RKEF Series - 60V PolySwitch Lead-Free Radial Leaded Resettable PPTC

RKEF
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Disclaimer Notice

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.

Our radial-leaded products represent the most comprehensive and complete set of PPTC products available in the industry today. RGEF series for hold currents up to 14A. RHEF series for flatter thermal derating and operating temperatures up to 125°C. RUEF series for balance of voltage rating (30V) and hold current (up to 9A). RUSBF series for fast time-to-trip and low-resistance computer applications. RXEF series for low hold currents (down to 50mA) and high voltage rating (up to 72V). RKEF series for balance of voltage rating (60V) and hold current (up to 5A). LVR series for line voltage rated applications now offering RoHS versions of all products.

Features:

  • Resettable and single-use overcurrent devices
  • Wide range of form factor and termination methods
  • Devices compatible with high-volume electronics assembly

Applications:
Consumer and Industrial

  • Satellite video receivers
  • Industrial controls
  • Transformers
  • Computer motherboards
  • Modems
  • USB hubs, ports and peripherals
  • IEEE 1394 ports
  • CD-ROMs
  • Game machines
  • Battery packs
  • Phones
  • Fax machines
  • Analog and digital line cards
  • Printers

Access specifications, certifications, check availability and order parts below

Catalog #IHold (A)ITRIP
(A)
IMAX
(A)
RMIN
(Ω)
Rmax
(Ω)
R1max
(Ω)
Max
Time
to
Trip Time
(Sec)
Pd Typical (watts)Max Operating Temp (°C)Product
Specification
Partner ECAD ModelsStockSamplesCompare
RKEF0500.51400.320.5290.90.8185Product SpecificationRKEF050CheckOrder
RKEF050-AP0.51400.320.5290.90.8185Product SpecificationRKEF050-APCheckOrder
RKEF0650.651.3400.250.450.7211.2585Product SpecificationRKEF065CheckOrder
RKEF065-AP0.651.3400.250.450.7211.2585Product SpecificationRKEF065-APCheckOrder
RKEF0750.751.5400.20.390.641.51.485Product SpecificationRKEF075CheckOrder
RKEF075-20.751.5400.20.390.641.51.485Product SpecificationRKEF075-2CheckOrder
RKEF0900.91.8400.190.320.5221.585Product SpecificationRKEF090CheckOrder
RKEF1101.12.2400.170.280.4732.285Product SpecificationRKEF110CheckOrder
RKEF1351.352.7400.110.220.374.52.385Product SpecificationRKEF135CheckOrder
RKEF1601.63.2400.10.20.3292.485Product SpecificationRKEF160CheckOrder
RKEF1851.853.7400.060.1520.2512.62.685Product SpecificationRKEF185CheckOrder
RKEF2502.55400.040.0850.1415.62.885Product SpecificationRKEF250CheckOrder
RKEF250K2.55400.040.0850.1415.62.885Product SpecificationRKEF250KCheckOrder
RKEF250K-22.55400.040.0850.1415.62.885Product SpecificationRKEF250K-2Check
RKEF30036400.030.050.0819.83.285Product SpecificationRKEF300CheckOrder
RKEF300-236400.030.050.0819.83.285Product SpecificationRKEF300-2CheckOrder
RKEF3753.757.5400.0170.040.06223.485Product SpecificationRKEF375CheckOrder
RKEF375K3.757.5400.0170.040.06223.485Product SpecificationRKEF375KCheckOrder
RKEF40048400.0140.0380.06243.785Product SpecificationRKEF400CheckOrder
RKEF500510400.0120.030.0528585Product SpecificationRKEF500CheckOrder
RKEF500-1510400.0120.030.0528585Product SpecificationRKEF500-1CheckOrder
RKEF500-2510400.0120.030.0528585Product SpecificationRKEF500-2CheckOrder
RKEF500K-2510400.0120.030.0528585Product SpecificationRKEF500K-2CheckOrder
Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s)
RF3054-000 RKEF050 RoHS No 12/10/2017 PbFree No 12/10/2017 CoC_RoHS10_RF3054-000_-RKEF050-_12-13-2017 REACH209_Declaration_RF3054-000_-RKEF050-_10-02-2020 Yes
