SMDC Series - PolySwitch 2920 Size Lead-Free Surface Mount 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.

The SMDC series provides surface mount overcurrent protection for applications where space is at a premium and resettable protection is desired.


  • Broadest range of resettable devices available in industry
  • Low resistance


  • Compact Design and New HV Ratings
  • Smaller size helps reduce board space and cost
  • Many product choices optimizes design flexibility
  • Compatible with high-volume electronics assembly
  • Higher voltage ratings allow use in new applications


  • Mobile Electronics and Batteries
  • Computer
  • Portable electronics
  • Multimedia
  • Game machines
  • Telephone and broadband
  • Automotive
  • Industrial controls
  • Battery

Access specifications, certifications, check availability and order parts below

Catalog #IHold (A)ITRIP
Max Volts
Trip Time
Max Operating Temp (°C)Product
Partner ECAD ModelsStockSamplesCompare
SMDC030F-20.30.660101.50.33.4385Product SpecificationSMDC030F-2CheckOrder
SMDC050F-20.5160101.50.151.2485Product SpecificationSMDC050F-2CheckOrder
SMDC075F-20.751.533401.50.10.610.385Product SpecificationSMDC075F-2CheckOrder
SMDC125F/33-21.252.533401.50.040.25285Product SpecificationSMDC125F/33-2CheckOrder
SMDC185F/33-21.853.733401. SpecificationSMDC185F/33-2CheckOrder
SMDC300F/24-23624401.70.0150.072585Product SpecificationSMDC300F/24-2CheckOrder
SMDC310F/18-023.1618501.50.0130.0362585Product SpecificationSMDC310F/18-02CheckOrder
SMDCH125F/24-021.252.5242020.080.240.5125Product SpecificationSMDCH125F/24-02CheckOrder
Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s) IPC-Material Declaration
RF4438-000 SMDC030F-2 RoHS No 07/21/2019 PbFree No 07/21/2019 CoC_RoHS10_RF4438-000_(SMDC030F-2) REACH219_Declaration_RF4438-000_(SMDC030F-2) Yes
Does not Contain
RF4439-000 SMDC050F-2 RoHS No 07/21/2019 PbFree No 07/21/2019 CoC_RoHS10_RF4439-000_(SMDC050F-2) Yes
RF4441-000 SMDC075F-2 RoHS No 07/21/2019 PbFree No 07/21/2019 CoC_RoHS10_RF4441-000_(SMDC075F-2) Yes
RF4298-000 SMDC125F/33-2 RoHS No 07/17/2018 PbFree No 07/17/2018 CoC_RoHS10_RF4298-000_SMDC125F-33-2 REACH209_Declaration_RF4298-000_SMDC125F-33-2 Yes
Does not Contain
RF3182-000 SMDC185F/33-2 RoHS No 01/15/2017 PbFree No 01/15/2017 CoC_RoHS10_RF3182-000_SMDC185F-33-2 REACH_SVHC Declaration_RF3182-000 (SMDC185F-33-2) Yes
Does not Contain
RF3102-000 SMDC300F/24-2 RoHS No 04/26/2017 PbFree No 04/26/2017 CoC_RoHS10_RF3102-000_SMDC300F-24-2 REACH_SVHC Declaration_RF3102-000 (SMDC300F-24-2) Yes
Does not Contain
RF3763-000 SMDC310F/18-02 RoHS No 07/21/2019 PbFree No 07/21/2019 CoC_RoHS10_RF3763-000_SMDC310F-18-02 REACH211_Declaration_RF3763-000_SMDC310F-18-02 Yes
Does not Contain
RF4432-000 SMDCH125F/24-02 RoHS No 07/21/2019 PbFree No 07/21/2019 Yes
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