PolySwitch Resettable PPTCs Telecom > Radial Leaded > TR Series RoHS TR Series Description 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 IEC 62368-1. Our offering includes chip, surface-mount and radial-leaded configurations. Applications Networking Machines and Systems Modems Analog and digital line cards Features Phone sets xDSL modems and splitters Resettable overcurrent protection Fax machines Powered Ethernet systems Fast time-to-trip Phone wall outlets VoIP (Voice over Internet Resistance sorted and matched devices available Protocol) equipment Alarm systems Low parasitic capacitance/flat impedance with frequency LAN, WAN equipment PBX systems Recognized to UL 1434, approved to CSA TIL No. CA-3A Customer premise equipment MDF modules and EN 60730-1. Access network hardware T1/E1 equipment Agency Approvals Additional Information AGENCY AGENCY FILE/CERTIFICATE NUMBER E74889* Datasheet Resources Samples 78166* 72161787* * See Electrical Characteristic Table for approved part numbers. Electrical Characteristics V I MAX MAX Part I I Operating Interrupt Interrupt P Max Time-to-trip R R R Agency Approvals H T D Typ MIN MAX 1MAX Number (A) (A) (V ) (V ) (A) (W) (A) (s) () () () DC RMS TRF250 Radial-leaded* 250V AC TRF250-055T 0.055 0.170 60 250 3.0 0.6 0.28 3.5 15.0 25.0 35.0 TRF250-055UT 0.055 0.170 60 250 3.0 0.6 0.28 3.0 15.0 25.0 35.0 TRF250-080T 0.080 0.160 60 250 3.0 0.6 0.35 4.0 15.0 22.0 33.0 x x x TRF250-080U 0.080 0.160 60 250 3.0 0.6 0.35 2.5 14.0 20.0 33.0 x x x TRF250-110U 0.110 0.220 60 250 3.0 0.6 1.00 0.8 5.0 9.0 16.0 x x x TRF250-120 0.120 0.240 60 250 3.0 0.8 1.00 1.5 4.0 8.0 16.0 x x x TRF250-120T 0.120 0.240 60 250 3.0 0.8 1.00 0.7 7.0 12.0 16.0 2019 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 06/04/19 PolySwitch Resettable PTCs Telecom > Radial Leaded > TR Series Electrical Characteristics V I MAX MAX Part I I Operating Interrupt Interrupt P Max Time-to-trip R R R Agency Approvals H T D Typ MIN MAX 1MAX Number (A) (A) (V ) (V ) (A) (W) (A) (s) () () () DC RMS TRF250 Radial-leaded* 250V AC TRF250-120T-RA 0.120 0.240 60 250 3.0 0.8 1.00 1.2 7.0 9.0 16.0 TRF250-120T-RC 0.130 0.260 60 250 3.0 0.8 1.00 3.0 5.4 7.5 14.0 TRF250-120T-RF 0.120 0.240 60 250 3.0 0.8 1.00 0.9 6.0 10.5 16.0 TRF250-120T-RH 0.120 0.240 60 250 3.0 0.8 1.00 0.7 9.0 11.0 16.0 TRF250-120T-R1 0.120 0.240 60 250 3.0 0.8 1.00 0.7 6.0 9.0 16.0 TRF250-120T-R2 0.120 0.240 60 250 3.0 0.8 1.00 0.8 8.0 10.5 16.0 TRF250-120U 0.120 0.240 60 250 3.0 0.7 1.00 1.0 6.0 10.0 16.0 x x x TRF250-120UT 0.120 0.240 60 250 3.0 0.7 1.00 0.7 7.0 12.0 16.0 TRF250-145 0.145 0.290 60 250 3.0 0.8 1.00 2.5 3.0 6.0 14.0 x x x TRF250-145-RA 0.145 0.290 60 250 3.0 0.8 1.00 2.5 3.0 6.0 12.0 TRF250-145T 0.145 0.290 60 250 3.0 0.8 1.00 1.5 5.4 7.5 14.0 TRF250-145U 0.145 0.290 60 250 3.0 0.7 1.00 2.0 3.5 6.5 14.0 x x x TRF250-180 0.180 0.650 100 250 10.0 0.9 3.00 0.5 0.8 2.2 4.0 x x x TRF250-183 0.183 0.685 100 250 10.0 0.9 3.00 0.6 0.8 2.0 3.4 x x x TRF250-183U 0.183 0.685 100 250 10.0 0.9 3.00 0.6 0.8 2.0 3.4 x x x TRF250-184 0.184 1.000 100 250 10.0 0.9 3.00 0.5 1.2 2.4 3.1 x x x TRF600 Radial-leaded 600V AC TRF600-150 0.150 0.300 250 600 3.0 1.4 1.0 1.4 6.0 10.0 17.0 x x x TRF600-150-RB 0.150 0.300 250 600 3.0 1.4 1.0 1.0 9.0 12.0 22.0 TRF600-150-R2 0.150 0.300 250 600 3.0 1.4 1.0 1.3 7.0 10.0 17.0 TR600-150F-EX 0.150 0.300 250 600 3.0 1.4 1.0 5.0 6.0 12.0 22.0 TR600-150F-EX-RB 0.150 0.300 250 600 3.0 1.4 1.0 5.0 9.0 12.0 22.0 TRF600-160 0.160 0.320 250 600 3.0 1.7 1.0 7.5 4.0 10.0 18.0 x x x TRF600-160-RA 0.160 0.320 250 600 3.0 1.7 1.0 9.5 4.0 7.0 16.0 TRF600-250 0.250 0.850 250 600 3.0 2.0 3.0 1.0 1.0 4.3 7.0 x x x TRF600-400 0.400 1.000 60 600 3.0 2.4 3.0 4.0 0.95 1.45 1.90 x x x Notes: I : Hold current: maximum current device will pass without interruption in 20C still air. H I : Trip current: minimum current that will switch the device from low resistance to high resistance in 20C still air. T V Operating : Maximum continuous voltage device can withstand without damage at rated current. This voltage is used for component Recognition under UL1434. MAX V Interrupt : Maximum voltage that can be safely placed across a device in its tripped state. MAX I Interrupt : Maximum fault current device can withstand without damage at rated operating voltage. This current is used for component Recognition under UL1434. Devices may trip MAX safely under higher level power cross conditions to assist equipment in meeting the appropriate ITU, UL60950 or GR1089 industry requirements. P : Power dissipated from device when in the tripped state in 20C still air. D R : Minimum resistance of device as supplied at 20C unless otherwise specified. MIN R : Maximum resistance of device as supplied at 20C unless otherwise specified. MAX R : Maximum resistance measured one hour post-trip or post-reflow at 20C. 1MAX * 250V interrupt products may help equipment pass ITU K.20, K.21 and K.45 recommendations and Telcordia GR-1089 Port Type 2 and 4 requirements. AC 600V interrupt products may help equipment pass UL60950, TIA-968-A and GR1089 Port Type 1, 3 and 5 requirements. AC Product is not currently available in a resistance matched or sorted option. 2019 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 06/04/19