PolySwitch Surface Mount Resettable PTCs

Littelfuse PolySwitch Surface-Mount (SMD) Resettable PTCs provide overcurrent protection for applications where space is at a premium, and resettable protection is desired. The components are reliable and capable of protecting computer and consumer electronics against temporary overcurrent faults. Package size varies from 0402 to 3425, while the current hold ranges from 50mA to 7.0A. The Littelfuse PolySwitch SMD product family is qualified to strict automotive standards (following the AECQ200 specification). As a result, these PTCs are suitable for protecting Electronic Control Units (ECUs) against damage from faults that would otherwise require costly, complete module replacement.

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Description Datasheet Availability Pricing (IDR) 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
Qualification
Packaging
Littelfuse Resettable Fuses - PPTC .6A 30V SMD AEC-Q200
Datasheet
4.617In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2.000

ASMD SMD/SMT SMD/SMT 600 mA 30 VDC 1.48 A 40 A 1 Ohms 2920 (7450 metric) - 40 C + 85 C AEC-Q100 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .14A 60V 10A Imax
Datasheet
78.933In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2.000

miniSMD SMD/SMT SMD/SMT 140 mA 60 VDC 280 mA 10 A 6 Ohms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .3A 60V 10A Imax
Datasheet
13.492In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2.000

SMD SMD/SMT SMD/SMT 300 mA 60 VDC 600 mA 10 A 4.8 Ohms 2920 (7450 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .5A 60V 10A Imax
Datasheet
25.009In Stock
34.000Expected 28/05/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2.000

SMD SMD/SMT SMD/SMT 500 mA 60 VDC 1 A 10 A 1.4 Ohms 2920 (7450 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .75A 30V 40A Imax
Datasheet
12.338In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2.000

SMD SMD/SMT SMD/SMT 750 mA 30 VDC 1.5 A 40 A 1 Ohms 2920 (7450 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 60V 750MA-HD 10A MAX
Datasheet
16.584In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2.000

SMD SMD/SMT SMD/SMT 750 mA 60 VDC 1.5 A 10 A 1 Ohms 2920 (7450 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 1.1A 33V 40A Imax
Datasheet
14.381In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2.000

SMD SMD/SMT SMD/SMT 1.1 A 33 VDC 2.2 A 40 A 410 mOhms 2920 (7450 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 1.8A 33V 40A Imax
Datasheet
13.687In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1.500

SMD SMD/SMT SMD/SMT 1.85 A 33 VDC 3.6 A 40 A 165 mOhms 3425 (8764 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 2A 15V 40A Imax
Datasheet
7.796In Stock
3.000Expected 20/04/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1.500

SMD SMD/SMT SMD/SMT 2 A 15 VDC 4 A 40 A 125 mOhms 3425 (8764 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 2.5A 15V 40A Imax
Datasheet
7.648In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1.500

SMD SMD/SMT SMD/SMT 2.5 A 15 VDC 5 A 40 A 85 mOhms 3425 (8764 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC SMDC310F/18-02
Datasheet
4.477In Stock
6.000Expected 19/03/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3.000

SMDC PCB Mount SMD/SMT 3.1 A 18 VDC 6 A 50 A 36 mOhms - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse RF5029-000
Littelfuse Resettable Fuses - PPTC 30V 100MA-HD 20A SMD
Datasheet
1.345In Stock
3.000Expected 18/03/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3.000

Automotive SMD SMD/SMT SMD/SMT 100 mA 30 VDC 300 mA 20 A 7.5 Ohms 1206 (3216 metric) - 40 C + 125 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 6V 350MA-HD 100A SMD
Datasheet
393In Stock
Min.: 1
Mult.: 1
Reel: 4.000

0805L SMD/SMT SMD/SMT 350 mA 6 VDC 750 mA 100 A 1.2 Ohms 0805 (2012 metric) - 40 C + 85 C Reel, Cut Tape

Littelfuse Resettable Fuses - PPTC 6V 3.5A-HD 50A SMD
Datasheet
852In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 4.000

Low Rho SMD/SMT SMD/SMT 3.5 A 6 VDC 7 A 50 A 25 mOhms 0805 (2012 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 60V 50MA-HD 50A SMD
Datasheet
2.117In Stock
3.000Expected 23/03/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3.000

1206L SMD/SMT SMD/SMT 50 mA 30 VDC 150 mA 10 A 20 Ohms 1206 (3216 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 30V 100MA-HD 10A SMD
Datasheet
5.491In Stock
Min.: 1
Mult.: 1
Reel: 3.000
1206L SMD/SMT SMD/SMT 100 mA 30 VDC 250 mA 10 A 10 Ohms 1206 (3216 metric) - 40 C + 85 C Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC PTC 6V 1206 1.5A POLYFUSE SMD THIN
Datasheet
3.099In Stock
9.000Expected 23/03/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3.000

1206L PCB Mount SMD/SMT 1.5 A 8 VDC 3 A 100 A 120 mOhms 1206 (3216 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 8V 1.5A-HD 100A SMD
Datasheet
1.566In Stock
Min.: 1
Mult.: 1
Reel: 3.000

1206L SMD/SMT SMD/SMT 1.5 A 8 VDC 3 A 100 A 120 mOhms 1206 (3216 metric) - 40 C + 85 C Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC PTC 6V POLY SURF MOUNT 1206 2.0A
Datasheet
145In Stock
12.000Expected 05/05/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2.000

1206L SMD/SMT SMD/SMT 2 A 6 VDC 3.5 A 100 A 80 mOhms 1206 (3216 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 0.35A 6V 1210
Datasheet
4.642In Stock
4.000Expected 08/05/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 4.000

1210L SMD/SMT SMD/SMT 350 mA 6 VDC 700 mA 100 A 1.3 Ohms 1210 (3225 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 6V POLYFUSE .750A 1210
Datasheet
2.931In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 4.000

1210L SMD/SMT SMD/SMT 750 mA 6 VDC 1.5 A 100 A 400 mOhms 1210 (3225 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 16V 1.50A 1210 PTC
Datasheet
3.036In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3.000

1210L PCB Mount SMD/SMT 1.5 A 16 VDC 3 A 100 A 110 mOhms 1210 (3225 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC PTC 6V 1210 1.5A POLYFUSE SMD THIN
Datasheet
4.656In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3.000

1210L SMD/SMT SMD/SMT 1.5 A 6 VDC 3 A 100 A 110 mOhms 1210 (3225 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC PTC 6V POLY SURF MOUNT 1210 1.75A
Datasheet
2.781In Stock
Min.: 1
Mult.: 1
Reel: 3.000

1210L SMD/SMT SMD/SMT 1.75 A 6 VDC 3.5 A 100 A 80 mOhms 1210 (3225 metric) - 40 C + 85 C Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC PTC 6V POLY SURF MOUNT 1210 2.0A
Datasheet
2.534In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2.000

1210L SMD/SMT SMD/SMT 2 A 6 VDC 4 A 100 A 70 mOhms 1210 (3225 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel