ASMDC Series - PolySwitch Automotive 2920 Size Lead-Free Surface Mount Resettable PPTC

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 ASMDC PPTC offers a lower profile form factor for better space saving and provides higher VDC and IHOLD rating, most robust performance compared to the competitors in the market.


  • RoHS compliant
  • Products meet applicable automotive industry standards
  • Lower Profile ˗ Comparing to the existing 2920 Size ASMD Series
  • Resettable solution against overcurrent and short-circuit in automotive circuitry
  • AEC-Q200 qualified, ISO/TS16949 certified
  • Surface-mount Form Factor


  • High Performance expertise from the world’s leading resettable overcurrent protection manufacturer
  • Provides wider range of form factors to enhance design flexibility
  • Restores system operation after reset when fault condition is removed, thus provides safety and protection
  • Able to meet most stringent requirements for the extreme harsh automotive environment
  • Suitable for standard PCB assembly to enable automated mass production


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

Product Video:

Access specifications, certifications, check availability and order parts below

Catalog #IHold (A)ITRIP
Max Volts
RaMAX (Ω)Max
Trip Time
Max Operating Temp (°C)Product
Partner ECAD ModelsStockSamplesCompare
ASMDC030F-20.30.660101. SpecificationASMDC030F-2CheckOrder
ASMDC050F-20.5160101. SpecificationASMDC050F-2CheckOrder
ASMDC075F-20.751.533401.50.10.610.610.385Product SpecificationASMDC075F-2CheckOrder
ASMDC125F/33-21.252.533401. SpecificationASMDC125F/33-2CheckOrder
ASMDC185F/33-21.853.733401. SpecificationASMDC185F/33-2CheckOrder
ASMDC300F/24-23624401.70.0150.0720.072585Product SpecificationASMDC300F/24-2CheckOrder
Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s) IPC-Material Declaration
RF4571-000 ASMDC030F-2 RoHS No 04/11/2018 PbFree No 04/11/2018 Yes
RF4572-000 ASMDC050F-2 RoHS No 04/26/2016 PbFree No 04/26/2016 CoC_RoHS10_RF4572-000_ASMDC050F-2 REACH_SVHC Declaration_RF4572-000 (ASMDC050F-2 Yes
Does not Contain
RF4573-000 ASMDC075F-2 RoHS No 02/28/2018 PbFree No 02/28/2018 CoC_RoHS10_RF4573-000_ASMDC075F-2 REACH_SVHC Declaration_RF4573-000 (ASMDC075F-2) Yes
Does not Contain
RF4574-000 ASMDC125F/33-2 RoHS No 04/26/2016 PbFree No 04/26/2016 CoC_RoHS10_RF4574-000_(ASMDC125F-33-2) REACH_SVHC Declaration_RF4574-000 (ASMDC125F-33-2) Yes
Does not Contain
RF4575-000 ASMDC185F/33-2 RoHS No 03/15/2018 PbFree No 03/15/2018 CoC_RoHS10_RF4575-000_ASMDC185F-33-2 Yes
RF4576-000 ASMDC300F/24-2 RoHS No 10/17/2017 PbFree No 10/17/2017 CoC_RoHS10_RF4576-000_ASMDC300F-24-2 REACH_SVHC Declaration_RF4576-000 (ASMDC300F-24-2) 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.