PolySwitch Telecommunication Resettable PTCs

Littelfuse PolySwitch Telecom Resettable PTCs are designed to protect against short-duration high-voltage fault currents typically found in telecom applications. These components help provide protection against damage caused by power cross and power induction surges, as well as help improve the reliability of customer premise and network equipment worldwide. Littelfuse PolySwitch Telecom Resettable PTCs are compatible with high-volume electronics assembly, assist in meeting regulatory equipment requirements, help improve line balance, and are applicable for legacy POTS and modern digital communications equipment. These devices are available in chip, surface-mount, or radial-leaded configurations.

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Description Datasheet Availability Pricing (CAD) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Series
Mounting Style
Termination Style
Hold Current
Maximum Voltage
Trip Current
Current Rating - Max
Resistance
Package / Case
Minimum Operating Temperature
Maximum Operating Temperature
Lead Spacing
Packaging
Littelfuse Resettable Fuses - PPTC TRF250-145T-2
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 1
Mult.: 1
Reel: 1,500
TRF250 PCB Mount Radial 145 mA 60 V 290 mA 3 A 7.5 Ohms - 40 C + 85 C 5 mm Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC 250V .145A-HD 3A MAX
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 10,000
Mult.: 500

TRF250 PCB Mount Radial 145 mA 60 V 290 mA 3 A 14 Ohms - 40 C + 85 C 5 mm Bulk
Littelfuse Resettable Fuses - PPTC
Datasheet
Product Comments
Non-Stocked Lead-Time 15 Weeks
Min.: 7,500
Mult.: 7,500

TRF250 PCB Mount Radial 145 mA 60 V 290 mA 3 A 12 Ohms - 40 C + 85 C 5 mm
Littelfuse Resettable Fuses - PPTC
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 1
Mult.: 1

TRF250 PCB Mount Radial 145 mA 60 V 290 mA 3 A 12 Ohms - 40 C + 85 C 5 mm Bulk
Littelfuse Resettable Fuses - PPTC
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 10,000
Mult.: 500

TRF250 PCB Mount Radial 145 mA 60 V 290 mA 3 A 12 Ohms - 40 C + 85 C 5 mm Bulk
Littelfuse Resettable Fuses - PPTC Polyswitch 0.183A kinked
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 1
Mult.: 1

TRF250 PCB Mount Radial 183 mA 100 VDC 685 mA 10 A 3.4 Ohms - 40 C + 85 C 5 mm Bulk
Littelfuse Resettable Fuses - PPTC 100V 10A 2.2Ohms
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 1
Mult.: 1
Reel: 1,500

TRF250 PCB Mount Radial 183 mA 100 VDC 685 mA 10 A 3.4 Ohms - 40 C + 85 C 5 mm Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC Polyswitch 0.183A Straight
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 1
Mult.: 1
Reel: 1,500

TRF250 PCB Mount Radial 183 mA 100 V 685 mA 3 A 3.4 Ohms - 40 C + 85 C 5 mm Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC Polyswitch 0.183A Uncoated
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 1
Mult.: 1

TRF250 PCB Mount Radial 183 mA 100 VDC 685 mA 10 A 3.4 Ohms - 40 C + 85 C 5 mm Bulk
Littelfuse Resettable Fuses - PPTC Polyswitch 0.183A Uncoated Straight
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 1
Mult.: 1

TRF250 PCB Mount Radial 183 mA 100 V 685 mA 3 A 3.4 Ohms - 40 C + 85 C 5 mm Bulk
Littelfuse Resettable Fuses - PPTC 250V .12A-HD 3A MAX
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 1
Mult.: 1

TRF250 PCB Mount Radial 120 mA 60 VDC 240 mA 3 A 16 Ohms - 40 C + 85 C 5 mm Bulk
Littelfuse Resettable Fuses - PPTC 60V 3A 10.5Ohms
Datasheet
Non-Stocked
Min.: 1
Mult.: 1
Reel: 1,500