12/10/2017
Does not Contain
RF3361-000 RKEF050-AP RoHS No 04/26/2016 PbFree No 04/26/2016 CoC_RoHS10_RF3361-000_-RKEF050-AP-_10-19-2020 REACH209_Declaration_RF3361-000_-RKEF050-AP-_10-19-2020 Yes
04/26/2016
Does not Contain
RF3363-000 RKEF065 RoHS No 10/16/2017 PbFree No 10/16/2017 CoC_RoHS10_RF3363-000_08-24-2018 REACH197_Declaration_RF3363-000_-RKEF065-_03-12-2019
10/16/2017
Does not Contain
RF3364-000 RKEF065-AP RoHS No 04/26/2016 PbFree No 04/26/2016 Yes
04/26/2016
RF3365-000 RKEF075 RoHS No 10/16/2017 PbFree No 10/16/2017 REACH201_Declaration_RF3365-000_-RKEF075-_8-27-2019 Yes
10/16/2017
Does not Contain
RF3899-000 RKEF075-2 RoHS No 06/29/2018 PbFree No 06/29/2018 CoC_RoHS10_RF3899-000_-RKEF075-2-_06-29-2018 Yes
06/29/2018
RF3366-000 RKEF090 RoHS No 01/29/2017 PbFree No 01/29/2017 CoC_RoHS10_RF3366-000_-RKEF090-_08-29-2018 REACH191_Declaration_RF3366-000_-RKEF090-_08-28-2018 Yes
01/29/2017
Does not Contain
RF3367-000 RKEF110 RoHS No 04/26/2017 PbFree No 04/26/2017 CoC_RoHS10_RF3367-000_-RKEF110-_09-16-2019 REACH201_Declaration_RF3367-000_-RKEF110-_11-13-2019 Yes
04/26/2017
Does not Contain
RF3369-000 RKEF135 RoHS No 05/30/2017 PbFree No 05/30/2017 CoC_RoHS10_RF3369-000_-RKEF135-_08-02-2019 REACH211_Declaration_RF3369-000_-RKEF135-_2-22-2021 Yes
05/30/2017
Does not Contain
RF3370-000 RKEF160 RoHS No 11/02/2017 PbFree No 11/02/2017 CoC_RoHS10_RF3370-000_-RKEF160-_05-24-2019 REACH219_Declaration_RF3370-000_(RKEF160)_09-06-2021 Yes
11/02/2017
Does not Contain
RF3371-000 RKEF185 RoHS No 02/16/2017 PbFree No 02/16/2017 CoC_RoHS10_RF3371-000_-RKEF185-_04-02-2020 REACH205_Declaration_RF3371-000_-RKEF185-_04-02-2020 Yes
02/16/2017
Does not Contain
RF3372-000 RKEF250 RoHS No 04/26/2017 PbFree No 04/26/2017 CoC_RoHS10_RF3372-000_-RKEF250-_02-18-2021 REACH211_Declaration_RF3372-000_-RKEF250-_02-18-2021 Yes
04/26/2017
Does not Contain
RF3373-000 RKEF250K RoHS No 01/16/2018 PbFree No 01/16/2018 CoC_RoHS10_RF3373-000_08-24-2018 REACH191_Declaration_RF3373-000_08-24-2018 Yes
01/16/2018
Does not Contain
RF3374-000 RKEF300 RoHS No 02/16/2017 PbFree No 02/16/2017 CoC_RoHS10_RF3374-000_-RKEF300-_08-23-2019 REACH209_Declaration_RF3374-000_-RKEF300-_01-06-2021 Yes
02/16/2017
Does not Contain
RF3796-000 RKEF300-2 RoHS No 02/07/2018 PbFree No 02/07/2018 CoC_RoHS10_RF3796-000_-RKEF300-2-_02-08-2018 Yes
02/07/2018
RF3375-000 RKEF375 RoHS No 04/26/2017 PbFree No 04/26/2017 CoC_RoHS10_RF3375-000_-RKEF375-_08-23-2019 REACH197_Declaration_RF3375-000_-RKEF375-_04-29-2019 Yes
04/26/2017
Does not Contain
RF3376-000 RKEF375K RoHS No 12/13/2017 PbFree No 12/13/2017 CoC_RoHS10_RF3376-000_-RKEF375K-_12-13-2017 REACH191_Declaration_RF3376-000_-RKEF375K-_09-14-2018 Yes
12/13/2017
Does not Contain
RF3377-000 RKEF400 RoHS No 10/10/2017 PbFree No 10/10/2017 CoC_RoHS10_RF3377-000_-RKEF400-_08-23-2019 REACH219_Declaration_RF3377-000_(RKEF400)_09-06-2021 Yes
10/10/2017
Does not Contain
RF3058-000 RKEF500 RoHS No 08/02/2017 PbFree No 08/02/2017 CoC_RoHS10_RF3058-000_-RKEF500-_08-20-2019 REACH219_Declaration_RF3058-000_(RKEF500)_09-06-2021 Yes
08/02/2017
Does not Contain
RF3378-000 RKEF500-1 RoHS No 04/02/2018 PbFree No 04/02/2018 CoC_RoHS10_RF3378-000_-RKEF500-1-_12-17-2020 REACH209_Declaration_RF3378-000_-RKEF500-1-_12-17-2020 Yes
04/02/2018
Does not Contain
RF4481-000 RKEF500-2 RoHS No 04/26/2016 PbFree No 04/26/2016 Yes
04/26/2016
RF4451-000 RKEF500K-2 RoHS No 04/26/2016 PbFree No 04/26/2016 Yes
04/26/2016
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