Through Hole EMI Filter Beads SMB5H

SMB5H Family

SMD EMI Suppression 5-hole Ferrite Bead

Engineered for high-performance electromagnetic interference (EMI) mitigation, the SMB5H family of surface-mount Ferrite Beads delivers reliable noise suppression across diverse electronic systems—from industrial automation to consumer-grade devices. These components are specifically designed to address signal integrity challenges in modern PCB layouts where space efficiency and thermal resilience are critical. The performance of these EMI Filter beads is directly influenced by operating frequency range, impedance requirements, and circuit configuration, making them ideal for applications demanding precision filtering and stable power delivery.

Key Features

• High current handling capability up to 15A ensures robust operation under heavy load conditions
• Ultra-low DC resistance (DCR) enhances DC/DC converter stability and minimizes heat generation
• Compact SMD form factor enables dense board designs while maintaining EMI-grade reliability
• Designed for automated assembly processes with excellent solder joint integrity and mechanical durability
• Available in both surface-mount and through-hole axial configurations for flexible integration options

Detailed Description

The SMB5H series represents an advanced solution for electromagnetic compatibility (EMC) compliance in today’s complex electronic environments. With its five-hole design, this EMI suppression component offers enhanced magnetic flux containment and improved attenuation characteristics over traditional single-hole beads. It is particularly effective at attenuating high-frequency noise in power lines and signal traces, preventing crosstalk and ensuring clean voltage regulation. Each unit undergoes rigorous testing to validate performance across multiple frequencies—typically from 10 MHz to 1 GHz—making it suitable for use in wireless communication modules, switching power supplies, and digital logic circuits.

Applications

This ferrite bead family excels in a wide array of sectors including:

• Power Conversion Systems – Ideal for DC/DC converters found in telecom equipment, LED drivers, and portable radios
• Noise Filtering in Industrial Control Circuits – Used in SCR-based motor drives, programmable logic controllers (PLCs), and track signaling systems
• Consumer Electronics – Enhances signal purity in computer motherboards, hard disk drives, and audio/video interfaces
• Automotive and Aerospace Applications – Provides robust protection against conducted emissions in vehicle ECUs and avionics systems

Whether deployed as standalone filters or integrated into multi-stage EMI suppression networks, the SMB5H series supports seamless compliance with international EMC standards such as EN 55032, FCC Part 15, and CISPR 32.

User Reviews

Engineers across Europe and North America have praised the SMB5H series for its consistent noise reduction capabilities and ease of integration. One user noted, “In our embedded medical device, we saw a 30% improvement in EMI immunity after replacing older axial beads with these SMD ferrites.” Another commented on the thermal performance: “Even during prolonged high-load operation, the temperature rise was minimal compared to other brands.”

Frequently Asked Questions

What makes the SMB5H different from standard EMI filter beads?
The five-hole structure increases magnetic coupling efficiency, resulting in superior high-frequency attenuation and better shielding effectiveness than conventional designs.

Can I use this in place of a through-hole EMI filter?
Yes—if your design allows for SMD mounting, the SMB5H provides equivalent or superior performance in most cases, especially where board space is limited.

Is it suitable for high-temperature environments?
Absolutely—the materials used meet RoHS compliance and can withstand continuous operation up to 150°C, making it ideal for automotive and industrial settings.