742792904

Overview

The Würth Elektronik part number 742792904 is a WE-PF series SMD EMI suppression power ferrite bead. It features a J-lead surface mount package and utilizes NiZn core material for effective noise filtering in wide frequency ranges. The component provides an impedance of 300 Ohms at 100 MHz with a maximum DC resistance of 15 mOhms. It supports a continuous current rating of 7 A and operates within a temperature range of -40°C to +125°C.

Feature Summary

• Magnetically shielded design to prevent interference with nearby components
• NiZn core material optimized for high-frequency EMI suppression
• J-lead surface mount configuration for automated assembly

Applications

• Switch mode power supplies (SMPS)
• Power electronics circuits
• High-current signal line filtering

Procurement Notes

Verify the specific package dimensions and terminal type against the official datasheet before integration. Confirm that the 7 A current rating aligns with the thermal management capabilities of the target PCB layout. Ensure the operating temperature range meets the environmental requirements of the final product application.

Selection Notes

Select this component when high current handling is required alongside significant EMI attenuation. The 300 Ohm impedance at 100 MHz makes it suitable for switching noise reduction. The shielded construction is critical in dense layouts where magnetic coupling must be minimized compared to unshielded alternatives.

Part Context

This component belongs to the WE-PF series, which specializes in SMD power ferrites. The series is engineered for robust performance in demanding power conversion environments. The 742792904 variant specifically addresses applications needing both high current capacity and precise high-frequency noise suppression characteristics.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.