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 (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 .14A 60V 10A Imax
Datasheet
59.197In Stock
78.000Expected 19/10/2026
MouseReel Available
Min.: 1
Mult.: 1
: 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 .2A 30V 10A Imax
Datasheet
20.198In Stock
31.800Expected 02/09/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2.000

miniSMD SMD/SMT SMD/SMT 200 mA 30 VDC 400 mA 10 A 3.3 Ohms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 30V 40A 1.75Ohms
Datasheet
16.405In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.000

miniSMD SMD/SMT SMD/SMT 300 mA 30 VDC 600 mA 40 A 1.75 Ohms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .50A 24V 100A Imax
Datasheet
37.210In Stock
86.000Expected 13/10/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2.000

miniSMD SMD/SMT SMD/SMT 500 mA 24 VDC 1 A 100 A 1 Ohms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .75A 13.2V 100A Imax
Datasheet
18.691In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.000

miniSMD SMD/SMT SMD/SMT 750 mA 13.2 VDC 1.5 A 100 A 450 mOhms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 24V 750MA-HD 40A MAX
Datasheet
13.096In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1.500

miniSMD SMD/SMT SMD/SMT 750 mA 24 VDC 1.5 A 40 A 290 mOhms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 33V 750MA-HD 100A MAX
Datasheet
25.057In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1.500

miniSMD 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 1.5A 6V 100A Imax
Datasheet
8.944In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.000

miniSMD SMD/SMT SMD/SMT 1.5 A 6 VDC 3 A 100 A 110 mOhms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 24V 1.5A-HD 20A MAX
Datasheet
5.267In Stock
24.000Expected 13/10/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

miniSMD SMD/SMT SMD/SMT 1.5 A 24 VDC 3 A 20 A 120 mOhms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 2A 8V 100A Imax
Datasheet
6.337In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.000

miniSMD SMD/SMT SMD/SMT 2 A 8 VDC 4 A 100 A 70 mOhms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 16Vdc 100A MINI-SMD
Datasheet
23.708In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1.500

miniSMD SMD/SMT SMD/SMT 2.6 A 16 VDC 5 A 100 A 50 mOhms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .12A 48V Nano SMD AEC-Q200
Datasheet
7.712In 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 .35A 16V Nano SMD AEC-Q200
Datasheet
8.385In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

nanoASMDC SMD/SMT SMD/SMT 350 mA 16 VDC 750 mA 20 A 1.35 Ohms 1206 (3216 metric) - 40 C + 85 C AEC-Q100 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .5A 13.2V 100A Imax
Datasheet
32.876In Stock
54.000Expected 13/10/2026
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

nanoSMD SMD/SMT SMD/SMT 500 mA 13.2 VDC 1.1 A 100 A 800 mOhms 1206 (3216 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC NANOSMDC010F-2
Datasheet
14.026In Stock
51.000Expected 27/10/2026
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

nanoSMD SMD/SMT SMD/SMT 100 mA 60 VDC 250 mA 10 A 15 Ohms 1206 (3216 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .12A 48V
Datasheet
33.828In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

nanoSMD SMD/SMT SMD/SMT 120 mA 48 VDC 390 mA 10 A 6.5 Ohms 1206 (3216 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .35A RESETTABLE SMD FUSE
Datasheet
20.142In Stock
30.000Expected 27/08/2026
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

nanoSMD SMD/SMT SMD/SMT 350 mA 16 VDC 750 mA 20 A 1.35 Ohms 1206 (3216 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .75A 6V 100A Imax
Datasheet
11.421In Stock
30.000Expected 19/10/2026
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

nanoSMD PCB Mount SMD/SMT 750 mA 6 VDC 1.5 A 100 A 300 mOhms 1206 (3216 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 1.5A 6V 100A Imax
Datasheet
11.642In Stock
12.000Expected 29/10/2026
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

nanoSMD SMD/SMT SMD/SMT 1.5 A 6 VDC 3 A 100 A 110 mOhms 1206 (3216 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 30Vdc 10A MINI-SMD MINI-SMD
Datasheet
15.191In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4.000

nanoSMD PCB Mount SMD/SMT 100 mA 30 VDC 350 mA 10 A 10 Ohms - 40 C + 125 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 6Vdc 10A Nano SMD 3216MM 1206IN
Datasheet
2.552In 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 .12A 15VDC 20A 0805 AEC-Q200
Datasheet
3.646In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4.000

picoASMD SMD/SMT Solder 120 mA 15 VDC 300 mA 20 A 9 Ohms 0805 (2012 metric) - 40 C + 85 C AEC-Q200 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 9V 100A 3.2Ohms
Datasheet
6.901In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4.000

picoSMD PCB Mount SMD/SMT 200 mA 9 VDC 470 mA 100 A 3.2 Ohms - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 6V 100A 1.4Ohms
Datasheet
19.301In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4.000

picoSMD PCB Mount SMD/SMT 350 mA 6 VDC 750 mA 100 A 1.4 Ohms - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .75A 30V 40A Imax
Datasheet
14.462In Stock
18.000Expected 01/09/2026
MouseReel Available
Min.: 1
Mult.: 1
: 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