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.

Results: 405
Select Image Part # Mfr. Description Datasheet Availability Pricing (INR) 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 .75A 33VDC 40A 2920 AEC-Q200 5,033In Stock
Min.: 1
Mult.: 1
: 4,000

ASMDC PCB Mount SMD/SMT 750 mA 33 VDC 1.5 A 40 A 610 mOhms - 40 C + 85 C AEC-Q200 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 1.25A 33VDC 40A 2920 AEC-Q200 5,373In Stock
Min.: 1
Mult.: 1
: 4,000

ASMDC PCB Mount SMD/SMT 1.25 A 33 VDC 2.5 A 40 A 250 mOhms - 40 C + 85 C AEC-Q200 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 1.85A 33VDC 40A 2920 AEC-Q200 7,797In Stock
Min.: 1
Mult.: 1
: 4,000

ASMDC SMD/SMT SMD/SMT 1.85 A 33 VDC 3.7 A 40 A 150 mOhms 2920 (7450 metric) - 40 C + 85 C AEC-Q200 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 3A 24VDC 40A 2920 AEC-Q200 3,411In Stock
Min.: 1
Mult.: 1
: 4,000

ASMDC PCB Mount SMD/SMT 3 A 24 VDC 6 A 40 A 72 mOhms - 40 C + 85 C AEC-Q200 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .55A 60V 10A Imax 7,070In Stock
14,000Expected 03-12-2026
Min.: 1
Mult.: 1
: 1,000

decaSMD SMD/SMT SMD/SMT 550 mA 60 VDC 1.1 A 10 A 1.1 Ohms 2018 (5045 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .1A 15VDC 10A 0603 AEC-Q200 3,389In Stock
Min.: 1
Mult.: 1
: 4,000

femtoASMD PCB Mount SMD/SMT 100 mA 15 VDC 300 mA 10 A 14 Ohms - 40 C + 85 C AEC-Q200 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .08A 12VDC 10A 0603 AEC-Q200 6,806In Stock
Min.: 1
Mult.: 1
: 4,000

femtoASMD PCB Mount SMD/SMT 80 mA 12 VDC 200 mA 10 A 14 Ohms - 40 C + 85 C AEC-Q200 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 15V 50MA-HD 40A MAX 11,341In Stock
Min.: 1
Mult.: 1
: 4,000

femtoSMD PCB Mount SMD/SMT 50 mA 15 VDC 150 mA 40 A 30 Ohms - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 14 Ohms 40 A 12 VDC - 40 C+ 85 C 4,190In Stock
Min.: 1
Mult.: 1
: 4,000

femtoSMD + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 12V 100MA-HD 40A 0603 6,200In Stock
Min.: 1
Mult.: 1
: 4,000

femtoSMD PCB Mount SMD/SMT 100 mA 12 VDC 250 mA 40 A 8 Ohms - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .05A 30V 10A IMAX 46,367In Stock
Min.: 1
Mult.: 1
: 4,000

microSMD SMD/SMT SMD/SMT 50 mA 30 VDC 150 mA 10 A 50 Ohms 1210 (3225 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .35A 6V 40A Imax 7,243In Stock
Min.: 1
Mult.: 1
: 4,000

microSMD SMD/SMT SMD/SMT 350 mA 6 VDC 750 mA 40 A 1.3 Ohms 1210 (3225 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .75A 6V 40A Imax 5,976In Stock
Min.: 1
Mult.: 1
: 4,000

microSMD PCB Mount SMD/SMT 750 mA 6 VDC 1.5 A 40 A 400 mOhms - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 1.1A 6V 40A Imax 10,217In Stock
Min.: 1
Mult.: 1
: 4,000

microSMD SMD/SMT SMD/SMT 1.1 A 6 VDC 2.2 A 40 A 210 mOhms 1210 (3225 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 1.5A 6V 40A Imax 6,874In Stock
Min.: 1
Mult.: 1
: 4,000

microSMD SMD/SMT SMD/SMT 1.5 A 6 VDC 3 A 40 A 110 mOhms 1210 (3225 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC Polyswitch 4.2A 4,723In Stock
Min.: 1
Mult.: 1
: 3,000

microSMD SMD/SMT SMD/SMT 2 A 6 VDC 5 A 100 A 60 mOhms 1210 (3225 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 30Vdc 10A MINI-SMD 5,953In Stock
Min.: 1
Mult.: 1
: 3,000

microSMD PCB Mount SMD/SMT 100 mA 30 VDC 350 mA 10 A 11 Ohms - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .1A 60V Mini SMD AEC-Q200 10,211In Stock
Min.: 1
Mult.: 1
: 2,000

miniASMD SMD/SMT SMD/SMT 100 mA 60 VDC 300 mA 40 A 12.7 Ohms 1812 (4532 metric) - 40 C + 85 C AEC-Q100 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 1.25A 16V 100A Imax 6,467In Stock
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 1.5A 12V 100A Imax 40,399In Stock
Min.: 1
Mult.: 1
: 2,000

miniSMD SMD/SMT SMD/SMT 1.5 A 12 VDC 2.8 A 100 A 110 mOhms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 2.6A 12V 100A Imax 39,897In Stock
39,000Expected 19-10-2026
Min.: 1
Mult.: 1
: 1,500

miniSMD SMD/SMT SMD/SMT 2.6 A 12 VDC 5 A 100 A 47 mOhms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .14A 60V 10A Imax 58,485In Stock
78,000Expected 06-10-2026
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 19,148In Stock
31,800Expected 02-09-2026
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 16,275In Stock
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 35,495In Stock
86,000Expected 13-10-2026
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