The new series incorporates foldback technology, which delivers up to 15% lower clamping voltage (VC) compared to traditional solutions, while maintaining Breakdown Voltage (VBR) above the Reverse Standoff Voltage (VR). This key differentiator ensures reliable protection for increasingly sensitive downstream components – especially next-generation DC/DC converters – without compromising system integrity.
“The 5.0SMDJ-FB Series addresses a critical design challenge: how to safeguard increasingly sensitive DC/DC converters and other power supply components from destructive transient surges,” said Jenny Chen, Product Manager, Protection Semiconductor Business Unit at Littelfuse. “By achieving up to 15% lower clamping voltage for the same standoff voltage, our foldback technology enhances circuit protection performance in high-reliability applications like data centres and industrial systems.”
Key features and benefits of the 5.0SMDJ-FB Series include:
- Foldback technology for lower clamping voltage, improving protection against electrical fast transients (EFT), electrostatic discharge (ESD), and other overvoltage conditions
- Breakdown Voltage (VBR) is always greater than Reverse Standoff Voltage (VR) – ideal for maintaining DC power line stability
- 5,000W peak pulse power rating, enabling robust protection in harsh electrical environments
- Drop-in replacement to legacy 5.0SMDJ Series with the same compact DO-214AB (SMC) footprint
These devices protect DC power lines across a variety of demanding applications, including:
- Power over Ethernet (PoE) systems
- AI and data centre servers
- ICT equipment power supplies
- Industrial DC power distribution
As system designs evolve to include higher-performance and more compact DC/DC converters, the risk of transient-induced failures increases. The 5.0SMDJ-FB Series gives design engineers a solution that combines compact footprint, ease of integration, and advanced protection performance to meet those demands.
Availability
The 5.0SMDJ-FB TVS Diodes are available in tape and reel format in quantities of 3,000. Sample requests are accepted through authorised Littelfuse distributors worldwide.
