TRF250 Series - 250V PolySwitch Lead-Free Radial Leaded Resettable PPTC for Telecom Protection

TRF250
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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.

Features:
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

Benefits:

  • 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

Applications:
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
(A)
Max Volts
(V)
RMIN
(Ω)
Rmax
(Ω)
R1max
(Ω)
Interrupt Current (A)Interrupt Voltage (Vrms)Pd Typical (watts)Max Operating Temp (°C)Packaging
Method
Product
Specification
StockSamplesCompare
TRF250-055T0.0550.176015253532500.685Loose PieceProduct SpecificationCheckOrder
TRF250-055UT0.0550.176015253532500.685Loose PieceProduct SpecificationCheck
TRF250-080T0.080.166015223332500.685Bag/BoxProduct SpecificationCheck
TRF250-080U0.080.166014203332500.685Bag/BoxProduct SpecificationCheck
TRF250-110U0.110.2260591632500.685BagProduct SpecificationCheckOrder
TRF250-110U-B-0.5-20.110.2260591632500.685Tape & ReelProduct SpecificationCheck
TRF250-1200.120.2460481632500.885BagProduct SpecificationCheck
TRF250-120-20.120.2460481632500.885Tape & ReelProduct SpecificationCheck
TRF250-120-B-0.50.120.2460481632500.885Loose PieceProduct SpecificationCheck
TRF250-120S-B-0.50.120.2460481632500.885Loose PieceProduct SpecificationCheckOrder
TRF250-120T0.120.24607121632500.885BagProduct SpecificationCheck
TRF250-120T-20.120.24607121632500.885Tape & ReelProduct SpecificationCheck
TRF250-120T-B-0.50.120.24607121632500.885BagProduct SpecificationCheckOrder
TRF250-120T-R1-B-0.50.120.2460691632500.885BagProduct SpecificationCheck
TRF250-120T-R2-B-0.50.120.2460810.51632500.885Loose Piece|Bag/BoxProduct SpecificationCheck
TRF250-120T-R2-B-0.5-20.120.2460810.51632500.885Tape & ReelProduct SpecificationCheckOrder
TRF250-120T-RA-B-0.50.120.2460791632500.885BagProduct SpecificationCheck
TRF250-120T-RC-B-0.50.130.26605.47.51432500.885Loose PieceProduct SpecificationCheck
TRF250-120T-RF-B-0.50.120.2460610.51632500.885BagProduct SpecificationCheckOrder
TRF250-120T-RF-B-0.5-20.120.2460610.51632500.885Tape & ReelProduct SpecificationCheck
TRF250-120T-RH-B-0.50.120.24609111632500.885Loose PieceProduct SpecificationCheckOrder
TRF250-120U0.120.24606101632500.785BagProduct SpecificationCheck
TRF250-120U-20.120.24606101632500.785Tape & ReelProduct SpecificationCheck
TRF250-120US0.120.24606101632500.785Bag/Box|Loose PieceProduct SpecificationCheck
TRF250-120US-20.120.24606101632500.785Tape & ReelProduct SpecificationCheck
TRF250-120UT0.120.24607121632500.785BagProduct SpecificationCheckOrder
TRF250-1450.1450.2960361432500.885BagProduct SpecificationCheck
TRF250-145-20.1450.2960361432500.885Tape & ReelProduct SpecificationCheck
TRF250-145-B-0.50.1450.2960361432500.885BagProduct SpecificationCheck
TRF250-145-RA-B-0.50.1450.2960361432500.885BagProduct SpecificationCheck
TRF250-145T0.1450.29605.47.51432500.885BagProduct SpecificationCheck
TRF250-145T-20.1450.29605.47.51432500.885Tape & ReelProduct SpecificationCheck
TRF250-145T-B-0.50.1450.29605.47.51432500.885Loose PieceProduct SpecificationCheck
TRF250-145U0.1450.29603.56.51432500.785BagProduct SpecificationCheck
TRF250-145U-20.1450.29603.56.51432500.785Tape & ReelProduct SpecificationCheckOrder
TRF250-145US0.1450.29603.56.51432500.785Loose PieceProduct SpecificationCheckOrder
TRF250-145US-B-0.50.1450.29603.56.51432500.785BagProduct SpecificationCheck
TRF250-1800.180.651000.82.24102500.985BagProduct SpecificationCheck
TRF250-180-20.180.651000.82.24102500.985Tape & ReelProduct SpecificationCheck
TRF250-180-AP0.180.651000.82.24102500.985Ammo PackProduct SpecificationCheckOrder
TRF250-1830.1830.6851000.823.4102500.985BagProduct SpecificationCheck
