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.

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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 16V 100A 2.3Ohms
Datasheet
9,650In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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
16,757In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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
25,183In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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 1.1A 6V 100A Imax
Datasheet
7,882In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

nanoSMD SMD/SMT SMD/SMT 1.1 A 6 VDC 2.2 A 100 A 200 mOhms 1206 (3216 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 1.5A 6V 100A Imax
Datasheet
7,813In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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 .12A 15VDC 20A 0805 AEC-Q200
Datasheet
4,726In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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 16V 100MA-HD 40A SMD
Datasheet
10,265In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 4,000

ASMDC SMD/SMT SMD/SMT 100 mA 16 VDC 600 mA 40 A 1 Ohms 0805 (2012 metric) - 40 C + 125 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 9V 100A 3.2Ohms
Datasheet
11,224In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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
11,842In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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 SMDC125F/33-2
Datasheet
11,748In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 4,000

SMDC PCB Mount SMD/SMT 1.25 A 33 VDC 2.5 A 40 A 250 mOhms - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 6V POLYFUSE 0402 LoRho SL .350A
Datasheet
9,739In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 10,000

Low Rho SMD/SMT SMD/SMT 350 mA 6 VDC 700 mA 40 A 700 mOhms 0402 (1005 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 6V POLYFUSE 0603 LoRho SL 0.75A
Datasheet
3,175In Stock
4,000Expected 16/03/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 4,000

Low Rho SMD/SMT SMD/SMT 750 mA 6 VDC 1.5 A 50 A 165 mOhms 0603 (1608 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 6V POLYFUSE 0805 LoRho SL 3.00A
Datasheet
3,418In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

Low Rho SMD/SMT SMD/SMT 3 A 6 VDC 6 A 50 A 30 mOhms 0805 (2012 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 12V POLYFUSE 1206 LoRho SL 1.1A
Datasheet
3,269In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 4,000

Low Rho SMD/SMT SMD/SMT 1.1 A 12 VDC 2.2 A 50 A 130 mOhms 1206 (3216 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 6V POLYFUSE 1206 LoRho SL 1.10A
Datasheet
3,660In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 4,000

Low Rho SMD/SMT SMD/SMT 1.1 A 6 VDC 2.2 A 50 A 100 mOhms 1206 (3216 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 6V POLYFUSE 1206 LoRho SL 1.75A
Datasheet
7,222In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 4,000

Low Rho SMD/SMT SMD/SMT 1.75 A 6 VDC 3.5 A 50 A 30 mOhms 1206 (3216 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 6V POLYFUSE 1206 LoRho SL 2.6A
Datasheet
7,534In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 4,000

Low Rho SMD/SMT SMD/SMT 2.6 A 6 VDC 5 A 50 A 26 mOhms 1206 (3216 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 6V POLYFUSE 1206 LoRho SL 3.80A
Datasheet
3,250In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 4,000

Low Rho SMD/SMT SMD/SMT 2.82 A 6 VDC 8 A 50 A 14 mOhms 1206 (3216 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel

Littelfuse Resettable Fuses - PPTC 6V 5.0A-HD 50A MAX
Datasheet
4,462In Stock
6,000Expected 27/04/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

Low Rho SMD/SMT SMD/SMT 5 A 6 VDC 10 A 50 A 12 mOhms 1206 (3216 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 6V 3.0A 1210 PTC SL
Datasheet
14,407In Stock
Min.: 1
Mult.: 1
Reel: 3,000

Low Rho PCB Mount SMD/SMT 3 A 6 VDC 6 A 50 A 20 mOhms 1210 (3225 metric) - 40 C + 85 C Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC 6V POLYFUSE 1210 LoRho SL 3.5A
Datasheet
4,042In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

Low Rho SMD/SMT SMD/SMT 3.5 A 6 VDC 7 A 50 A 18 mOhms 1210 (3225 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel

Littelfuse Resettable Fuses - PPTC 24V 3.0A-HD 50A SMD
Datasheet
4,956In Stock
5,000Expected 16/03/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

Low Rho SMD/SMT SMD/SMT 3 A 24 VDC 6 A 50 A 30 mOhms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel

Littelfuse Resettable Fuses - PPTC 24V 6.0A-HD 100A MAX
Datasheet
5,659In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

Low Rho SMD/SMT SMD/SMT 6 A 24 VDC 12 A 50 A 12 mOhms 2920 (7450 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .6A 30V SMD AEC-Q200
Datasheet
4,617In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,000

ASMD SMD/SMT SMD/SMT 600 mA 30 VDC 1.48 A 40 A 1 Ohms 2920 (7450 metric) - 40 C + 85 C AEC-Q100 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .14A 60V 10A Imax
Datasheet
59,453In Stock
21,900On Order
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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