RUEF Series - 30V PolySwitch Lead-Free Radial Leaded Resettable PPTC

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Disclaimer Notice

Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

Our radial-leaded products represent the most comprehensive and complete set of PPTC products available in the industry today. RGEF series for hold currents up to 14A. RHEF series for flatter thermal derating and operating temperatures up to 125°C. RUEF series for balance of voltage rating (30V) and hold current (up to 9A). RUSBF series for fast time-to-trip and low-resistance computer applications. RXEF series for low hold currents (down to 50mA) and high voltage rating (up to 72V). RKEF series for balance of voltage rating (60V) and hold current (up to 5A). LVR series for line voltage rated applications now offering RoHS versions of all products.


  • Resettable and single-use overcurrent devices
  • Wide range of form factor and termination methods
  • Devices compatible with high-volume electronics assembly

Consumer and Industrial

  • Satellite video receivers
  • Industrial controls
  • Transformers
  • Computer motherboards
  • Modems
  • USB hubs, ports and peripherals
  • IEEE 1394 ports
  • CD-ROMs
  • Game machines
  • Battery packs
  • Phones
  • Fax machines
  • Analog and digital line cards
  • Printers

Access specifications, certifications, check availability and order parts below

Catalog #IHold (A)ITRIP
Trip Time
Max Operating Temp (°C)Pd Typical (watts)Product
Partner ECAD ModelsStockSamplesCompare
RUEF0900.91.81000.970. SpecificationRUEF090CheckOrder
RUEF090-20.91.81000.970. SpecificationRUEF090-2CheckOrder
RUEF090-AP0.91.81000.970. SpecificationRUEF090-APCheckOrder
RUEF1101.12.21001. SpecificationRUEF110CheckOrder
RUEF110-21.12.21001. SpecificationRUEF110-2CheckOrder
RUEF110-AP1.12.21001. SpecificationRUEF110-APCheckOrder
RUEF110S1.12.21001. SpecificationRUEF110SCheckOrder
RUEF1351.352.71001. SpecificationRUEF135CheckOrder
RUEF135-21.352.71001. SpecificationRUEF135-2CheckOrder
RUEF135-AP1.352.71001. SpecificationRUEF135-APCheckOrder
RUEF135S1.352.71001. SpecificationRUEF135SCheckOrder
RUEF1601.63.21001.360.030.070.118850.9Product SpecificationRUEF160CheckOrder
RUEF160-21.63.21001.360.030.070.118850.9Product SpecificationRUEF160-2CheckOrder
RUEF160-AP1.63.21001.360.030.070.118850.9Product SpecificationRUEF160-APCheckOrder
RUEF160S1.63.21001.360.030.070.118850.9Product SpecificationRUEF160SCheckOrder