Wednesday, February 8, 2023

High Surge Rating TVS Diodes Provides Protection Against Lightning Strike And Transient Surges

By Sharad Bhowmick

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The SMTOAK2 TVS diode series from Littelfuse is a high surge rating SMD TVS that is 50% smaller than other SMD solutions. It is suitable for critical applications that require robust protection in a small footprint.

It Delivers superior protection against lightning strikes, inductive kicks, and other transient surges.

SMTOAK2 TVS Diode (Source: LittleFuse)

Little fuse has announced the new SMTOAK2 TVS Diode Series. The new diode series is suitable for use in critical applications such as data centre, telecom, power supply, etc. where protection against inductive kicks and lightning strikes are crucial. The SMTOAK2 TVS Diode Series is ideal for high-power-density applications that require robust protection in a small footprint. The TVS diode series enables designers to achieve robust circuit protection with less PCB space via a modified, compact SMTO-263 surface-mount package that is 50% smaller than SMTO-218 surface-mounted solutions. The SMTOAK2 can be used in a variety of applications including ICT, Medical, Industrial DC power supplies, etc.

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Lightning strikes, transient surges and inductive kicks can cause serious damage to electronic equipment. To protect this equipment from these conditions a high surge-rated TVS diode is employed in the design. The company claims that 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.

“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 is compatible with the automated PCB assembly process reducing costs while saving time. The diode can protect high-cost, high current, high-speed MOSFET/IGBT circuits against inductive kicks with low clamping voltage and high surge rating. The TVS diode series enables designers to achieve robust circuit protection with less PCB space via a modified, compact SMTO-263 surface-mount package that is 50% smaller than SMTO-218 surface-mounted solutions.

The SMTOAK2 TVS Diode Series is suitable for applications that require robust protection in a small footprint, such as ICT, medical, industrial DC power supplies, high-power DC bus protection, high power density SiC and GAN-based DC/DC converters/power supplies, etc.


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