PTC Fuses for AC/DC Power Supplies

A Positive Thermal Coefficient fuse, or PTC thermistor, is a thermally sensitive semiconductor resistor that increases in resistance as temperature increases to limit current to a load. When the voltage input for a power supply is too far above or below what is specified, the excess current can damage components. Besides shutting down the power supply altogether, one can effectively limit the current by using the predictable resistive response of a PTC.

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Results: 122
Select Image Part # Mfr. 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 Lead Spacing Qualification Packaging
Littelfuse Resettable Fuses - PPTC 0.30A 60V 2920 13.582In Stock
19.500Expected 2/9/2027
Cut Tape
0,611 €
0,556 €
0,463 €
0,40 €
Reel
0,272 €
Min.: 1
Mult.: 1
: 1.500
2920L SMD/SMT SMD/SMT 300 mA 60 VDC 600 mA 10 A 4.8 Ohms 2920 (7450 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 24V 2920 2A POLYFUSE 5.860In Stock
6.000Expected 12/24/2026
Cut Tape
0,774 €
0,715 €
0,593 €
0,548 €
Reel
0,426 €
Min.: 1
Mult.: 1
: 1.500
2920L 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 PTC 15V 2920 3A 16.448In Stock
Cut Tape
0,774 €
0,715 €
0,593 €
0,548 €
Reel
0,426 €
Min.: 1
Mult.: 1
: 1.500
2920L SMD/SMT SMD/SMT 3 A 15 VDC 5 A 40 A 48 mOhms 2920 (7450 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 1.35A 60V RADIAL 6.294In Stock
0,877 €
0,805 €
0,647 €
0,569 €
Min.: 1
Mult.: 1
60R PCB Mount Radial 1.35 A 60 VDC 2.7 A 40 A 300 mOhms - 40 C + 85 C 5.1 mm Bulk
Littelfuse Resettable Fuses - PPTC 10A 32V High Temp AEC-Q200 3.376In Stock
1,58 €
1,45 €
1,21 €
1,12 €
Min.: 1
Mult.: 1
AHEF PCB Mount Radial 10 A 32 VDC 20 A 100 A 16 mOhms - 40 C + 85 C 10.9 mm AEC-Q100 Bulk
Littelfuse Resettable Fuses - PPTC .16A 240VAC 20/2A Imax 7.336In Stock
0,585 €
0,535 €
0,445 €
0,41 €
Min.: 1
Mult.: 1
LVR PCB Mount Radial 160 mA 120 VAC/VDC 370 mA 20 A 7.8 Ohms - 40 C + 85 C 5.8 mm Bulk
Littelfuse Resettable Fuses - PPTC .1A 30V Micro SMD AEC-Q200 12.192In Stock
Cut Tape
0,559 €
0,511 €
0,426 €
0,384 €
Reel
0,23 €
Min.: 1
Mult.: 1
: 4.000
microASMD SMD/SMT SMD/SMT 100 mA 30 VDC 250 mA 10 A 15 Ohms 1210 (3225 metric) - 40 C + 85 C AEC-Q100 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .5A 24V Mini SMD AEC-Q200 10.063In Stock
Cut Tape
0,482 €
0,442 €
0,367 €
0,339 €
Reel
0,204 €
Min.: 1
Mult.: 1
: 2.000
miniASMD SMD/SMT SMD/SMT 500 mA 24 VDC 1 A 100 A 1 Ohms 1812 (4532 metric) - 40 C + 85 C AEC-Q100 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 1.10A 16V 100A Imax 9.312In Stock
Cut Tape
0,499 €
0,43 €
0,378 €
0,349 €
Reel
0,254 €
Min.: 1
Mult.: 1
: 2.000
miniSMD PCB Mount SMD/SMT 1812 (4532 metric) + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 30V 40A 1.75Ohms 17.958In Stock
24.000Expected 1/26/2027
Cut Tape
0,456 €
0,412 €
0,347 €
0,31 €
Reel
0,195 €
Min.: 1
Mult.: 1
: 2.000
miniSMD SMD/SMT SMD/SMT 300 mA 30 VDC 600 mA 40 A 1.75 Ohms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 24V 750MA-HD 40A MAX 8.300In Stock
12.000Expected 2/11/2027
Cut Tape
0,585 €
0,535 €
0,445 €
0,409 €
Reel
0,257 €
Min.: 1
Mult.: 1
: 1.500
