Littelfuse, a global leader in circuit protection solutions, has introduced the latest additions to its TVS Diodes portfolio: the SD and SD-C Series 450W decentralized unidirectional and bidirectional TVS diodes. These advanced devices are engineered to safeguard electronic systems from damaging electrostatic discharge (ESD) and surge currents caused by lightning strikes. Their fast response time makes them an excellent alternative to multilayer varistors (MLVs), especially in low-speed and DC applications.
The SD and SD-C series are capable of withstanding repeated ESD shocks up to ±30kV without degrading performance, while also handling surge currents of up to 30A safely. With their low dynamic resistance, these TVS diodes offer a 50% lower clamping voltage compared to other technologies on the market, making them ideal for protecting a wide range of components such as buttons, switches, power ports, automotive electronics, test equipment, point-of-sale terminals, ultrabooks, servers, and medical devices—especially in low-speed I/O applications.
Chad Marak, Director of Littelfuse’s Transient Suppression Diode Family, stated, “The SD and SD-C families provide an optimal solution for designers looking to add ESD and surge protection in areas where it's not typically available on PCBs. The SOD-323 package offers greater flexibility, allowing engineers to replace existing 0805 components without redesigning the board or changing the footprint.â€
Key advantages of the SD and SD-C series include:
- Enhanced reliability and ESD protection, ensuring safe operation even in the harshest environments.
- Low dynamic resistance for rapid response and minimal clamping voltage, offering 50% better performance than competing solutions.
- Robust monolithic design eliminates internal losses, resulting in longer device life compared to traditional protection methods.
- Designed to handle multiple ESD or surge events without performance degradation.
- Compatible with industry-standard SOD-323 packaging, which fits the existing 0805 board layout.
- AEC-Q101 compliant, making them suitable for demanding automotive applications with high reliability requirements.
The SD and SD-C series are available in 3000-piece tape and reel configurations. Samples can be obtained through authorized Littelfuse distributors worldwide. Whether you're working on consumer electronics, industrial systems, or automotive designs, these new TVS diodes offer a powerful and flexible protection solution that meets the needs of modern electronics.
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