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.

Results: 426
Select Image Part # Mfr. Description Datasheet Availability Pricing (DKK) 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 13.2V 2.6A-HD 100A 1812 348In Stock
Min.: 1
Mult.: 1

miniASMD PCB Mount SMD/SMT 2.6 A 13.2 VDC 5 A 1812 (4532 metric) - 40 C + 85 C
Littelfuse Resettable Fuses - PPTC 30V 500MA-HD 20A SMD 1.044In Stock
Min.: 1
Mult.: 1
Reel: 2.000

PCB Mount SMD/SMT 500 mA 30 VDC 1.6 A 20 A 1.35 Ohms - 40 C + 125 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .3A 60VDC 10A 2920 AEC-Q200 1.751In Stock
4.000Expected 17/02/2026
Min.: 1
Mult.: 1
Reel: 4.000

ASMDC PCB Mount SMD/SMT 300 mA 60 VDC 600 mA 10 A 3.4 Ohms - 40 C + 85 C AEC-Q200 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .1A 15VDC 10A 0603 AEC-Q200 1.628In Stock
Min.: 1
Mult.: 1
Reel: 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 FEMTOSMDC010F/15-2 2.185In Stock
Min.: 1
Mult.: 1
Reel: 4.000

femtoSMD SMD/SMT SMD/SMT 100 mA 15 VDC 250 mA 40 A 8 Ohms 0603 (1608 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 3 Ohms 40 A 9 VDC - 40 C+ 85 C 2.772In Stock
Min.: 1
Mult.: 1
Reel: 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 .1A 30V Micro SMD AEC-Q200 606In Stock
4.000Expected 13/04/2026
Min.: 1
Mult.: 1
Reel: 4.000

microASMD SMD/SMT SMD/SMT 100 mA 30 VDC 250 mA 10 A 15 Ohms 1210 (3225 metric) - 40 C + 85 C AEC-Q100 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .10A 30V 10A Imax 7.225In Stock
16.000Expected 23/03/2026
Min.: 1
Mult.: 1
Reel: 4.000

microSMD SMD/SMT SMD/SMT 100 mA 30 VDC 250 mA 10 A 15 Ohms 1210 (3225 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 1.1A 6V 40A Imax 3.220In Stock
4.000Expected 31/03/2026
Min.: 1
Mult.: 1
Reel: 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 4.514In Stock
Min.: 1
Mult.: 1
Reel: 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 6V 1.75A-HD 40A MAX 1.023In Stock
4.000Expected 21/04/2026
Min.: 1
Mult.: 1
Reel: 4.000

microSMD SMD/SMT SMD/SMT 1.75 A 6 VDC 3.5 A 40 A 80 mOhms 1210 (3225 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .1A 60V Mini SMD AEC-Q200 1.587In Stock
2.000Expected 17/02/2026
Min.: 1
Mult.: 1
Reel: 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 .14A 60V Mini SMD AEC-Q200 5.293In Stock
Min.: 1
Mult.: 1
Reel: 2.000

miniASMD SMD/SMT SMD/SMT 140 mA 60 VDC 280 mA 10 A 6 Ohms 1812 (4532 metric) - 40 C + 85 C AEC-Q100 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .2A 30V Mini SMD AEC-Q200 5.824In Stock
Min.: 1
Mult.: 1
Reel: 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 1.1A 16V Mini SMD AEC-Q200 1.028In Stock
Min.: 1
Mult.: 1
Reel: 2.000

miniASMD SMD/SMT SMD/SMT 1.1 A 16 VDC 2.2 A 100 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 1.779In Stock
Min.: 1
Mult.: 1
Reel: 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 679In Stock
Min.: 1
Mult.: 1
Reel: 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 381In Stock
1.000Expected 16/04/2026
Min.: 1
Mult.: 1
Reel: 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 2.478In Stock
Min.: 1
Mult.: 1
Reel: 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 1.25A 16V 100A Imax 2.401In Stock
Min.: 1
Mult.: 1
Reel: 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 2.6A 12V 100A Imax 719In Stock
47.900On Order
Min.: 1
Mult.: 1
Reel: 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 24V 750MA-HD 40A MAX 2.302In Stock
8.465Expected 30/03/2026
Min.: 1
Mult.: 1
Reel: 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 1.10A 8V 100A Imax 8.216In Stock
Min.: 1
Mult.: 1
Reel: 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 2.929In Stock
Min.: 1
Mult.: 1
Reel: 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 24V 1.5A-HD 20A MAX 4.168In Stock
14.000Expected 18/05/2026
Min.: 1
Mult.: 1
Reel: 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