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 (EUR) 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 16V 1812 1.10A POLYFUSE
Datasheet
28 967In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1 500

1812L PCB Mount SMD/SMT 1.1 A 16 VDC 1.95 A 100 A 180 mOhms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 6Vdc 10A Nano SMD 3216MM 1206IN
Datasheet
3 672In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3 000

nanoSMD PCB Mount SMD/SMT 750 mA 6 VDC 2 A 10 A 360 mOhms - 40 C + 125 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 0805 6VDC 0.75A
Datasheet
3 025In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3 000

0805L SMD/SMT SMD/SMT 750 mA 6 VDC 1.5 A 40 A 350 mOhms 0805 (2012 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .12A 48V Nano SMD AEC-Q200
Datasheet
21 300In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3 000

nanoASMDC SMD/SMT SMD/SMT 120 mA 48 VDC 390 mA 10 A 6.5 Ohms 1206 (3216 metric) - 40 C + 85 C AEC-Q100 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 6V POLYFUSE 0805 LoRho SL 0.75A
Datasheet
3 401In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4 000

Low Rho SMD/SMT SMD/SMT 750 mA 6 VDC 1.5 A 50 A 150 mOhms 0805 (2012 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC PTC 6V POLYFUSE 1206 HALOGEN-FREE 1.75A
Datasheet
8 886In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2 000

1206L SMD/SMT SMD/SMT 1.75 A 6 VDC 3.5 A 100 A 90 mOhms 1206 (3216 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 6V POLYFUSE 1206 LoRho SL 3.50A
Datasheet
15 080In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4 000

Low Rho SMD/SMT SMD/SMT 3.5 A 6 VDC 7 A 50 A 18 mOhms 1206 (3216 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 33V 750MA-HD 100A 1812
Datasheet
6 620In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1 500

miniASMD SMD/SMT SMD/SMT 750 mA 33 VDC 1.6 A 100 A 390 mOhms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 16V 100MA-HD 40A SMD
Datasheet
9 467In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4 000

ASMDC SMD/SMT SMD/SMT 100 mA 16 VDC 600 mA 40 A 1 Ohms 0805 (2012 metric) - 40 C + 125 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC SMDC030F-2
Datasheet
6 092In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4 000

SMDC SMD/SMT SMD/SMT 2920 (7450 metric) + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 12V 0.1A Ih 5.8 Ohm
Datasheet
3 895In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4 000

femtoSMD SMD/SMT SMD/SMT 100 mA 12 VDC 250 mA 40 A 8 Ohms 0603 (1608 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 6V POLYFUSE 1210 LoRho SL 2.6A
Datasheet
1 460In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4 000

Low Rho SMD/SMT SMD/SMT 2.6 A 6 V 5 A 50 A 20 mOhms 1210 (3225 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 6V 2920 2.60A POLYFUSE
Datasheet
503In Stock
2 000Expected 14/09/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2 000

2920L SMD/SMT SMD/SMT 2.6 A 6 VDC 5 A 40 A 75 mOhms 2920 (7450 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 13.2V 500MA-HD 70A SMD
Datasheet
2 684In Stock
Min.: 1
Mult.: 1
miniASMD SMD/SMT SMD/SMT 500 mA 13.2 VDC 1.1 A 70 A 750 mOhms 1206 (3216 metric) - 40 C + 85 C
Littelfuse Resettable Fuses - PPTC .2A 30V Mini SMD AEC-Q200
Datasheet
5 391In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2 000

miniASMD SMD/SMT SMD/SMT 200 mA 30 VDC 400 mA 10 A 3.3 Ohms 1812 (4532 metric) - 40 C + 85 C AEC-Q100 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC MINISMDC300F-2
Datasheet
2 000In Stock
Min.: 2 000
Mult.: 2 000
: 2 000

miniSMD PCB Mount SMD/SMT 1812 (4532 metric) + 85 C Reel
Littelfuse Resettable Fuses - PPTC 15V 100A 9Ohms
Datasheet
3 770In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4 000

picoSMD PCB Mount SMD/SMT 120 mA 15 VDC 300 mA 100 A 9 Ohms - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 15V 2016 1.10A SURF MOUNT
Datasheet
3 751In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2 000

2016L SMD/SMT SMD/SMT 1.1 A 15 VDC 2.2 A 40 A 400 mOhms 2016 (5041 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 13.2V 500MA-HD 40A 1210
Datasheet
3 378In Stock
Min.: 1
Mult.: 1
miniASMD SMD/SMT SMD/SMT 500 mA 13.2 VDC 1 A 40 A 900 mOhms 1210 (3225 metric) - 40 C + 85 C
Littelfuse Resettable Fuses - PPTC 12V 1.5A-HD 40A SMD
Datasheet
1 797In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3 000

Automotive SMD SMD/SMT SMD/SMT 1.5 A 12 VDC 4.5 A 40 A 250 mOhms 1210 (3225 metric) - 40 C + 125 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 2.6A 6V 40A Imax
Datasheet
3 737In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2 000

SMD SMD/SMT SMD/SMT 2.6 A 6 VDC 5.2 A 40 A 75 mOhms 2920 (7450 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC PTC 6V POLY SURF MOUNT 1210 1.75A
Datasheet
2 770In Stock
Min.: 1
Mult.: 1
: 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 6V 2016 2A SURF MOUNT
Datasheet
2 616In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2 000

2016L SMD/SMT SMD/SMT 2 A 6 VDC 4.2 A 40 A 100 mOhms 2016 (5041 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .75A 24V Mini SMD AEC-Q200
Datasheet
2 794In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1 500

miniASMD SMD/SMT SMD/SMT 750 mA 24 VDC 1.5 A 40 A 290 mOhms 1812 (4532 metric) - 40 C + 85 C AEC-Q100 Reel, Cut Tape, MouseReel

Littelfuse Resettable Fuses - PPTC 6V 3.5A-HD 50A SMD
Datasheet
787In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 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