8120

Overview

The Bourns Inc. 8120-RC is a through-hole common mode choke designed for line filtering applications. It features an inductance of 2.4 mH at 1 kHz and supports a maximum DC current of 17 A. The component has a minimum DC resistance of 8 mOhms and operates within a temperature range starting from -55 C. It provides a dielectric strength of 1500 Vrms, ensuring robust isolation. The single-layer wound construction contributes to its performance in linear and switch-mode power supply environments.

Feature Summary

• Single-layer wound construction for reliable magnetic performance
• High dielectric strength providing enhanced electrical isolation
• Designed for high-current line filtering in compact designs

Applications

• Linear power supplies
• Switch-mode power supplies
• Line noise filtering

Procurement Notes

Verify the exact part number suffix, such as -RC, against the manufacturer's official datasheet to ensure correct specifications. Confirm that the required inductance, current rating, and package type match the design requirements before ordering. Cross-reference with authorized distributors to validate authenticity and availability.

Selection Notes

Select this component when high current handling and low DC resistance are critical for power integrity. Ensure the operating environment stays within the specified temperature limits. Verify that the through-hole mounting style fits the PCB layout constraints. Compare the inductance value against the target frequency response requirements for effective common mode noise suppression.

Part Context

Bourns Inc. manufactures a broad portfolio of magnetic components, including inductors and chokes for various industrial and consumer applications. The 8120 series falls under their common mode inductor lineup, which emphasizes reliability and compact form factors. These components are integral to maintaining signal integrity and reducing electromagnetic interference in power electronics systems.

Replacement Considerations

Consult the official Bourns datasheet for direct substitute part numbers. Verify that any alternative component matches the 2.4 mH inductance, 17 A current rating, and 8 mOhm DCR specifications. Ensure physical dimensions and pin configurations are compatible with existing PCB footprints.