miniSMD SMD/SMT SMD/SMT 750 mA 24 VDC 1.5 A 40 A 290 mOhms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 24V 1.1A-HD 40A MAX 36.119In Stock
57.000Expected 1/25/2027
Cut Tape
0,559 €
0,503 €
0,424 €
0,387 €
Reel
0,266 €
Min.: 1
Mult.: 1
: 1.500
miniSMD SMD/SMT SMD/SMT 1.1 A 24 VDC 2.2 A 20 A 180 mOhms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .35A RESETTABLE SMD FUSE 42.090In Stock
Cut Tape
0,464 €
0,424 €
0,349 €
0,325 €
Reel
0,187 €
Min.: 1
Mult.: 1
: 3.000
nanoSMD SMD/SMT SMD/SMT 350 mA 16 VDC 750 mA 20 A 1.35 Ohms 1206 (3216 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC RGEF900 6.000In Stock
0,714 €
0,655 €
0,544 €
0,502 €
Min.: 1
Mult.: 1
RGEF PCB Mount Radial 9 A 16 VDC 15.3 A 100 A 13.5 mOhms - 40 C + 85 C 5.8 mm Bulk
Littelfuse Resettable Fuses - PPTC 1.6A 30V 100A Imax 13.303In Stock
0,396 €
0,364 €
0,303 €
0,279 €
Min.: 1
Mult.: 1
RUEF PCB Mount Radial 1.6 A 30 VDC 3.2 A 100 A 110 mOhms - 40 C + 85 C 5.8 mm Bulk
Littelfuse Resettable Fuses - PPTC 3A 30V 100A Imax 23.999In Stock
29.500Expected 2/4/2027
0,447 €
0,409 €
0,34 €
0,302 €
Min.: 1
Mult.: 1
RUEF PCB Mount Radial 3 A 30 VDC 6 A 100 A 80 mOhms - 40 C + 85 C 5.8 mm Bulk
Littelfuse Resettable Fuses - PPTC 3A 30V 100A Imax 5.722In Stock
Cut Tape
0,55 €
0,507 €
0,421 €
0,388 €
Reel
0,242 €
Min.: 1
Mult.: 1
: 2.500
RUEF PCB Mount Radial 3 A 30 VDC 6 A 100 A 80 mOhms - 40 C + 85 C 5.8 mm Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC 4A 30V 100A Imax 14.007In Stock
0,525 €
0,482 €
0,40 €
0,369 €
Min.: 1
Mult.: 1
RUEF PCB Mount Radial 4 A 30 VDC 8 A 100 A 50 mOhms - 40 C + 85 C 5.8 mm Bulk
Littelfuse Resettable Fuses - PPTC Radial Lead .3A 72V 40A Imax
51.469In Stock
0,353 €
0,321 €
0,268 €
0,248 €
Min.: 1
Mult.: 1
RXEF PCB Mount Radial 300 mA 72 VDC 600 mA 40 A 2.1 Ohms - 40 C + 85 C 5.8 mm Bulk
Littelfuse Resettable Fuses - PPTC Radial Lead .5A 72V 40A Imax
26.400In Stock
44.000Expected 1/18/2027
0,378 €
0,326 €
0,276 €
0,249 €
Min.: 1
Mult.: 1
RXEF PCB Mount Radial 500 mA 72 VDC 1 A 40 A 1.17 Ohms - 40 C + 85 C 5.8 mm Bulk
Littelfuse Resettable Fuses - PPTC Radial Lead .5A 72V 40A Imax
8.247In Stock
Cut Tape
0,447 €
0,408 €
0,338 €
0,312 €
Reel
0,19 €
Min.: 1
Mult.: 1
: 3.000
RXEF PCB Mount Radial 500 mA 72 VDC 1 A 40 A 1.17 Ohms - 40 C + 85 C 5.8 mm Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC Radial Lead 2.5A 72V 40A Imax
28.065In Stock
0,697 €
0,642 €
0,504 €
0,48 €
Min.: 1
Mult.: 1
RXEF PCB Mount Radial 2.5 A 72 VDC 5 A 40 A 130 mOhms - 40 C + 85 C 10.9 mm Bulk
Littelfuse Resettable Fuses - PPTC Radial Lead 3A 72V 40A Imax
7.591In Stock
10.750Expected 2/4/2027
0,808 €
0,721 €
0,617 €
0,569 €
Min.: 1
Mult.: 1
RXEF PCB Mount Radial 3 A 72 VDC 6 A 40 A 100 mOhms - 40 C + 85 C 10.9 mm Bulk
Littelfuse Resettable Fuses - PPTC Radial Lead 3.75A 72V 40A Imax
14.910In Stock
1,01 €
0,929 €
0,756 €
0,70 €
Min.: 1
Mult.: 1
RXEF PCB Mount Radial 3.75 A 72 VDC 7.5 A 40 A 80 mOhms - 40 C + 85 C 10.9 mm Bulk
Littelfuse Resettable Fuses - PPTC .3A 60V 10A Imax 38.867In Stock
Cut Tape
0,464 €
0,429 €
0,356 €
0,329 €
Reel
0,237 €
Min.: 1
Mult.: 1
: 2.000
SMD SMD/SMT SMD/SMT 300 mA 60 VDC 600 mA 10 A 4.8 Ohms 2920 (7450 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel