable for impedance matching or specific filtering roles rather than power storage. The 4.7 mH value provides significant reactance at lower frequencies.

Fixed Inductors Part Context

This part belongs to the Bourns 70F Series of fixed inductors. These components are characterized by their wirewound technology and axial leaded format. The series is engineered for general electronic applications where space is less constrained than in surface-mount designs, offering reliable performance for signal processing tasks.

Fixed Inductors Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing axial inductor footprints before considering alternative manufacturers.