Littelfuse, Inc., a global leader in industrial technology focused on creating safer, more sustainable, and connected solutions, has launched the SMFA Asymmetrical Series Surface-Mount TVS Diode. This first-of-its-kind asymmetrical TVS diode is designed specifically to protect Silicon Carbide (SiC) MOSFET gates from overvoltage events, addressing a critical need as SiC MOSFETs gain popularity for their superior efficiency and high switching speeds compared to traditional Silicon MOSFETs and IGBTs.
Simplified Design with Enhanced Protection
The SMFA Asymmetrical Series introduces a single-component solution that offers improved circuit reliability and reduces design complexity. Unlike conventional protection circuits that rely on multiple Zener or TVS diodes, the SMFA Series effectively mitigates issues such as ringing and overshoot in gate drive circuits, saving valuable PCB space and simplifying layouts.
Ben Huang, Director of Product Marketing at Littelfuse, explains: “The SMFA Asymmetrical TVS Diodes deliver reliable protection for SiC MOSFET gates, replacing multiple components with a single diode. This innovation minimizes PCB space requirements while streamlining circuit design.”
Key Features and Benefits of the SMFA Asymmetrical Series
- Asymmetrical Design: Tailored to match the unique positive and negative gate voltage requirements of SiC MOSFETs, ensuring precise protection.
- Single-Component Solution: Eliminates the need for multiple Zener and TVS diodes, simplifying circuit layouts and reducing the number of components.
- Space Efficiency: Consolidates protection functions into a single component, freeing up PCB space for more compact designs.
- Broad Compatibility: Works seamlessly with all SiC MOSFETs from Littelfuse and other leading manufacturers, offering a flexible solution across various applications.
Applications of the SMFA Asymmetrical Series
The SMFA Asymmetrical Series TVS Diode is ideal for demanding applications involving SiC MOSFETs, including:
- AI and Data Center Power Supplies: Enhances the reliability of power supplies in high-performance computing environments.
- Electric Vehicle Infrastructure (EVI): Provides durable gate protection for EV chargers and power systems, supporting efficient and long-lasting performance.
- Industrial and Semiconductor Equipment: Safeguards essential power supplies in semiconductor manufacturing and other industrial settings, where uptime and reliability are critical.
Availability and Ordering Information
The SMFA Asymmetrical Series TVS Diode is now available in tape-and-reel packaging, with quantities of 3,000 per reel. Sample requests can be placed through Littelfuse’s network of authorized distributors worldwide. For a complete list of distributors, visit Littelfuse.com.
Learn More
For additional information about the SMFA Asymmetrical Series TVS Diodes, visit the product page on Littelfuse.com. For technical inquiries, contact Ben Huang, Director of Product Management, Protection Business, at Bhuang@littelfuse.com.
With this new TVS diode series, Littelfuse continues to push the boundaries of innovation in circuit protection, helping engineers design more reliable, space-efficient, and high-performing systems for the next generation of power electronics.