TRF250 PCB Mount Radial 120 mA 60 V 240 mA 3 A 10.5 Ohms - 40 C + 85 C 5 mm Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC .12A 250V
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 10,000
Mult.: 500

TRF250 PCB Mount Radial 120 mA 60 V 240 mA 3 A 14 Ohms - 40 C + 85 C 5 mm Bulk
Littelfuse Resettable Fuses - PPTC .12A 250V
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 1,500
Mult.: 1,500
Reel: 1,500

TRF250 PCB Mount Radial 120 mA 60 V 240 mA 3 A 16 Ohms - 40 C + 85 C 5 mm Reel
Littelfuse Resettable Fuses - PPTC 250V .145A-HD 3A MAX
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 10,000
Mult.: 500

TRF250 PCB Mount Radial 145 mA 60 V 290 mA 3 A 12 Ohms - 40 C + 85 C Bulk
Littelfuse Resettable Fuses - PPTC 600V .15A-HD 3A MAX
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 1
Mult.: 1

TRF600 PCB Mount Radial 150 mA 250 VDC 300 mA 3 A 17 Ohms - 40 C + 85 C 5 mm Bulk
Littelfuse Resettable Fuses - PPTC Polyswitch 0.3A
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 1,500
Mult.: 1,500
Reel: 1,500

TRF600 PCB Mount Radial 150 mA 250 VDC 300 mA 3 A 17 Ohms - 40 C + 85 C 5 mm Reel
Littelfuse Resettable Fuses - PPTC 600V .16A-HD 3A MAX
Datasheet
Non-Stocked Lead-Time 17 Weeks
Min.: 1
Mult.: 1

TRF600 PCB Mount Radial 160 mA 250 V 320 mA 3 A 18 Ohms - 40 C + 85 C 5 mm Bulk
Littelfuse Resettable Fuses - PPTC .16A 250Vdc 600V RMS
Datasheet
Non-Stocked Lead-Time 17 Weeks
Min.: 1
Mult.: 1
Reel: 600

TRF600 PCB Mount Radial 160 mA 250 VDC 320 mA 3 A 18 Ohms - 40 C + 85 C 5 mm Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC .16A 250Vdc 600Vrms
Datasheet
Non-Stocked Lead-Time 17 Weeks
Min.: 10,000
Mult.: 500

TRF600 PCB Mount Radial 160 mA 250 V 320 mA 3 A 16 Ohms - 40 C + 85 C Bulk
Littelfuse Resettable Fuses - PPTC 600V .15A-HD 3A MAX
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 10,000
Mult.: 500

TRF600 PCB Mount Radial 130 mA 250 VDC 300 mA 3 A 22 Ohms - 40 C + 85 C 5 mm Bulk
Littelfuse Resettable Fuses - PPTC .13A 60Vdc 250Vrms
Datasheet
Non-Stocked
Min.: 7,500
Mult.: 1,500
Reel: 1,500

TS250 PCB Mount SMD/SMT 130 mA 60 V 260 mA 1 A 20 Ohms Non-standard - 40 C + 85 C Reel
Littelfuse Resettable Fuses - PPTC Polyswitch 0.26A
Datasheet
Non-Stocked Lead-Time 19 Weeks
Min.: 7,500
Mult.: 1,500
Reel: 1,500

TS250 PCB Mount SMD/SMT 130 mA 60 V 260 mA 17 Ohms - 40 C + 85 C Reel
Littelfuse Resettable Fuses - PPTC .40A 60Vdc 600Vrms
Datasheet
Non-Stocked Lead-Time 19 Weeks
MouseReel Available
Min.: 1
Mult.: 1
Reel: 300

TS600 PCB Mount SMD/SMT 400 mA 60 VDC 1 A 3 A 2 Ohms - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 12 Ohms 3 A 60 VDC - 40 C+ 85 C
Datasheet
Non-Stocked Lead-Time 19 Weeks
Min.: 1,500
Mult.: 1,500
Reel: 1,500

TSL250 PCB Mount SMD/SMT 130 mA 60 VDC 260 mA 3 A 12 Ohms - 40 C + 85 C Reel