Monday, April 15, 2024

New Littelfuse High Surge Rating SMD TVS Diodes 50% Smaller Than Other Surface-Mounted Solutions

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 Littelfuse, Inc. announced the new SMTOAK2 TVS Diode Series. Many of today’s high-power, high surge rating TVS diodes are only available in axial leaded packages. The compact, 2 kA 8/20 μs rated, surface-mount package SMTOAK2 TVS Diode Series allows electronics designers to achieve a more robust transient voltage, overvoltage protection, and lightning protection system while using less printed circuit board (PCB) space.

SMTOAK2 Surface-Mount TVS Diodes

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The SMTOAK2 TVS Diode Series is ideal for high power density applications that require robust protection in a small footprint, including:

  • ICT, Medical, Industrial DC power supplies
  • High power DC bus protection
  • DC power supplies used in exposed and harsh environments
  • Power over Ethernet (PoE) ports
  • Small Cell, Micro Cell, Remote Radio Units (RRU), Baseband Units (BBU)
  • High power density SiC and GAN-based DC/DC converters/power supplies 

Global trends and regulatory requirements for higher efficiency power supplies, high current and high-speed MOSFET/IGBT designs are increasingly in demand,” said Ben Huang, Senior Product Marketing Manager, at Littelfuse. “ These fast-switching designs need protection against inductive kickback. By using the high-power SMTOAK2 TVS Diode Series, designers can achieve high reliability and robustness while reducing the required board space and assembly time.”

The SMTOAK2 TVS Diode Series offers these key benefits:

  • Protects high-cost, high current, high-speed MOSFET/IGBT circuits against inductive kicks with low clamping voltage and high surge rating. 
  • Enables designers to achieve robust circuit protection with less PCB space via a modified, compact SMTO-263 surface mount package 50% smaller than SMTO-218 surface-mounted solutions. 
  • Compatible with automated PCB assembly processes reducing costs while saving time.



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