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 (USD) 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 60V 0.20A 1812 PTC POLY SMT 3,572In Stock
Cut Tape
$0.80
$0.791
Reel
$0.791
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 12V 1812 1.50A POLYFUSE 5,556In Stock
Cut Tape
$0.52
$0.472
$0.429
$0.374
Reel
$0.242
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 PTC 30V POLY 1812 HALOGEN-FREE .35A 19,675In Stock
Cut Tape
$1.92
$1.78
$1.47
$1.35
Reel
$0.942
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 92,394In Stock
104,000Expected 08/12/2026
Cut Tape
$0.62
$0.549
$0.469
$0.413
Reel
$0.284
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 1,921In Stock
Cut Tape
$1.92
$1.48
$1.24
$1.20
Reel
$0.942
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 15,994In Stock
Cut Tape
$0.54
$0.491
$0.408
$0.374
Reel
$0.235
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 21,401In Stock
Cut Tape
$0.54
$0.49
$0.408
$0.374
Reel
$0.23
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 4,031In Stock
12,670Expected 26/10/2026
Cut Tape
$1.02
$0.935
$0.743
$0.707
Reel
$0.496
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 60V 500MA-HD 100A SMD 19,640In Stock
14,000Expected 17/11/2026
Cut Tape
$1.02
$0.935
$0.776
$0.716
Reel
$0.468
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 33V 1812 .750A POLYFUSE 40,454In Stock
Cut Tape
$0.68
$0.622
$0.517
$0.477
Reel
$0.299
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 22,575In Stock
Cut Tape
$0.62
$0.565
$0.469
$0.433
Reel
$0.27
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 12V 1812 PTC POLY SMT 2,811In Stock
Cut Tape
$1.92
$1.75
$1.47
$1.33
Reel
$0.942
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 18,534In Stock
Cut Tape
$1.03
$0.95
$0.789
$0.728
Reel
$0.475
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 3,042In Stock
Cut Tape
$1.03
$0.908
$0.736
$0.704
Reel
$0.476
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 7,182In Stock
Cut Tape
$0.60
$0.547
$0.458
$0.409
Reel
$0.264
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 PTC 30V POLY SURF MOUNT 1812 .500A 2,526In Stock
22,000Expected 01/12/2026
Cut Tape
$1.03
$0.95
$0.789
$0.728
Reel
$0.475
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 956In Stock
2,000Expected 06/10/2026
Cut Tape
$1.79
$1.65
$1.37
$1.27
Reel
$0.875
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 24V 1812 .750A POLYFUSE 4,283In Stock
13,500Expected 08/10/2026
Cut Tape
$0.68
$0.622
$0.517
$0.477
Reel
$0.315
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 1812 13.2V 0.75A 3,027In Stock
8,000Expected 08/12/2026
Cut Tape
$0.55
$0.507
$0.421
$0.388
Reel
$0.256
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 1812 8V 1.1A 4,513In Stock
8,000Expected 27/01/2027
Cut Tape
$0.46
$0.42
$0.348
$0.322
Reel
$0.215
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 2,669In Stock
Cut Tape
$0.56
$0.482
$0.427
$0.364
Reel
$0.245
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 PTC 6V 1812 1.25A POLY SURF MOUNT 3,406In Stock
4,000Expected 30/12/2026
Cut Tape
$0.65
$0.599
$0.498
$0.454
Reel
$0.313
Min.: 1
Mult.: 1
: 2,000
1812L PCB Mount SMD/SMT 1.25 A 6 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 266In Stock
3,000Expected 08/12/2026
Cut Tape
$0.62
$0.551
$0.469
$0.433
Reel
$0.27
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
Littelfuse Resettable Fuses - PPTC 24V 1.5A-HD 40A MAX 676In Stock
13,000Expected 24/11/2026
Cut Tape
$0.68
$0.622
$0.519
$0.475
Reel
$0.332
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 8V 1.5A 4,910In Stock
Cut Tape
$0.55
$0.461
$0.421
$0.383
Reel
$0.239
Min.: 1
Mult.: 1
: 2,000
1812L SMD/SMT SMD/SMT 1.5 A 8 VDC 3 A 100 A 110 mOhms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel