New transient voltage suppression diodes rated at 3 kA provide compact protection for DC buses, PoE systems, data centre supplies and industrial equipment.
Littelfuse Inc, launches the DFNAK3 Series of High-Power TVS Diodes, essential for transient voltage suppression in electronic circuits. This suppresses 3 kA surge current in compact design format. This targets electronic systems that require protection against voltage spikes in DC-powered and Power over Ethernet (PoE) applications.
TVS diodes safeguard electronics from transients caused by lightning strikes, power switching, or electrostatic discharge.
This TVS diode series uses a compact DFN package (Dual Flat No-lead), offering 70% smaller footprint and is also 70% lower in height than standard SMD-type coated packages. This enables space-constrained, high-density PCB designs without compromising surge performance or system robustness.
The series is designed to meet IEC 61000-4-5 Level 4 requirements, the standard levels for telecom, industrial and power equipment. It offers lower clamping voltage reducing the electrical stress applied to downstream circuits, improving system reliability.
Key Features and Benefits
- 3 kA (8/20 µs) surge current rating for high-reliability DC and PoE systems
- Compact DFN surface mount packages save up to 70% PCB space
- Lower clamping voltage for superior protection of sensitive downstream electronics
- Breakdown voltage above reverse standoff voltage ensures reliable DC line and PoE protection
- Aids compliance with IEC 61000-4-5 (Level 4) and other surge protection standards
Target Applications
- DC bus protection for Small Cells, Remote Radio Units (RRUs), and Baseband Units (BBUs)
- Power over Ethernet (PoE) systems
- DC power supplies in AI infrastructure and data center servers
- Industrial DC power supplies operating in harsh environments
