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 (KRW) 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 0.12A 250V RADIAL
Datasheet
3,908In 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 TRF600-160-RA-B-0.5
Datasheet
6,515In 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
255In 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 0.15A 600V RADIAL
Datasheet
1,267In Stock
Min.: 1
Mult.: 1
: 1,200

600R PCB Mount Radial 150 mA 60 VDC 300 mA 3 A 22 Ohms - 40 C + 85 C 5.1 mm Ammo Pack
Littelfuse Resettable Fuses - PPTC PTC 60V/250V.145A POLY TELECOM
Datasheet
1,828In Stock
Min.: 1
Mult.: 1
: 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 .08A 60Vdc MAX 250Vrms MAX
Datasheet
17,795In 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 .12A 60VDC 250VRMS
Datasheet
7,675In Stock
2,000On Order
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 .145A 60Vdc MAX 250Vrms MAX
Datasheet
4,755In Stock
5,500Expected 10/21/2026
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
8,401In 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 600V .15A-HD 3A MAX
Datasheet
22,271In Stock
Min.: 1
Mult.: 1
: 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 .15A 250Vdc 600Vrms
Datasheet
7,631In Stock
Min.: 1
Mult.: 1
: 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 .16A 250V DC 600V
Datasheet
2,471In Stock
Min.: 1
Mult.: 1

TRF600 PCB Mount Radial 160 mA 250 VDC 320 mA 3 A 18 Ohms - 40 C + 85 C 5 mm Bulk
Littelfuse Resettable Fuses - PPTC 7 Ohms 3 A 250 VDC - 40 C+ 85 C
Datasheet
1,883In 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
3,965In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 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
1,713In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 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
: 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 Polyswitch 0.13A
Datasheet
26,587In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 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
1,448In 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 PTC POLYFUSE TELECOM 60V/250V .080A
Datasheet
1,976In Stock
Min.: 1
Mult.: 1
: 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 PTC 60V/250V.120A POLY TELECOM
Datasheet
330In Stock
Min.: 1
Mult.: 1
: 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 PTC 60V/250V.120A POLY TELECOM
Datasheet
1,200In Stock
1,200Expected 9/28/2026
Min.: 1
Mult.: 1
: 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 PTC 60V/250V.120A POLY TELECOM
Datasheet
1,073In Stock
Min.: 1
Mult.: 1
: 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 0.18A 250V RADIAL
Datasheet
215In Stock
Min.: 1
Mult.: 1

250R PCB Mount Radial 180 mA 60 V 650 mA 10 A 4 Ohms - 40 C + 85 C 5.1 mm Bulk
Littelfuse Resettable Fuses - PPTC PTC 250/60V POLYFUSE SMD RA
Datasheet
2,167In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

250S PCB Mount SMD/SMT 130 mA 60 VDC 260 mA 3 A 10 Ohms - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC PTC 250/60V POLYFUSE SMD RB
Datasheet
2,603In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 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