AHEF Series - 32V PolySwitch Automotive High-Temperature Lead-Free Radial Leaded Resettable PPTC

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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.

Helping to reduce weight of wire harnesses, PPTC devices distributed in a circuit can allow the use of smaller wire sizes with the resulting harnesses. Forego looping back and forth around a fuse box and place your protection wherever you see fit. The solid state composition of PPTC devices helps provide reliability.


  • ROHS compliant
  • Products meet applicable automotive industry standards
  • Compatible with high-volume electronics assembly

High Performance

  • Expertise from the world’s leading resettable overcurrent protection manufacturer
  • Wide range of dedicated automotive surface-mount and radial-leaded resettable overcurrent devices
  • High performance transient voltage protection devices

Automotive and Industrial Transportation

  • Actuators and medium motors
  • Trace protection
  • Harness/junction box protection
  • Powered outputs
  • Electronic control modules
  • Telematics/Infotainment

Access specifications, certifications, check availability and order parts below

Catalog #IHold (A)ITRIP
RaMAX (Ω)Max
Trip Time
Pd Typical (watts)Max Operating Temp (°C)Product
Partner ECAD ModelsStockSamplesCompare
AHEF0500.511000.351.11.130.9125Product SpecificationAHEF050CheckOrder
AHEF0700.71.41000. SpecificationAHEF070CheckOrder
AHEF10011.91000.150.430.436.21.4125Product SpecificationAHEF100CheckOrder
AHEF100010201000.0060.0160.016157125Product SpecificationAHEF1000CheckOrder
AHEF300361000.0350.110.1153.2125Product SpecificationAHEF300CheckOrder
AHEF5005101000.0150.040.0495.3125Product SpecificationAHEF500CheckOrder
AHEF7507.5151000.00740.0230.023136.5125Product SpecificationAHEF750CheckOrder
Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s)
RF3055-000 AHEF050 RoHS No 08/13/2018 PbFree No 08/13/2018 REACH191_Declaration_RF3055-000_-AHEF050-_10-05-2018 Yes
Does not Contain
RF3355-000 AHEF070 RoHS No 10/04/2018 PbFree No 10/04/2018 CoC_RoHS10_RF3355-000_-AHEF070-_10-05-2018 REACH197_Declaration_RF3355-000_-AHEF070-_01-30-2019 Yes
Does not Contain
RF3356-000 AHEF100 RoHS No 10/23/2017 PbFree No 10/23/2017 CoC_RoHS10_RF3356-000_-AHEF100-_06-29-2019 Yes
RF3360-000 AHEF1000 RoHS No 09/14/2017 PbFree No 09/14/2017 CoC_RoHS10_RF3360-000_-AHEF1000-_04-29-2019 REACH211_Declaration_RF3360-000_(AHEF1000)_06-07-2021 Yes
Does not Contain
RF3357-000 AHEF300 RoHS No 09/14/2017 PbFree No 09/14/2017 CoC_RoHS10_RF3357-000_-AHEF300-_05-17-2019 Yes
RF3358-000 AHEF500 RoHS No 05/18/2018 PbFree No 05/18/2018 CoC_RoHS10_RF3358-000_-AHEF500-_07-26-2019 REACH209_Declaration_RF3358-000_-AHEF500-_11-18-2020 Yes
Does not Contain
RF3359-000 AHEF750 RoHS No 11/23/2017 PbFree No 11/23/2017 CoC_RoHS10_RF3359-000_-AHEF750-_11-23-2017 Yes
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