7105-RC

Overview

The Bourns 7105-RC is a through-hole common mode choke from the 7100 series, designed for power line applications. It features a ferrite core with an inductance of 4250 µH (4.25 mH) and a maximum DC current rating of 1 A. The component exhibits a maximum DC resistance of 125 mΩ and operates within a temperature range of -55°C to +105°C. It provides high impedance at low frequencies and offers a dielectric strength of 3750 Vrms to reduce conductive EMI emissions.

Feature Summary

• Reduces conductive electromagnetic interference (EMI) emissions
• Provides high impedance at low frequencies
• Features high current capacity for robust performance

Applications

• Power supply input filtering
• Conductive EMI suppression circuits
• Common mode noise reduction in power lines

Procurement Notes

Verify the specific datasheet version for the 7105-RC to confirm exact electrical tolerances and physical dimensions. Ensure compatibility with through-hole mounting requirements on the target PCB. Cross-reference the manufacturer's official documentation for any updates regarding RoHS compliance status or pin configuration changes before finalizing procurement orders.

Selection Notes

Select this component when high inductance is required for low-frequency noise attenuation in power applications. The 1 A current rating suits moderate power levels, while the 125 mΩ DCR minimizes voltage drop. Consider the through-hole package for mechanical stability in environments subject to vibration or thermal stress compared to surface-mount alternatives.

Part Context

This part belongs to Bourns' 7100 series of leaded power inductors. These components are engineered for general-purpose power line filtering. The series utilizes ferrite cores to achieve high magnetic permeability, enabling effective common mode choke performance in compact radial leaded packages suitable for standard PCB assembly processes.

Replacement Considerations

Check for direct substitutes within the Bourns 7100 series that match the 4250 µH inductance and 1 A current rating. Verify that alternative common mode chokes maintain similar dielectric strength and operating temperature ranges to ensure circuit reliability without redesigning the layout.