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    Littelfuse Adds 600W Automotive TVS Diodes for High-Energy Transient Protection

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    Littelfuse Adds 600W Automotive TVS Diodes for High-Energy Transient Protection

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    Bourns Releases Automotive High Creepage and Clearance Transformer

    Bourns Unveils Metal Powder Core High Current Low DCR Shielded Power Inductor

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Littelfuse Adds 600W Automotive TVS Diodes for High-Energy Transient Protection

2.9.2025
Reading Time: 3 mins read
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Littelfuse launches SZSMF6L series TVS diode circuit protection devices for enhanced over-voltage protection in space-constrained EV and automotive electronics.

Littelfuse, Inc., a leader in industrial technology manufacturing, is proud to announce the release of the SZSMF6L Series of unidirectional and bidirectional TVS diodes.

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These 600 W automotive-grade devices offer robust protection against high-energy transients in a compact, surface-mount SOD-123FL package, perfectly suited for the increasingly space-constrained designs of automotive and electric vehicle (EV) systems.

Building on the success of the 400 W SZSMF4L Series launched in 2023, the SZSMF6L Series delivers 50% more peak power handling while maintaining the same compact footprint.

This advancement in surge protection and clamping performance is crucial for safeguarding critical automotive systems from voltage spikes caused by switching events, load dumps, or electrostatic discharge (ESD).

“The SZSMF6L Series addresses the evolving demands of EV and automotive system designers who need greater transient protection without compromising board space,” said Charlie Cai, Director Product Marketing SBU at Littelfuse. “With the transition to zonal architectures and the continued push for miniaturization, this 600 W solution offers engineers a more robust and thermally reliable alternative to the SZSMF4L for high-stress environments.”

Key Features and Benefits:

  • 600 W peak pulse power (10/1000 µs) in a small SOD-123FL package
  • Working peak reverse voltage range: Unidirectional 5–75 V; Bidirectional 10–75 V
  • Fast response time < 1 ns minimizes the threat window for transient events
  • Planar chip design ensures low leakage current and consistent clamping performance
  • High operating temperature up to 175 °C for harsh automotive environments
  • AEC-Q101 qualified and PPAP capable, supporting automotive-grade change control
  • >16 kV ESD rating (HBM Class 3) for sensitive interface and sensor protection

Applications:

The SZSMF6L Series is ideal for high-reliability transient protection in:

  • EV Powertrain and Inverters
  • Battery Management Systems (BMS)
  • On Board Charging (OBC)
  • Power Distribution Units (PDU)
  • Body Control Modules
  • Domain and Zone Controllers
  • Automotive Lighting Systems

The SZSMF6L TVS diodes enable more efficient, compact, and rugged designs that meet the growing electrical demands of next-generation vehicles. Their performance and footprint compatibility allow seamless upgrade paths from the SZSMF4L when additional power handling is required.

Related

Source: Littelfuse

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