7427603

Overview

The Würth Elektronik 7427603 is an axial leaded ferrite bead from the WE-WAFB series, designed for electromagnetic interference suppression. It exhibits a nominal impedance of 70 Ohms at a test frequency of 100 MHz with a tolerance of ±25%. The component supports a maximum DC current of 3 A and maintains a low maximum DC resistance of 5 mOhms. It operates within a temperature range of -55°C to +125°C. Physical dimensions include a length of 4.5 mm and a diameter of 3.5 mm. The unit weighs approximately 560 mg.

Feature Summary

• Provides effective high-frequency noise attenuation through resistive loss mechanisms in the ferrite material.
• Features an axial leaded construction suitable for through-hole mounting on printed circuit boards.
• Engineered for general electronic equipment applications with robust thermal stability across wide operating ranges.

Applications

• Electromagnetic interference suppression in digital devices
• Signal line filtering in general electronic equipment
• Power supply input/output noise reduction

Procurement Notes

Verify the specific datasheet version and RoHS compliance status directly with the manufacturer or authorized distributors before procurement. Confirm that the axial package dimensions and lead spacing match your PCB layout requirements. Ensure the 3 A current rating and 70 Ohm impedance specifications align with your circuit's operational parameters and noise profile needs.

Selection Notes

Select this component when axial mounting is required for ferrite bead applications. The 70 Ohm impedance at 100 MHz targets common noise frequencies in digital circuits. The 3 A current handling capability makes it suitable for power lines or high-current signal paths where lower impedance surface mount alternatives might be insufficient.

Part Context

This part belongs to the WE-WAFB series of sleeve chokes manufactured by Würth Elektronik. These components are specifically developed for use in general electronic equipment. The series offers various impedance values and current ratings to suit different filtering requirements while maintaining standard axial packaging for easy integration into existing through-hole designs.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Verify compatibility with alternative axial ferrite beads based on impedance, current rating, and physical dimensions if sourcing changes occur.

FAQ

What is the test frequency for the specified impedance?

The impedance of 70 Ohms is measured at a test frequency of 100 MHz.

Is this component shielded?

Yes, the product specifications list the component as shielded.

What is the maximum DC resistance?

The maximum DC resistance is 5 mOhms.