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Circuits shown here can experience overload, short circuit conditions, or voltage transients (lightning, ESD, etc.) and may require protection components to meet Regulatory standards or to ensure reliable operation. Click on the green links to find Littelfuse circuit protection solutions.

Solutions By Circuit

10/100/1000 Ethernet ESD Protection

  • SP3002

    0.85pF, 12kV, Low Capacitance Diode Array for ESD Protection

Battery Pack

  • 0805L

    PolySwitch® Lead-Free Surface Mount Resettable PPTC

  • 1210L

    PolySwitch® Lead-Free Surface Mount Resettable PPTC

  • 1812L

    PolySwitch® Lead-Free Surface Mount Resettable PPTC

  • 2016L

    PolySwitch® Lead-Free Surface Mount Resettable PPTC

  • 2920L

    PolySwitch® Lead-Free Surface Mount Resettable PPTC

  • LRD

    LRD Series - Strap Type Polymer PTC 15V / 20V

  • LTD

    LTD Series - Strap Type Polymer PTC 15V / 24V

  • STD

    STD Series - Strap Type Polymer PTC 15V / 24V

  • VLD

    VLD Series - Strap Type Polymer PTC 12 V

  • VTD

    VTD Series - Strap Type Polymer PTC 16V

  • Thin Film Chip Fuses

  • SP0503BAHT

    Surface Mount TVS Avalanche Diode Arrays

  • SP0503BAHTG

    30pF, 30kV, Unidirectional TVS Array for ESD Protection

DC input

PS/2 port

  • SP0503BAHT

    Surface Mount TVS Avalanche Diode Arrays

  • SP0503BAHTG

    30pF, 30kV, Unidirectional TVS Array for ESD Protection

RF Antenna

  • PGB1010603

    Lead-Free 0603 Surface Mount Polymeric ESD Suppressors

Serial port

  • SP723ABT

    SCR/Diode Array for ESD and Overvoltage Protection

  • SP723ABTG

    5pF, 8kV, SCR & Diode Rail Clamp Array

Speaker

USB 2.0

  • V5.5MLA0603

    Multilayer Transient Voltage Suppressor

  • PGB1010603

    Lead-Free 0603 Surface Mount Polymeric ESD Suppressors

  • PGB102ST23

    Lead-Free SOT23 Surface Mount Polymeric ESD Suppressors

  • SP3003

    0.65pF, 8kV, Low Capacitance Diode Array for ESD Protection - Qualified to AEC-Q101

  • PGB1010402

    Lead-Free 0402 Surface Mount Polymeric ESD Suppressors

USB 3.0

  • SP3003

    0.65pF, 8kV, Low Capacitance Diode Array for ESD Protection - Qualified to AEC-Q101

  • SP3010

    Ultra-Low Capacitance Diode Array for ESD Protection

  • SP3012

    Low Capacitance ESD Protection, 0.5pF Rail Clamp Array - Qualified to AEC-Q101

  • SP3011

    Littelfuse SP3011 SPA™ TVS Diode Array