TRF250-183-20.1830.6851000.823.4102500.985Tape & ReelProduct SpecificationCheck
TRF250-183S0.1830.6851000.823.4102500.985BagProduct SpecificationCheckOrder
TRF250-183S-20.1830.6851000.823.4102500.985Tape & ReelProduct SpecificationCheck
TRF250-183U0.1830.6851000.823.4102500.985BagProduct SpecificationCheckOrder
TRF250-183US0.1830.6851000.823.4102500.985BagProduct SpecificationCheckOrder
TRF250-1840.18411001.22.43.1102500.985Loose PieceProduct SpecificationCheck
Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s)
RF1968-000 RoHS No 06/27/2019 PbFree No 06/27/2019 Yes
06/27/2019
RF1647-000 RoHS No 04/26/2016 PbFree No 04/26/2016 Yes
04/26/2016
RF0124-000 RoHS No 02/06/2017 PbFree No 02/06/2017 No
02/06/2017
RF0125-000 RoHS No 02/20/2019 PbFree No 02/20/2019 No
02/20/2019
RF0126-000 RoHS No 04/26/2016 PbFree No 04/26/2016 Yes
04/26/2016
RF4282-000 RoHS No 04/26/2016 PbFree No 04/26/2016 Yes
04/26/2016
RF0008-000 RoHS No 10/27/2016 PbFree No 10/27/2016 No
10/27/2016
RF0012-000 RoHS No 09/02/2018 PbFree No 09/02/2018 No
09/02/2018
RF1682-000 RoHS No 04/26/2016 PbFree No 04/26/2016 Yes
04/26/2016
RF0430-000 RoHS No 04/26/2016 PbFree No 04/26/2016 Yes
04/26/2016
RF0013-000 RoHS No 10/17/2017 PbFree No 10/17/2017 REACH191_Declaration_RF0013-000_07-17-2018 No
10/17/2017
Does not Contain
RF0537-000 RoHS No 04/26/2016 PbFree No 04/26/2016 Yes
04/26/2016
RF0014-000 RoHS No 04/26/2016 PbFree No 04/26/2016 Yes
04/26/2016
RF0015-000 RoHS No 06/01/2017 PbFree No 06/01/2017 No
06/01/2017
RF0425-000 RoHS No 02/20/2017 PbFree No 02/20/2017 No
02/20/2017
RF0327-000 RoHS No 05/17/2019 PbFree No 05/17/2019 No
05/17/2019
RF0016-000 RoHS No 04/26/2016 PbFree No 04/26/2016 Yes
04/26/2016
RF0361-000 RoHS No 04/26/2016 PbFree No 04/26/2016 Yes
04/26/2016
RF0105-000 RoHS No 04/26/2016 PbFree No 04/26/2016 Yes
04/26/2016
RF0668-000 RoHS No 04/26/2016 PbFree No 04/26/2016 Yes
04/26/2016
RF2519-000 RoHS No 05/29/2019 PbFree No 05/29/2019 No
05/29/2019
RF0017-000 RoHS No 04/26/2016 PbFree No 04/26/2016 Yes
04/26/2016
RF0150-000 RoHS No 04/26/2016 PbFree No 04/26/2016 Yes
04/26/2016
RF0019-000 RoHS No 04/26/2016 PbFree No 04/26/2016 Yes
04/26/2016
RF0431-000 RoHS No 04/26/2016 PbFree No 04/26/2016 Yes
04/26/2016
RF0018-000 RoHS No 04/26/2016 PbFree No 04/26/2016 Yes
04/26/2016
RF0021-000 RoHS No 01/27/2017 PbFree No 01/27/2017 No
01/27/2017
RF0035-000 RoHS No 06/27/2018 PbFree No 06/27/2018 No
06/27/2018
RF0043-000 RoHS No 04/26/2016 PbFree No 04/26/2016 Yes
04/26/2016
RF0044-000 RoHS No 04/26/2016 PbFree No 04/26/2016
05/27/2019
RF0022-000 RoHS No 04/26/2016 PbFree No 04/26/2016 Yes
04/26/2016
RF4278-000 RoHS No 04/26/2016 PbFree No 04/26/2016 Yes
04/26/2016
RF0045-000 RoHS No 04/26/2016 PbFree No 04/26/2016 Yes
04/26/2016
RF0027-000 RoHS No 04/26/2016 PbFree No 04/26/2016 Yes
04/26/2016
RF0036-000 RoHS No 04/26/2016 PbFree No 04/26/2016 Yes
04/26/2016
RF0029-000 RoHS No 04/26/2016 PbFree No 04/26/2016 Yes
04/26/2016
RF0030-000 RoHS No 04/26/2016 PbFree No 04/26/2016 Yes
04/26/2016
E46226-000 RoHS No 07/12/2018 PbFree No 07/12/2018 No
07/12/2018
C32417-000 RoHS No 12/27/2016 PbFree No 12/27/2016 No
12/27/2016
RF3446-000 RoHS No 04/26/2016 PbFree No 04/26/2016 Yes
04/26/2016
RF0768-000 RoHS No 05/17/2018 PbFree No 05/17/2018 No
05/17/2018
RF1809-000 RoHS No 11/04/2016 PbFree No 11/04/2016 No
11/04/2016
RF0769-000 RoHS No 05/17/2018 PbFree No 05/17/2018 No
05/17/2018
RF0841-000 RoHS No 04/26/2016 PbFree No 04/26/2016 Yes
04/26/2016
RF0770-000 RoHS No 04/26/2016 PbFree No 04/26/2016 Yes
04/26/2016
RF0771-000 RoHS No 04/26/2016 PbFree No 04/26/2016 Yes
04/26/2016
RF1135-000 RoHS No 05/12/2017 PbFree No 05/12/2017 No
05/12/2017
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