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 1812 15V .5A 7.382In Stock
10.000Expected 1/7/2027
Cut Tape
0,49 €
0,44 €
0,371 €
0,326 €
Reel
0,207 €
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 0.30A 60V 2920 13.885In Stock
Cut Tape
0,611 €
0,556 €
0,463 €
0,40 €
Reel
0,269 €
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 PTC 15V 2920 3A 16.806In Stock
Cut Tape
0,826 €
0,758 €
0,629 €
0,574 €
Reel
0,406 €
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 €
0,652 €
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 3.431In Stock
1,68 €
1,55 €
1,28 €
1,19 €
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 10.155In 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 1.10A 16V 100A Imax 12.366In Stock
Cut Tape
0,499 €
0,43 €
0,378 €
0,349 €
Reel
0,247 €
Min.: 1
Mult.: 1
: 2.000
miniSMD PCB Mount SMD/SMT 1812 (4532 metric) + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 24V 750MA-HD 40A MAX 8.562In Stock
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 39.612In Stock
Cut Tape
0,559 €
0,503 €
0,424 €
0,387 €
Reel
0,252 €
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 43.090In 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 13.509In 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 24.949In Stock
29.500Expected 1/25/2027
0,516 €
0,415 €
0,36 €
0,292 €
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 13.222In 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 16.350In 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
52.687In 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
31.031In 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
30.640In 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
8.099In Stock
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
14.943In Stock
1,01 €
0,929 €
0,757 €
0,701 €
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 42.355In 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
Littelfuse Resettable Fuses - PPTC .75A 30V 40A Imax 27.305In Stock
Cut Tape
0,482 €
0,438 €
0,364 €
0,335 €
Reel
0,237 €
Min.: 1
Mult.: 1
: 2.000
SMD SMD/SMT SMD/SMT 750 mA 30 VDC 1.5 A 40 A 1 Ohms 2920 (7450 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 15V 40A 0.05Ohms 11.057In Stock
Cut Tape
0,611 €
0,532 €
0,464 €
0,429 €
Reel
0,309 €
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