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 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
Littelfuse Resettable Fuses - PPTC 1.1A 15V 40A Imax
Datasheet
3.450In Stock
4.000Expected 12/15/2026
MouseReel Available
Min.: 1
Mult.: 1
: 4.000

midSMD SMD/SMT SMD/SMT 1.1 A 15 VDC 2.2 A 40 A 400 mOhms 2018 (5045 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 1.25A 15V 40A Imax
Datasheet
2.158In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.000

SMD SMD/SMT SMD/SMT 1.25 A 15 VDC 2.5 A 40 A 250 mOhms 2920 (7450 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 1.5A 15V 40A Imax
Datasheet
882In Stock
12.000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 1.500

SMD SMD/SMT SMD/SMT 1.5 A 15 VDC 3 A 40 A 250 mOhms 3425 (8764 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 2A 6V 40A Imax
Datasheet
891In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4.000

midSMD PCB Mount SMD/SMT 2018 (5050 metric) + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 125 mOhms 40 A 24 VDC - 40 C+ 85 C
Datasheet
4.670In Stock
8.000Expected 9/14/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2.000

SMD SMD/SMT SMD/SMT 2 A 24 VDC 4 A 40 A 125 mOhms 2920 (7450 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 15V 2.5A-HD 40A SMD
Datasheet
2.095In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.000

SMD SMD/SMT SMD/SMT 2.5 A 15 VDC 5 A 40 A 85 mOhms 3425 (8764 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 15V 40A 0.05Ohms
Datasheet
4.056In Stock
8.000Expected 11/11/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2.000

SMD SMD/SMT SMD/SMT 3 A 15 VDC 6 A 40 A 50 mOhms 2920 (7450 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC SMDC075F-2
Datasheet
182In Stock
4.000Expected 9/22/2026
MouseReel Available
Min.: 1
Mult.: 1
: 4.000

SMDC PCB Mount SMD/SMT 2920 (7351 metric) + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 1.2A 16V 50A Imax
Datasheet
2.264In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.000

SMD SMD/SMT SMD/SMT 1.2 A 16 VDC 2.3 A 50 A 340 mOhms 2920 (7450 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 1.6A 16V 40A Imax
Datasheet
Product Comments
1.285In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1.500

SMD SMD/SMT SMD/SMT 1.6 A 16 VDC 3.2 A 70 A 150 mOhms 3425 (8764 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 6V POLYFUSE 1812 LoRho SL 3.5A
Datasheet
1.215In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.000

Low Rho PCB Mount SMD/SMT 3.5 A 6 VDC 8.1 A 50 A 20 mOhms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 36V 30MA-HD 40A SMD
Datasheet
19.063Expected 10/22/2026
MouseReel Available
Min.: 1
Mult.: 1
: 4.000

0603L SMD/SMT SMD/SMT 30 mA 36 VDC 90 mA 40 A 50 Ohms 0603 (1608 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 1.85A 33V 2920
Datasheet
88.340On Order
MouseReel Available
Min.: 1
Mult.: 1
: 1.500

2920L SMD/SMT SMD/SMT 1.85 A 33 VDC 3.7 A 40 A 150 mOhms 2920 (7450 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 0.10A 24V 0805
Datasheet
7.797Expected 10/1/2026
MouseReel Available
Min.: 1
Mult.: 1
: 4.000

0805L SMD/SMT SMD/SMT 100 mA 24 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
7.988Expected 8/21/2026
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 6V 3.0A-HD 50A SMD
Datasheet
6.502Expected 10/1/2026
MouseReel Available
Min.: 1
Mult.: 1
: 4.000

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 15V 1206 .500A POLYFUSE
Datasheet
51.777On Order
MouseReel Available
Min.: 1
Mult.: 1
: 4.000

1206L SMD/SMT SMD/SMT 500 mA 15 VDC 1 A 100 A 750 mOhms 1206 (3216 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 6V POLYFUSE 1206 LoRho SL 1.75A
Datasheet
10.234Expected 8/28/2026
MouseReel Available
Min.: 1
Mult.: 1
: 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 12V 3.0A-HD 50A SMD
Datasheet
3.996Expected 10/14/2026
MouseReel Available
Min.: 1
Mult.: 1
: 4.000

Low Rho SMD/SMT SMD/SMT 3 A 12 VDC 6 A 50 A 30 mOhms 1206 (3216 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 0.05A 30V 1210
Datasheet
44.704Expected 10/20/2026
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

1210L PCB Mount SMD/SMT 50 mA 30 V 150 mA 10 A 50 Ohms 1210 (3225 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 6V POLYFUSE 1210 LoRho SL 4A
Datasheet
5.968Expected 9/30/2026
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

Low Rho SMD/SMT SMD/SMT 4 A 6 VDC 8 A 50 A 14 mOhms 1210 (3225 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel

Littelfuse Resettable Fuses - PPTC 6V 6.0A-HD 50A SMD
Datasheet
3.000Expected 10/14/2026
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

Low Rho SMD/SMT SMD/SMT 6 A 6 VDC 12 A 50 A 10 mOhms 1210 (3225 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel