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 computers and consumer electronics against temporary overcurrent faults. Package sizes range 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 (per AECQ200). 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 12V 1.25A-HD 40A SMD
Datasheet
4 217In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3 000

Automotive SMD SMD/SMT SMD/SMT 1.25 A 12 VDC 3.75 A 40 A 300 mOhms 1210 (3225 metric) - 40 C + 125 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 170 mOhms 40 A 6 VDC - 40 C+ 85 C
Datasheet
10 773In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3 000

picoSMD PCB Mount SMD/SMT 1.1 A 6 VDC 2.2 A 40 A 170 mOhms - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 60V 0.20A 1812 PTC POLY SMT
Datasheet
3 754In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1 500

1812L SMD/SMT SMD/SMT 200 mA 60 VDC 400 mA 40 A 4.4 Ohms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 24V 500MA-HD 20A SMD
Datasheet
15 469In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3 000

nanoASMDCH SMD/SMT SMD/SMT 500 mA 24 VDC 2.5 A 20 A 200 mOhms 1206 (3216 metric) - 40 C + 125 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .05A 30V Micro SMD AEC-Q200
Datasheet
7 603In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4 000

microASMD SMD/SMT SMD/SMT 50 mA 30 VDC 150 mA 10 A 50 Ohms 1210 (3225 metric) - 40 C + 85 C AEC-Q100 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC SMDC310F/18-02
Datasheet
9 953In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 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 Resettable Fuses - PPTC 12V 0.1A Ih 5.8 Ohm
Datasheet
3 809In 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
107In Stock
4 000Expected 21/01/2027
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 5A 1210 POLYFUSE SURF MOUNT
Datasheet
817In Stock
Min.: 1
Mult.: 1
: 3 000

Low Rho PCB Mount SMD/SMT 5 A 6 VDC 10 A 50 A 12 mOhms - 40 C + 85 C Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC 6V 2920 2.60A POLYFUSE
Datasheet
268In Stock
2 000Expected 01/09/2026
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 PTC 6V POLY SURF MOUNT 1210 1.75A
Datasheet
2 695In 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 5.0A-HD 100A SMD
Datasheet
2 575In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1 500

2016L SMD/SMT SMD/SMT 5 A 6 VDC 10 A 100 A 25 mOhms 2016 (5041 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 13.2V 500MA-HD 70A SMD
Datasheet
2 671In 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 3 Ohms 40 A 9 VDC - 40 C+ 85 C
Datasheet
2 351In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 5 000

femtoSMD PCB Mount SMD/SMT 200 mA 9 VDC 450 mA 40 A 3 Ohms - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 15V 100A 9Ohms
Datasheet
3 420In 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 6V 2016 2A SURF MOUNT
Datasheet
2 566In 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 671In 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 1.2A 33V SMD AEC-Q200
Datasheet
2 946In Stock
Min.: 1
Mult.: 1
: 1 500

ASMD SMD/SMT SMD/SMT 1.2 A 33 VDC 2.88 A 40 A 230 mOhms 3425 (8763 metric) - 40 C + 85 C AEC-Q100 Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC .1A 15VDC 20A 0805 AEC-Q200
Datasheet
3 061In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3 000

picoASMD PCB Mount SMD/SMT 100 mA 15 VDC 300 mA 20 A 11 Ohms - 40 C + 85 C AEC-Q200 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 6V POLYFUSE 0805 LoRho SL 1.75A
Datasheet
1 057In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4 000

Low Rho SMD/SMT SMD/SMT 1.75 A 6 VDC 3.5 A 50 A 55 mOhms 0805 (2012 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 750MA-HD 40A SMD
Datasheet
2 222In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3 000

Automotive SMD SMD/SMT SMD/SMT 750 mA 12 VDC 2.25 A 40 A 460 mOhms 1206 (3216 metric) - 40 C + 125 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 12V 1.5A-HD 40A SMD
Datasheet
1 777In 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 .23A 60V SMD AEC-Q200
Datasheet
2 042In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2 000

ASMD PCB Mount SMD/SMT 230 mA 60 VDC 590 mA 10 A 4.8 Ohms - 40 C + 85 C AEC-Q100 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 2.6A 6V 40A Imax
Datasheet
3 587In 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