SMB2.5-2

Overview

The Delevan SMB2.5-2 is a surface-mount shielded ferrite bead designed for high-current noise suppression in compact electronic assemblies. It features a J-lead package configuration that facilitates reliable soldering to printed circuit boards while maintaining structural integrity under thermal stress. The component provides an impedance of 490 Ohms at a test frequency of 100 MHz, effectively attenuating high-frequency electromagnetic interference. It supports a maximum DC current of 9.5 A with a maximum DC resistance of 5 mOhms, ensuring minimal signal loss in power lines. The operating temperature range spans from -40°C to 125°C, allowing deployment in demanding environmental conditions.

Feature Summary

• Shielded construction minimizes magnetic field radiation and cross-talk between adjacent components
• J-lead surface mount design offers robust mechanical stability and simplified PCB footprint requirements
• High current handling capability suitable for power supply filtering applications

Applications

• Noise suppression in high-current DC power distribution networks
• Electromagnetic interference filtering in compact consumer electronics
• Signal integrity enhancement in automotive electronic control units

Procurement Notes

Verify the specific impedance tolerance and current rating against your circuit design requirements before ordering. Confirm RoHS compliance status if your manufacturing process mandates restricted substance limitations. Ensure the J-lead footprint matches your PCB layout exactly to avoid assembly issues. Cross-reference the datasheet version to confirm the latest electrical specifications and mechanical dimensions are applied to your procurement batch.

Selection Notes

Select this component when space constraints require a shielded ferrite bead capable of handling currents up to 9.5 A. The J-lead package is preferred over standard SMD packages for improved mechanical durability during reflow soldering. Consider the 490 Ohm impedance at 100 MHz to ensure adequate attenuation for your specific noise spectrum. Evaluate the thermal performance within the -40°C to 125°C range to guarantee reliability across your intended operating environment.

Part Context

The SMB2.5-2 belongs to Delevan's SMB2.5 series of shield beads, which are engineered for compactness and effectiveness in surface-mount suppressor applications. This series utilizes ferrite materials optimized for high-frequency noise absorption. The SMB2.5-2 variant specifically denotes the impedance value and package type within this family, distinguishing it from other models with different current ratings or impedance characteristics.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Verify compatibility with any alternative components by matching the J-lead footprint, 9.5 A current rating, and 490 Ohm impedance at 100 MHz. Ensure any replacement maintains the same shielding effectiveness and temperature range specifications.