7427605

Overview

The Würth Elektronik 7427605 is an axial leaded ferrite bead from the WE-WAFB series, designed for electromagnetic interference suppression. It exhibits a nominal impedance of 100 Ohms at a test frequency of 100 MHz and supports a maximum DC current rating of 3 Amperes. The component features a maximum DC resistance of 5 milliohms and operates within a temperature range of -55°C to +125°C. Packaged in axial configuration, it provides effective noise filtering for power lines and signal traces in compact electronic assemblies.

Feature Summary

• Provides high-impedance attenuation for radio frequency noise on conductors
• Supports continuous direct current loads up to 3 Amperes
• Features low DC resistance to minimize power loss in signal paths

Applications

• EMI suppression on power supply input lines
• Noise filtering for high-current signal cables
• Common mode noise reduction in industrial control systems

Procurement Notes

Verify the specific impedance tolerance and current derating curves against the official datasheet before finalizing design integration. Confirm that the axial lead dimensions match the target PCB footprint or cable assembly requirements. Ensure the operating environment remains within the specified -55°C to +125°C thermal limits to maintain performance stability.

Selection Notes

Select this component when axial mounting is required for robust mechanical connection in high-current applications. The 100 Ohm impedance at 100 MHz targets common broadband noise frequencies. Compare with surface mount alternatives if space constraints dictate, but prioritize this part for applications requiring through-hole reliability and higher current handling capabilities.

Part Context

This ferrite bead belongs to the WE-WAFB series, which specializes in axial leaded components for EMI/RFI suppression. The series offers various impedance values tailored for different frequency ranges and current ratings. Wurth Elektronik designs these beads to meet automotive and industrial standards, ensuring reliable noise mitigation in demanding environments where traditional surface mount solutions may be insufficient.

Replacement Considerations

Cross-reference with other axial ferrite beads offering similar 100 Ohm impedance at 100 MHz and 3A current ratings. Verify physical lead spacing and overall length compatibility. Ensure equivalent thermal and electrical specifications are met by potential substitutes.