1812L POLY-FUSE® PTC Resettable Fuses

Littelfuse 1812L POLY-FUSE® PTC Resettable Fuses provide overcurrent protection for applications where resettable protection is desired. The compact fuses offer fast response time to fault currents and feature low resistance. Littelfuse 1812L POLY-FUSE PTC Resettable Fuses applications include plug-and-play protection for motherboards and peripherals, USB peripherals, PCI cards, and game console port protection.

Results: 33
Select Image Part #
 Mfr.
Description Datasheet Availability Pricing (CHF) 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
Packaging
Littelfuse Resettable Fuses - PPTC 12V 1812 1.50A POLYFUSE
Datasheet
5’626In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1’500

1812L SMD/SMT SMD/SMT 1.5 A 12 VDC 3 A 100 A 110 mOhms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 60V 0.20A 1812 PTC POLY SMT
Datasheet
3’752In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1’500

1812L SMD/SMT SMD/SMT 200 mA 60 VDC 400 mA 40 A 4.4 Ohms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC PTC 30V POLY 1812 HALOGEN-FREE .35A
Datasheet
20’265In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1’500

1812L SMD/SMT SMD/SMT 350 mA 30 VDC 750 mA 40 A 1.7 Ohms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC PTC 33V 1.10A POLY SURF MOUNT
Datasheet
103’055In Stock
104’000Expected 11/16/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1’000

1812L PCB Mount SMD/SMT 1.1 A 33 VDC 1.95 A 20 A 200 mOhms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 60V 0.10A 1812 PTC POLY SMT
Datasheet
1’955In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1’500

1812L PCB Mount SMD/SMT 100 mA 60 VDC 300 mA 10 A 15 Ohms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 0.14A 60V 1812
Datasheet
16’006In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1’500

1812L SMD/SMT SMD/SMT 140 mA 60 VDC 340 mA 10 A 6 Ohms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 30V 1812 .200A POLYFUSE
Datasheet
9’858In Stock
14’000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 2’000

1812L PCB Mount SMD/SMT 200 mA 30 V 400 mA 100 A 5 Ohms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 60V 350MA-HD 10A SMD
Datasheet
820In Stock
16’000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 1’000

1812L PCB Mount SMD/SMT 350 mA 60 VDC 700 mA 10 A 1.7 Ohms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC PTC 30V POLY SURF MOUNT 1812 .500A
Datasheet
6’048In Stock
22’000Expected 12/1/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2’000

1812L SMD/SMT SMD/SMT 500 mA 30 VDC 1 A 100 A 1 Ohms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 60V 500MA-HD 100A SMD
Datasheet
23’299In Stock
14’000Expected 11/17/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1’000

1812L PCB Mount SMD/SMT 500 mA 60 VDC 1 A 10 A 1 Ohms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 24V 1812 .750A POLYFUSE
Datasheet
4’789In Stock
13’500Expected 11/4/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1’500

1812L SMD/SMT SMD/SMT 750 mA 24 VDC 1.5 A 100 A 290 mOhms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 33V 1812 .750A POLYFUSE
Datasheet
46’065In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1’500

1812L PCB Mount SMD/SMT 750 mA 33 VDC 1.5 A 20 A 400 mOhms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 16V 1812 1.10A POLYFUSE
Datasheet
23’005In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1’500

1812L PCB Mount SMD/SMT 1.1 A 16 VDC 1.95 A 100 A 180 mOhms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 24V 1.5A-HD 40A MAX
Datasheet
4’584In Stock
13’000Expected 11/24/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1’000

1812L PCB Mount SMD/SMT 1.5 A 24 VDC 3 A 20 A 120 mOhms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 12V 1812 PTC POLY SMT
Datasheet
2’819In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1’500

1812L SMD/SMT SMD/SMT 2 A 12 VDC 3.5 A 100 A 70 mOhms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 16V 2.00A 1812 PTC POLY SMT
Datasheet
23’871In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1’500

1812L PCB Mount SMD/SMT 2 A 16 VDC 3.5 A 100 A 70 mOhms - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC PTC 12V POLY SURF MOUNT 1812 2.6A
Datasheet
3’059In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1’000

1812L SMD/SMT SMD/SMT 2.6 A 12 VDC 5 A 100 A 55 mOhms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC PTC 8V 1812 2.6A 8V 1812 2.6A
Datasheet
7’182In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1’500

1812L PCB Mount SMD/SMT 2.6 A 8 VDC 5.2 A 100 A 47 mOhms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel


Littelfuse Resettable Fuses - PPTC 60V 500MA-HD 100A SMD
Datasheet
1’225In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1’000

1812L SMD/SMT SMD/SMT 500 mA 60 VDC 1 A 10 A 1 Ohms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 1812 15V .5A
Datasheet
1’413In Stock
8’000Expected 10/27/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2’000

1812L SMD/SMT SMD/SMT 500 mA 15 VDC 1 A 100 A 1 Ohms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 1812 13.2V 0.75A
Datasheet
4’326In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2’000

1812L SMD/SMT SMD/SMT 750 mA 13.2 VDC 1.5 A 100 A 450 mOhms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC PTC 24V POLY 1812 HALOGEN-FREE 1.10A
Datasheet
4In Stock
9’000Expected 10/22/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1’500

1812L PCB Mount SMD/SMT 1.1 A 24 VDC 1.95 A 20 A 200 mOhms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 1812 8V 1.1A
Datasheet
5’913In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2’000

1812L 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 PTC 16V POLY 1812 HALOGEN-FREE 1.25A
Datasheet
2’694In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1’500

1812L 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 16V 1.50A 1812 PTC Poly Halo-Free
Datasheet
1’995In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1’500

1812L SMD/SMT SMD/SMT 1.5 A 16 VDC 2.8 A 100 A 110 mOhms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel