Selection Guide - Littelfuse

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Circuit Protection ProductsSelection GuideA Guide to selecting the right protection components for your applications 2020 Littelfuse , Circuit Protection Technologies4 5Overcurrent Protection Solutions6Overvoltage Protection Solutions7ESD Suppression Solutions8Applications9 11Common Circuit Threats and Protection Solutions12 13Fuses14 16Fuseholders17Surface Mount PPTC Devices18 19Radial Leaded PPTC Devices19 20Battery PPTC Devices20Battery Mini-Breakers (Thermal Cutoff devices )21Telecom PPTC Devices22Varistors23 24Gas Discharge Tubes24 26PulseGuard ESD Suppressors26TVS Diode Arrays27 29TVS Diodes29 31PLED Bypass Protectors32 33SIDACtor Protection Thyristors33 35About this guideThis Guide provides a summary of key circuit protection consideration factors, descriptions of the technologies Littelfuse offers, and product Selection tables.

devices limit the flow of dangerously high current during fault conditions. The PolySwitch PPTC device, however, resets after the fault is cleared and power to the circuit is removed, thereby helping to reduce warranty, service and repair costs. PolySwitch PPTC devices are typically used in consumer electronics,

  Devices, Littelfuse, Polyswitch