SMD TVS Diode Increases Surge Handling Capability by 66%

Littelfuse, Inc. introduces the new 5.0SMDJxxS-HRA TVS diode series. These high reliability TVS diodes are carefully designed, manufactured, and screened to provide robust overvoltage protection with very low early failure rates and zero decay during continuous surge events.

Today's aircraft use more new composite materials, requiring a higher level of lightning strike protection for all electrical and electronic equipment. The 5.0SMDJxxS-HRA is a family of high reliability TVS diodes developed for aircraft subsystems, protecting sensitive electronic equipment from voltage transients caused by lightning and other transient voltage events. When manufacturing high-reliability TVS diodes, Littelfuse employs a rigorous screening process for upgrading electronic components to ensure enhanced robustness. They come in a 5000W surface-mount DO-214AB package with power densities up to 5 kW.

"The 5.0SMDJxxS-HRA TVS diode series offers higher power ratings (up to 5KW) and the same compact surface-mount package as previous solutions," said Charlie Cai, senior product marketing manager at Littelfuse. High electronic protection performance and greater design flexibility. These upgraded TVS diodes can help avionics designers meet stringent high-level regulatory requirements without increasing the size of the printed circuit board."

The 5.0SMDJxxS-HRA TVS diode series is suitable for applications requiring high reliability in harsh environments, including:

• Aerospace, avionics and aircraft subsystems (e.g. cockpit displays, flight controls, radar, etc.)
• Aircraft Powertrain
• AC or DC power line protection
• low frequency data line
• automated industry
• Harsh Environment Applications

5.0SMDJxxS-HRA TVS diode series has the following main advantages:

• Provides a higher power rating than other high-reliability TVS diode series, resulting in a 66% increase in surge handling capability
• Leverage high-reliability designs and upgrade screening processes for avionics and other demanding applications
•   Housed in a very small JEDEC DO-214AB (SMC) package, coupled with high power density (5 KW), offers PC board designers a space-saving alternative to existing solutions
• Comply with DO-160 Lightning Strike Protection Regulation Requirements
• Provides extremely low clamping voltage and unlimited surge lifetime

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