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 1.1A 24V Mini SMD AEC-Q200
Datasheet
1.414In Stock
1.500Expected 11/2/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1.500

miniASMD SMD/SMT SMD/SMT 1.1 A 24 VDC 2.2 A 20 A 180 mOhms 1812 (4532 metric) - 40 C + 85 C AEC-Q100 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 1.25A 16V Mini SMD AEC-Q200
Datasheet
1.734In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.000

miniASMD SMD/SMT SMD/SMT 1.25 A 16 VDC 2.5 A 100 A 140 mOhms 1812 (4532 metric) - 40 C + 85 C AEC-Q100 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 1.5A 16V Mini SMD AEC-Q200
Datasheet
2.453In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.000

miniASMD SMD/SMT SMD/SMT 1.5 A 16 VDC 2.8 A 100 A 110 mOhms 1812 (4532 metric) - 40 C + 85 C AEC-Q100 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 1.5A 24V Mini SMD AEC-Q200
Datasheet
2.102In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

miniASMD SMD/SMT SMD/SMT 1.5 A 24 VDC 3 A 20 A 120 mOhms 1812 (4532 metric) - 40 C + 85 C AEC-Q100 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 2.6A 16V Mini SMD AEC-Q200
Datasheet
3.217In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1.500

miniASMD SMD/SMT SMD/SMT 2.6 A 16 VDC 5 A 100 A 50 mOhms 1812 (4532 metric) - 40 C + 85 C AEC-Q100 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 1.10A 16V 100A Imax
Datasheet
4.953In Stock
12.000Expected 9/29/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2.000

miniSMD PCB Mount SMD/SMT 1812 (4532 metric) + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 1.25A 16V 100A Imax
Datasheet
467In Stock
6.000Expected 8/27/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2.000

miniSMD SMD/SMT SMD/SMT 1.25 A 16 VDC 2.5 A 100 A 140 mOhms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 1.10A 8V 100A Imax
Datasheet
4.645In Stock
14.000Expected 10/6/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2.000

miniSMD SMD/SMT SMD/SMT 1.1 A 8 VDC 2.2 A 100 A 210 mOhms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 1.25A 6V 100A Imax
Datasheet
6.167In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.000

miniSMD SMD/SMT SMD/SMT 1.25 A 6 VDC 2.5 A 100 A 140 mOhms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 16V 100A 0.11Ohms
Datasheet
4.783In Stock
12.000Expected 9/3/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2.000

miniSMD SMD/SMT SMD/SMT 1.5 A 16 VDC 2.8 A 100 A 110 mOhms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 1.6A 9V 100A Imax
Datasheet
3.667In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.000

miniSMD SMD/SMT SMD/SMT 1.6 A 9 VDC 3.2 A 100 A 100 mOhms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 85 mOhms 40 A 16 VDC - 40 C+ 85 C
Datasheet
2.754In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.000

miniSMD PCB Mount SMD/SMT 2 A 16 VDC 4 A 40 A 85 mOhms - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 2.6A 6V 100A Imax
Datasheet
1.608In Stock
2.000Expected 8/27/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2.000

miniSMD SMD/SMT SMD/SMT 2.6 A 6 VDC 5 A 100 A 43 mOhms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 2.60A 13.2V 100A Imax
Datasheet
3.649In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1.500

miniSMD SMD/SMT SMD/SMT 2.6 A 13.2 VDC 5 A 100 A 50 mOhms 1812 (4532 metric) - 40 C + 85 C 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 .16A 48V Nano SMD AEC-Q200
Datasheet
3.306In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

nanoASMDC SMD/SMT SMD/SMT 160 mA 48 VDC 450 mA 10 A 5 Ohms 1206 (3216 metric) - 40 C + 85 C AEC-Q200 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .2A 24V Nano SMD AEC-Q200
Datasheet
221In Stock
6.000Expected 10/26/2026
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

nanoASMDC SMD/SMT SMD/SMT 200 mA 24 VDC 420 mA 100 A 3.1 Ohms 1206 (3216 metric) - 40 C + 85 C AEC-Q100 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 50A 16V PolySwitch Overcurrent Protect
Datasheet
1.789In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

nanoASMDCH SMD/SMT SMD/SMT 350 mA 16 VDC 950 mA 50 A 200 mOhms 1206 (3216 metric) - 40 C + 125 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .2A 24V 100A Imax
Datasheet
5.614In Stock
15.000Expected 10/19/2026
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

nanoSMD SMD/SMT SMD/SMT 200 mA 24 VDC 420 mA 100 A 3.1 Ohms 1206 (3216 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 16V 100A 2.3Ohms
Datasheet
4.929In Stock
9.000Expected 8/27/2026
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

nanoSMD PCB Mount SMD/SMT 250 mA 16 VDC 580 mA 100 A 2.3 Ohms - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .35A RESETTABLE SMD FUSE
Datasheet
20.142In Stock
30.000Expected 8/27/2026
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 6V 100A 0.072Ohms
Datasheet
229In Stock
6.000Expected 10/19/2026
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

nanoSMD SMD/SMT SMD/SMT 2 A 6 VDC 4 A 100 A 72 mOhms 1206 (3216 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 15V 100mA 11Ohms
Datasheet
3.318In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

picoSMD PCB Mount SMD/SMT 100 mA 15 VDC 300 mA 100 A 11 Ohms - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 6V 100A 0.8Ohms
Datasheet
4.165In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

picoSMD PCB Mount SMD/SMT 500 mA 6 VDC 1 A 100 A 800 mOhms - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .3A 60V 20A Imax
Datasheet
2.839In Stock
4.000Expected 10/7/2026
MouseReel Available
Min.: 1
Mult.: 1
: 4.000

midSMD SMD/SMT SMD/SMT 300 mA 60 VDC 800 mA 20 A 2.3 Ohms 2018 (5045 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel