Friday, December 9, 2022

Provide High-Reliability, 66% Increase in Surge Handling for Aerospace and Avionics Applications

Up-screen components deliver aircraft electrical protection against lightning strikes and other transient surges

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 Littelfuse, Inc. announced the new 5.0SMDJxxS-HRA TVS Diode Series. The high-reliability TVS diodes are designed, manufactured, and screened to provide robust overvoltage protection, with low early failures and zero degradation over continuous surge events.

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Littelfuse’s new 5.0SMDJxxS-HRA TVS Diode Series

Today’s aircraft use more and new composite materials, thus requiring higher-level lightning protection for all electrical and electronic equipment. The 5.0SMDJxxS-HRA is a highly reliable TVS diode series developed for aircraft subsystems. They protect sensitive electronic equipment from voltage transients induced by lightning and other transient voltage events. Littelfuse manufactures these high-reliability TVS diodes using a stringent process for up-screening electronic components that ensures enhanced robustness. They are available in a 5000W surface-mount DO-214AB package with a high-power density of up to 5 kW.

The 5.0SMDJxxS-HRA TVS Diode Series is ideal for applications that require high reliability under harsh environments, including:

  • Aerospace, avionics, and aircraft subsystems (e.g., cockpit displays, fight control, radar, etc.),
  • Aircraft power trains,
  • AC or DC power line protection, 
  • Low-frequency data lines,
  • Industrial automation, and 
  • Harsh environment applications.
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“The 5.0SMDJxxS-HRA TVS Diode Series enhanced power rating (up to 5 KW) while in the same compact surface-mount package (as prior solutions) provide increased electronics protection performance and greater design flexibility,” said Charlie Cai, a Senior Product Marketing Manager at Littelfuse. “These up-screened TVS diodes help aerospace electronics designers meet demanding high-grade regulatory requirements without needing to increase the size of their printed circuit boards.”

The 5.0SMDJxxS-HRA TVS Diode Series offers these key benefits:

  • Delivers a higher power rating than other high-reliability TVS diode series, resulting in a 66% increase in surge handling capability.
  • Utilizes high-reliability design and up-screening process for avionics and other demanding applications.
  • The very small JEDEC DO-214AB (SMC) package, coupled with a high-power density (5 KW), provides PC board designers with a space-saving alternative to currently available options.
  • Meets DO-160 lightning protection regulatory requirements. 
  • Provides a very low clamping voltage and unlimited surge life.

 

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