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 .12A 250V
Datasheet
4,089In Stock
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 PTC POLYFUSE TELECOM 60V/250V .080A
Datasheet
4,538In Stock
Min.: 1
Mult.: 1
Reel: 1,200

250R PCB Mount Radial 80 mA 60 VDC 160 mA 3 A 33 Ohms - 40 C + 85 C 5.1 mm Ammo Pack
Littelfuse Resettable Fuses - PPTC 600V .15A-HD 3A MAX
Datasheet
3,221In Stock
Min.: 1
Mult.: 1

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 PTC 250/60V POLYFUSE SMD RB
Datasheet
2,965In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,500

250S PCB Mount SMD/SMT 130 mA 60 VDC 260 mA 3 A 13 Ohms - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC TRF600-160-RA-B-0.5
Datasheet
6,895In Stock
Min.: 1
Mult.: 1

TRF600 PCB Mount Radial 160 mA 250 VDC 320 mA 3 A 16 Ohms - 40 C + 85 C 5 mm
Littelfuse Resettable Fuses - PPTC 250V 3A 10Ohms
Datasheet
415In Stock
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 250V .12A-HD 3A MAX
Datasheet
3,870In Stock
Min.: 1
Mult.: 1
Reel: 1,500

TRF250 PCB Mount Radial 120 mA 60 VDC 240 mA 3 A 16 Ohms - 40 C + 85 C 5 mm Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC PTC 60V/250V.120A POLY TELECOM
Datasheet
699In Stock
Min.: 1
Mult.: 1
Reel: 1,200

250R PCB Mount Radial 120 mA 60 VDC 240 mA 3 A 16 Ohms - 40 C + 85 C 5.1 mm Ammo Pack
Littelfuse Resettable Fuses - PPTC 0.12A 250V RADIAL
Datasheet
3,578In Stock
Min.: 1
Mult.: 1

250R PCB Mount Radial 120 mA 60 VDC 240 mA 3 A 16 Ohms - 40 C + 85 C 5.1 mm Bulk
Littelfuse Resettable Fuses - PPTC PTC 60V/250V.145A POLY TELECOM
Datasheet
1,850In Stock
Min.: 1
Mult.: 1
Reel: 1,200

250R PCB Mount Radial 145 mA 60 VDC 290 mA 3 A 14 Ohms - 40 C + 85 C 5.1 mm Ammo Pack
Littelfuse Resettable Fuses - PPTC 60V 3A 25Ohms
Datasheet
2,168In Stock
Min.: 1
Mult.: 1

TRF250 PCB Mount Radial 55 mA 60 VDC 170 mA 3 A 35 Ohms - 40 C + 85 C 5 mm Bulk
Littelfuse Resettable Fuses - PPTC Polyswitch 0.26A Restive Range -2
Datasheet
1,549In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,500

TS250 PCB Mount SMD/SMT 130 mA 60 VDC 260 mA 3 A 15 Ohms - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 600V .15A-HD 3A MAX
Datasheet
27,864In Stock
Min.: 1
Mult.: 1
Reel: 1,500

TRF600 PCB Mount Radial 150 mA 250 VDC 300 mA 3 A 17 Ohms - 40 C + 85 C 5 mm Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC 250/60V 0.13A PTC Vertical
Datasheet
6,002In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,200

250S PCB Mount SMD/SMT 130 mA 60 VDC 260 mA 3 A 13 Ohms - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .08A 60Vdc MAX 250Vrms MAX
Datasheet
19,795In Stock
Min.: 1
Mult.: 1

TRF250 PCB Mount Radial 80 mA 60 VDC 160 mA 3 A 33 Ohms - 40 C + 85 C 5 mm Bulk
Littelfuse Resettable Fuses - PPTC .145A 60Vdc MAX 250Vrms MAX
Datasheet
4,362In Stock
Min.: 1
Mult.: 1

TRF250 PCB Mount Radial 145 mA 60 VDC 290 mA 3 A 14 Ohms - 40 C + 85 C 5 mm Bulk
Littelfuse Resettable Fuses - PPTC .15A 250Vdc 3A RMS INTER
Datasheet
9,773In Stock
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 7 Ohms 3 A 250 VDC - 40 C+ 85 C
Datasheet
1,961In Stock
Min.: 1
Mult.: 1

TRF600 PCB Mount Radial 250 mA 250 VDC 850 mA 3 A 7 Ohms - 40 C + 85 C 5 mm Bulk
Littelfuse Resettable Fuses - PPTC Polyswitch 0.26A
Datasheet
3,409In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,500

TS250 PCB Mount SMD/SMT 130 mA 60 VDC 260 mA 3 A 20 Ohms - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 600V .13A-HD 3A MAX (R)
Datasheet
2,458In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 300

TS600 PCB Mount SMD/SMT 170 mA 60 VDC 400 mA 3 A 18 Ohms - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC PolySwitch Surface Mount Resettable PPTC
Datasheet
988In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 300

TS600 PCB Mount SMD/SMT 200 mA 60 VDC 400 mA 3 A 13.5 Ohms - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 250V .250A-HD 3A MAX
Datasheet
1,213In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 200

TSM600 PCB Mount SMD/SMT 250 mA 250 VDC 860 mA 3 A 7 Ohms - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC Polyswitch 0.13A
Datasheet
12,405In Stock
9,600Expected 2026-04-06
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,200

TSV250 PCB Mount SMD/SMT 130 mA 60 VDC 260 mA 3 A 12 Ohms - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 60V/250V .080A TELECOM
Datasheet
2,052In Stock
Min.: 1
Mult.: 1

250R PCB Mount Radial 80 mA 60 VDC 160 mA 3 A 33 Ohms - 40 C + 85 C 5.1 mm Bulk
Littelfuse Resettable Fuses - PPTC FTC 250V POLYFUSE SMD
Datasheet
356In Stock
1,500Expected 2026-04-13
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,500

250S PCB Mount SMD/SMT 130 mA 60 VDC 260 mA 3 A 13 Ohms - 40 C + 85 C Reel, Cut Tape, MouseReel