TRF600 Series - 600V PolySwitch Lead-Free Radial Leaded Resettable PPTC for Telecom Protection

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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 PolySwitch families of telecommunications and networking devices help meet the growing demand for resettable overcurrent protection. These product families help provide protection against damage caused by power cross and power induction surges as defined in ITU, Telcordia GR1089 and UL60950. Our offering includes chip, surface-mount and radial-leaded configurations.

Resettable, Quick Time to Trip

  • Resettable overcurrent protection
  • Surface-mount, radial-leaded, and chip form factors
  • Fast time-to-trip
  • Agency recognition: UL, CSA, TÜV
  • Resistance sorted and matched devices available
  • Low parasitic capacitance/flat impedance with frequency


  • Many product choices give engineers increased design flexibility
  • Compatible with high-volume electronics assembly
  • Help improve line balance
  • Applicable for legacy POTS and modern digital communications equipment

Networking Machines and Systems

  • Modems
  • Phone sets
  • Fax machines
  • Phone wall outlets
  • Alarm systems
  • PBX systems
  • MDF modules
  • Analog and digital line cards
  • T1/E1 equipment
  • xDSL modems and splitters
  • Powered Ethernet systems
  • VoIP (Voice over Internet Protocol) equipment
  • LAN, WAN equipment
  • Customer premise equipment
  • Access network hardware

Access specifications, certifications, check availability and order parts below

Catalog #IHold (A)ITRIP
Max Volts
Interrupt Current (A)Interrupt Voltage (Vrms)Max Operating Temp (°C)Pd Typical (watts)Product
Partner ECAD ModelsStockSamplesCompare
TRF600-1500.150.3250610173600851.4Product SpecificationTRF600-150CheckOrder
TRF600-150-20.150.3250610173600851.4Product SpecificationTRF600-150-2CheckOrder
TRF600-150-B- SpecificationTRF600-150-B-0.5CheckOrder
TRF600-150-B-0.5-20.150.3250610173600851.4Product SpecificationTRF600-150-B-0.5-2CheckOrder
TRF600-150-RB0.150.3250912223600851.4Product SpecificationTRF600-150-RBCheckOrder
TRF600-150-RB-20.150.3250912223600851.4Product SpecificationTRF600-150-RB-2CheckOrder
TRF600-150-RB-B- SpecificationTRF600-150-RB-B-0.5CheckOrder
TRF600-150S0.150.3250610173600851.4Product SpecificationTRF600-150SCheckOrder
TRF600-150S-20.150.3250610173600851.4Product SpecificationTRF600-150S-2CheckOrder
TRF600-1600.160.32250410183600851.7Product SpecificationTRF600-160CheckOrder
TRF600-160-10.160.32250410183600851.7Product SpecificationTRF600-160-1CheckOrder
TRF600-160-20.160.32250410183600851Product SpecificationTRF600-160-2CheckOrder
TRF600-160-RA0.160.3225047163600851.7Product SpecificationTRF600-160-RACheckOrder
TRF600-160-RA-B- SpecificationTRF600-160-RA-B-0.5CheckOrder
TRF600-2500.250.8525014.373600852Product SpecificationTRF600-250CheckOrder
TRF600-4000.41600.951.451.93600852.4Product SpecificationTRF600-400CheckOrder
Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s)
A87878-000 TRF600-150 RoHS No 07/26/2017 PbFree No 07/26/2017 CoC_RoHS10_A87878-000_(TRF600-150)_10-28-2021 REACH219_Declaration_A87878-000_(TRF600-150)_10-28-2021 Yes
Does not Contain
F30347-000 TRF600-150-2 RoHS No 10/25/2016 PbFree No 10/25/2016 CoC_RoHS10_F30347-000_-TRF600-150-2-_09-28-2020 REACH211_Declaration_F30347-000_(TRF600-150-2)_04-08-2021 No
Does not Contain
D63282-000 TRF600-150-B-0.5 RoHS No 04/26/2016 PbFree No 04/26/2016 No
RF0625-000 TRF600-150-B-0.5-2 RoHS No 04/24/2018 PbFree No 04/24/2018 CoC_RoHS10_RF0625-000_-TRF600-150-B-0.5-2-_09-18-2020 REACH211_Declaration_RF0625-000_(TRF600-150-B-0.5-2)_05-13-2021 No
Does not Contain
F95456-000 TRF600-150-RB RoHS No 04/26/2016 PbFree No 04/26/2016 CoC_RoHS10_F95456-000_-TRF600-150-RB-_02-19-2020 REACH209_Declaration_F95456-000_-TRF600-150-RB-_09-28-2020 Yes
Does not Contain
RF0178-000 TRF600-150-RB-2 RoHS No 04/26/2016 PbFree No 04/26/2016 Yes
A71956-000 TRF600-150-RB-B-0.5 RoHS No 07/07/2019 PbFree No 07/07/2019 CoC_RoHS10_A71956-000_-TRF600-150-RB-B-0.5-_7-31-2019 REACH201_Declaration_A71956-000_-TRF600-150-RB-B-0.5-_7-31-2019 No
Does not Contain
RF0331-000 TRF600-150S RoHS No 04/26/2016 PbFree No 04/26/2016 Yes
RF0785-000 TRF600-150S-2 RoHS No 04/26/2016 PbFree No 04/26/2016 Yes
RF0071-000 TRF600-160 RoHS No 10/24/2016 PbFree No 10/24/2016 CoC_RoHS10_RF0071-000_-TRF600-160-_08-06-2020 REACH209_Declaration_RF0071-000_-TRF600-160-_08-06-2020 No
Does not Contain
RF0141-000 TRF600-160-1 RoHS No 04/26/2016 PbFree No 04/26/2016 Yes
RF0074-000 TRF600-160-2 RoHS No 01/26/2018 PbFree No 01/26/2018 CoC_REACh181_RF0074-000_-TRF600-160-2-_01-26-2018 REACH219_Declaration_RF0074-000_(TRF600-160-2)_11-12-2021 No
Does not Contain
RF0170-000 TRF600-160-RA RoHS No 02/20/2019 PbFree No 02/20/2019 No
RF0079-000 TRF600-160-RA-B-0.5 RoHS No 04/26/2016 PbFree No 04/26/2016 Yes
RF1926-000 TRF600-250 RoHS No 06/03/2019 PbFree No 06/03/2019 CoC_RoHS10_RF1926-000_-TRF600-250-_09-10-2019 REACH201_Declaration_RF1926-000_-TRF600-250-_09-10-2019 Yes
Does not Contain
RF0965-000 TRF600-400 RoHS No 10/24/2017 PbFree No 10/24/2017 CoC_REACh181_RF0965-000_-TRF600-400-_04-02-2018 No
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