AHRL Series - 16V PolySwitch Automotive Lead-Free Radial Leaded Resettable PPTC

External overview image
Roll Over to Zoom
Disclaimer Notice

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, 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.

The AHRL Series is a PPTC resettable device with compact size designed for the automotive industry. It is a 16V high-temperature, lead-free, radial leaded resettable device that meets Littelfuse's Automotive qualification. This qualification is based on AEC-Q200: Stress Test Qualification for Passive Components.


  • Compact size (Width and Height)
  • Wide range of hold current ratings (3.5 A~15 A) with low thermal derating
  • RoHS compliant, Lead-free, and Halogen-free
  • AEC-Q200 compliant
  • Operating temperature up to 125º C


  • Motor and motor circuit protection including power door locks, mirrors, lumbar umps, seats, sunroofs and windows
  • Electroni Control Unit (ECU) I/O protection
  • Heating, Ventilation and Cooling (HVAC) motor and I/O protection
  • Telematics, infotainment and navigations systems
  • Liquid Crystal Display (LCD) back-light heaters
  • Power and cigarette lighter outlets, plugs and adapter/chargers
  • Powered networks and buses
  • Air-flow detection and overcurrent protection in HVAC and cooling fan systems
  • Stall detection in express window and sunroof circuits
  • Resettable overcurrent protection for power distribution, electrical centers and junction boxes
  • Wire downsizing
  • Motro electromagnetic interference (EMI) suppression
  • Electrostatic dischage (ESD) damage protection
  • Load dump and other transient voltage protection


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
AHRL100010201000.00420.00680.00950101255.4Product SpecificationAHRL1000CheckOrder
AHRL110011221000.00380.00630.00835511.21255.7Product SpecificationAHRL1100CheckOrder
AHRL120012241000.00350.00580.00776012.51256Product SpecificationAHRL1200CheckOrder
AHRL130013261000.00330.00530.00765141256.4Product SpecificationAHRL1300CheckOrder
AHRL140014281000.00310.00480.006470161256.7Product SpecificationAHRL1400CheckOrder
AHRL150015301000.00290.00430.005675181257Product SpecificationAHRL1500CheckOrder
AHRL3503.57500.0180.0320.0517.54.51253Product SpecificationAHRL350CheckOrder
AHRL40048500.0160.0280.0442051253.3Product SpecificationAHRL400CheckOrder
AHRL4504.59500.01450.0260.0422.55.51253.5Product SpecificationAHRL450CheckOrder
AHRL500510500.01350.0240.038255.81253.5Product SpecificationAHRL500CheckOrder
AHRL5505.5111000.0120.0220.03427.561253.3Product SpecificationAHRL550CheckOrder
AHRL6006131000.0090.0140.0252306.51253Product SpecificationAHRL600CheckOrder
AHRL6506.5131000.00950.0150.022532.56.51253.3Product SpecificationAHRL650CheckOrder
AHRL7007141000.00850.0140.019356.81253.7Product SpecificationAHRL700CheckOrder
AHRL7507.5151000.00730.01250.016837.571254Product SpecificationAHRL750CheckOrder
AHRL8008161000.0060.01050.01454081254.3Product SpecificationAHRL800CheckOrder
AHRL9009181000.00460.00750.00984591255Product SpecificationAHRL900CheckOrder
Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s) IPC-Material Declaration
RF4992-000 AHRL500 RoHS No 12/15/2021 PbFree No 12/15/2021 CoC_RoHS10_RF4992-000_(AHRL500) REACH219_Declaration_RF4992-000_(AHRL500) Yes
Does not Contain
If the product environmental information that you are looking for does not appear in this tab,
please complete the Product Environmental Information Request Form.