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 (TWD) 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 PTC 6V .350A POLY SURF MOUNT
Datasheet
5,431In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

0603L SMD/SMT SMD/SMT 350 mA 6 VDC 750 mA 40 A 1 Ohms 0603 (1608 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 6V POLYFUSE 0603 LoRho SL 0.75A
Datasheet
4,333In Stock
4,000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 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 0603 LoRho SL 1A
Datasheet
8,020In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

Low Rho SMD/SMT SMD/SMT 1 A 6 VDC 1.8 A 50 A 120 mOhms 0603 (1608 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 6V POLYFUSE 0603 LoRho SL 1.5A
Datasheet
10,818In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

Low Rho SMD/SMT SMD/SMT 1.5 A 6 VDC 3 A 50 A 80 mOhms 0603 (1608 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel

Littelfuse Resettable Fuses - PPTC 6V 2.0A-HD 50A MAX
Datasheet
4,103In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

Low Rho SMD/SMT SMD/SMT 2 A 6 VDC 4 A 50 A 40 mOhms 0603 (1608 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 30V 50MA-HD 40A SMD
Datasheet
3,991In Stock
Min.: 1
Mult.: 1
: 4,000
0805L SMD/SMT SMD/SMT 50 mA 30 V 150 mA 40 A 20 Ohms 0805 (2012 metric) - 40 C + 85 C Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC 0.10A 15V 0805
Datasheet
3,673In Stock
8,000Expected 12/17/2026
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

0805L SMD/SMT SMD/SMT 100 mA 15 VDC 300 mA 100 A 6 Ohms 0805 (2012 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 9V 0805 .200A POLYFUSE
Datasheet
7,760In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

0805L SMD/SMT SMD/SMT 200 mA 9 VDC 500 mA 100 A 3.5 Ohms 0805 (2012 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 0.50A 6V 0805
Datasheet
3,487In Stock
3,000Expected 12/1/2026
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

0805L SMD/SMT SMD/SMT 500 mA 6 VDC 1 A 100 A 850 mOhms 0805 (2012 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 6V POLYFUSE 0805 LoRho SL 0.75A
Datasheet
2,531In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

Low Rho SMD/SMT SMD/SMT 750 mA 6 VDC 1.5 A 50 A 150 mOhms 0805 (2012 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 0805 6VDC 0.75A
Datasheet
1,664In Stock
3,000Expected 9/1/2026
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

0805L SMD/SMT SMD/SMT 750 mA 6 VDC 1.5 A 40 A 350 mOhms 0805 (2012 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 6V POLYFUSE 0805 LoRho SL 1.10A
Datasheet
9,895In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

Low Rho SMD/SMT SMD/SMT 1.1 A 6 VDC 1.8 A 50 A 120 mOhms 0805 (2012 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC PTC 12V POLYFUSE SURF MOUNT 0805 SL 1.5A
Datasheet
5,380In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

0805L PCB Mount SMD/SMT 1.5 A 12 VDC 3 A 50 A 80 mOhms - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 6V POLYFUSE 0805 LoRho SL 1.5A
Datasheet
3,644In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

Low Rho SMD/SMT SMD/SMT 1.5 A 6 VDC 3 A 50 A 65 mOhms 0805 (2012 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 6V POLYFUSE 0805 LoRho SL 2.00A
Datasheet
8,262In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

Low Rho PCB Mount SMD/SMT 2 A 6 VDC 4 A 50 A 45 mOhms 0805 (2012 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 60V 50MA-HD 10A SMD
Datasheet
5,207In Stock
Min.: 1
Mult.: 1
: 3,000

1206L PCB Mount SMD/SMT 50 mA 60 VDC 150 mA 10 A 20 Ohms 1206 (3216 metric) - 40 C + 85 C Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC 60V 100MA-HD 10A SMD
Datasheet
50,872In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

1206L SMD/SMT SMD/SMT 100 mA 60 VDC 250 mA 10 A 10 Ohms 1206 (3216 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 60V 3.5A-HD 10A SMD
Datasheet
3,404In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

1206L PCB Mount SMD/SMT 100 mA 60 VDC 250 mA 10 A 10 Ohms - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 30V 1206 .160A POLYFUSE
Datasheet
35,597In Stock
51,000Expected 12/1/2026
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

1206L SMD/SMT SMD/SMT 160 mA 30 VDC 370 mA 100 A 4.5 Ohms 1206 (3216 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 24 V .2A .05s
Datasheet
18,139In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

1206L SMD/SMT SMD/SMT 200 mA 24 VDC 420 mA 100 A 2.6 Ohms 1206 (3216 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 16V .25A 1206 POLYFUSE
Datasheet
18,036In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

1206L PCB Mount SMD/SMT 250 mA 16 VDC 500 mA 100 A 2.3 Ohms 1206 (3216 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC PTC 16V 1206 .350A POLY SURF MOUNT
Datasheet
13,297In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

1206L SMD/SMT SMD/SMT 350 mA 16 VDC 750 mA 100 A 1.2 Ohms 1206 (3216 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 30V 350MA-HD 100A SMD
Datasheet
16,030In Stock
33,000Expected 9/3/2026
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

1206L PCB Mount SMD/SMT 350 mA 30 VDC 750 mA 100 A 1.2 Ohms 1206 (3216 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 1206 PTC 6V 500MA
Datasheet
16,830In Stock
28,000Expected 12/17/2026
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

1206L SMD/SMT SMD/SMT 500 mA 6 VDC 1 A 100 A 700 mOhms 1206 (3216 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC PTC 13.2V POLY 1206 HALOGEN-FREE .75
Datasheet
9,265In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

1206L SMD/SMT SMD/SMT 750 mA 13.2 VDC 1.5 A 100 A 350 mOhms 1206 (3216 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel