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 (IDR) 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 1.1A 15V 40A Imax 3.450In Stock
4.000Expected 15/12/2026
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 1.1A 33V 40A Imax 2.807In Stock
10.000Expected 08/10/2026
Min.: 1
Mult.: 1
: 2.000

SMD SMD/SMT SMD/SMT 1.1 A 33 VDC 2.2 A 40 A 410 mOhms 2920 (7450 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 1.25A 15V 40A Imax 2.153In Stock
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 882In Stock
12.000On Order
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 230 mOhms 40 A 33 VDC - 40 C+ 85 C 2.838In Stock
Min.: 1
Mult.: 1
: 2.000

SMD SMD/SMT SMD/SMT 1.5 A 33 VDC 3 A 40 A 230 mOhms 2920 (7450 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 2A 6V 40A Imax 891In Stock
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 4.670In Stock
8.000Expected 14/09/2026
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 2.095In Stock
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 3.631In Stock
8.000Expected 11/11/2026
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 117In Stock
4.000Expected 22/09/2026
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 2.064In Stock
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 1.285In Stock
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 1.215In Stock
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
19.063Expected 22/10/2026
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
88.465On Order
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 33V 2.6A-HD 40A MAX
61.494On Order
Min.: 1
Mult.: 1
: 1.500

2920L SMD/SMT SMD/SMT 2.6 A 33 VDC 5 A 40 A 75 mOhms 2920 (7450 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 24V 3.3A Poly 2920 PTC
24.000Expected 15/10/2026
Min.: 1
Mult.: 1
: 1.000

2920L SMD/SMT SMD/SMT 3.3 A 24 VDC 5.5 A 40 A 55 mOhms 2920 (7450 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC PTC 6V POLY 0603 0.5A
11.906Expected 01/09/2026
Min.: 1
Mult.: 1
: 4.000

0603L PCB Mount SMD/SMT 500 mA 6 VDC 1 A 40 A 680 mOhms - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 0.10A 24V 0805
7.797Expected 01/09/2026
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 6V 3.0A-HD 50A SMD
6.502Expected 01/09/2026
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
51.602On Order
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 12V 3.0A-HD 50A SMD
3.996Expected 14/10/2026
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
44.704Expected 20/10/2026
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
5.968Expected 03/09/2026
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
3.000Expected 14/10/2026
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