SMD Series - PolySwitch 2920, 3425, & 2018 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 SMD 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
SMD030F-20.30.660101.71.24.8385Product SpecificationSMD030F-2CheckOrder
SMD030F-2018-20.30.860201. SpecificationSMD030F-2018-2CheckOrder
SMD050F-20.5160101.70.351.4485Product SpecificationSMD050F-2CheckOrder
SMD075F-20.751.530401.70.3510.385Product SpecificationSMD075F-2CheckOrder
SMD075F/60-20.751.560101.70.3510.385Product SpecificationSMD075F/60-2CheckOrder
SMD100F-21.12.230401.70.120.480.585Product SpecificationSMD100F-2CheckOrder
SMD100F-2018-21.12.215401. SpecificationSMD100F-2018-2CheckOrder
SMD100F/33-21.12.233401.70.120.410.585Product SpecificationSMD100F/33-2Check
SMD125F-21.252.515401.70.070.25285Product SpecificationSMD125F-2CheckOrder
SMD150F-21.5315401.90.060.25585Product SpecificationSMD150F-2CheckOrder
SMD150F-2018-21.5315401.80.070.18185Product SpecificationSMD150F-2018-2CheckOrder
SMD150F/33-21.5333401.90.080.23585Product SpecificationSMD150F/33-2CheckOrder
SMD150F/33-2920-21.5333401.50.080.23585Product SpecificationSMD150F/33-2920-2CheckOrder
SMD185F-21.853.633401.50.0650.165585Product SpecificationSMD185F-2CheckOrder
SMD200F-22415401.90.050.1251285Product SpecificationSMD200F-2CheckOrder
SMD200F-2018-224.26401.50.0480.1385Product SpecificationSMD200F-2018-2CheckOrder
SMD200F/24-2920-22424401.50.050.125585Product SpecificationSMD200F/24-2920-2CheckOrder
SMD250F/15-2920-22.5515401.50.0350.0851085Product SpecificationSMD250F/15-2920-2CheckOrder
SMD250F-22.5515401.90.0350.0852585Product SpecificationSMD250F-2CheckOrder
SMD260F-22.65.26401.70.0250.0752085Product SpecificationSMD260F-2Check
SMD300F/15-23615401.50.0150.053585Product SpecificationSMD300F/15-2CheckOrder
SMD300F-2366401.50.0150.0483585Product SpecificationSMD300F-2CheckOrder
SMDH120-21.22.3165020.150.342125Product SpecificationSMDH120-2CheckOrder
SMDH160-21.63.216702.20.050.1515125Product SpecificationSMDH160-2CheckOrder
Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s)
RF0314-000 SMD030F-2 RoHS No 08/31/2008 PbFree No 08/31/2008 CoC_RoHS10_RF0314-000_-SMD030F-2-_02-17-2021 REACH211_Declaration_RF0314-000_-SMD030F-2-_02-17-2021 Yes
Does not Contain
RF0323-000 SMD030F-2018-2 RoHS No 05/26/2017 PbFree No 05/26/2017 CoC_RoHS10_RF0323-000_-SMD030F-2018-2-_04-24-2019 REACH211_Declaration_RF0323-000_-SMD030F-2018-2-_03-23-2021 Yes
Does not Contain
RF0315-000 SMD050F-2 RoHS No 12/28/2016 PbFree No 12/28/2016 CoC_RoHS10_RF0315-000_-SMD050F-2-_01-25-2021 REACH205_Declaration_RF0315-000_-SMD050F-2-_02-12-2020 Yes
Does not Contain
RF0316-000 SMD075F-2 RoHS No 01/13/2017 PbFree No 01/13/2017 CoC_RoHS10_RF0316-000_-SMD075F-2-_07-12-2019 REACH205_Declaration_RF0316-000_-SMD075F-2-_02-18-2020 Yes
Does not Contain
RF0317-000 SMD075F/60-2 RoHS No 05/03/2017 PbFree No 05/03/2017 Yes
RF0318-000 SMD100F-2 RoHS No 04/26/2017 PbFree No 04/26/2017 CoC_RoHS10_RF0318-000_-SMD100F-2-_7-1-2019 REACH211_Declaration_RF0318-000_-SMD100F-2-_02-18-2021 Yes
Does not Contain
RF0324-000 SMD100F-2018-2 RoHS No 11/22/2017 PbFree No 11/22/2017 CoC_RoHS10_RF0324-000_-SMD100F-2018-2-_12-02-2020 REACH209_Declaration_RF0324-000_-SMD100F-2018-2-_12-02-2020 Yes
Does not Contain
RF0320-000 SMD125F-2 RoHS No 09/15/2017 PbFree No 09/15/2017 REACH211_Declaration_RF0320-000_-SMD125F-2-_02-22-2021 Yes
Does not Contain
RF0308-000 SMD150F-2 RoHS No 08/31/2008 PbFree No 08/31/2008 CoC_RoHS10_RF0308-000_-SMD150F-2-_07-25-2019 REACH209_Declaration_RF0308-000_-SMD150F-2-_01-05-2021 Yes
Does not Contain
RF0325-000 SMD150F-2018-2 RoHS No 05/30/2017 PbFree No 05/30/2017 CoC_RoHS10_RF0325-000_-SMD150F-2018-2-_03-29-2019 REACH211_Declaration_RF0325-000_-SMD150F-2018-2-_03-31-2021 Yes
Does not Contain
RF0311-000 SMD150F/33-2 RoHS No 12/10/2016 PbFree No 12/10/2016 Yes
RF2285-000 SMD150F/33-2920-2 RoHS No 05/03/2018 PbFree No 05/03/2018 Yes
RF1238-000 SMD185F-2 RoHS No 01/11/2017 PbFree No 01/11/2017 CoC_RoHS10_RF1238-000_-SMD185F-2-_03-05-2021 REACH211_Declaration_RF1238-000_-SMD185F-2-_2-9-2021 Yes
Does not Contain
RF0312-000 SMD200F-2 RoHS No 01/12/2017 PbFree No 01/12/2017 CoC_RoHS10_RF0312-000_-SMD200F-2-_04-05-2019 REACH209_Declaration_RF0312-000_-SMD200F-2-_10-29-2020
Does not Contain
RF0326-000 SMD200F-2018-2 RoHS No 02/20/2019 PbFree No 02/20/2019 CoC_RoHS10_RF0326-000_-SMD200F-2018-2-_04-25-2019 REACH201_Declaration_RF0326-000_-SMD200F-2018-2-_09-26-2019 Yes
Does not Contain
RF2286-000 SMD200F/24-2920-2 RoHS No 06/26/2017 PbFree No 06/26/2017 Yes
RF2287-000 SMD250F/15-2920-2 RoHS No 06/26/2017 PbFree No 06/26/2017 Yes
RF0313-000 SMD250F-2 RoHS No 06/04/2017 PbFree No 06/04/2017 CoC_RoHS10_RF0313-000_-SMD250F-2-_05-07-2019 REACH209_Declaration_RF0313-000_-SMD250F-2-_01-21-2021 Yes
Does not Contain
RF1835-000 SMD300F/15-2 RoHS No 11/09/2016 PbFree No 11/09/2016 Yes
RF0322-000 SMD300F-2 RoHS No 12/05/2017 PbFree No 12/05/2017 CoC_RoHS10_RF0322-000_-SMD300F-2-_09-21-2020 Yes
RF1478-000 SMDH120-2 RoHS No 11/11/2016 PbFree No 11/11/2016 CoC_RoHS10_RF1478-000_-SMDH120-2-_07-19-2019 REACH201_Declaration_RF1478-000_-SMDH120-2-_07-19-2019 Yes
Does not Contain
RF1479-000 SMDH160-2 RoHS No 08/31/2008 PbFree No 08/31/2008 CoC_RoHS10_RF1479-000_-SMDH160-2-_11-23-2020 Yes
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