The 5.0SMDJ-FB TVS Diode Series, a 5000 W surface-mount solution in a DO-214AB package designed to protect sensitive DC power lines from overvoltage transients, was introduced by Littelfuse.
With foldback technology, the new series maintains Breakdown Voltage (VBR) above the Reverse Standoff Voltage (VR) while delivering a 15% reduction in clamping voltage (VC) when compared to conventional solutions.
Without sacrificing system integrity, this crucial difference guarantees dependable protection for downstream components that are becoming more and more sensitive, particularly next-generation DC/DC converters.
Key Features And Benefits of the 5.0SMDJ-FB TVS Diode 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.
- 5000 W 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 center 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 TVS Diode Series gives design engineers a solution that combines compact footprint, ease of integration, and advanced protection performance to meet those demands.
Leadership Comments
“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 centers and industrial systems.”
Availability
The 5.0SMDJ-FB TVS Diodes are available in tape and reel format in quantities of 3,000. Sample requests are accepted through authorized Littelfuse distributors worldwide.
For a listing of Littelfuse distributors, please visit Littelfuse.com.
