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: 123
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
Bourns Resettable Fuses - PPTC 250V 130MA-HD 3A MAX 20.074In Stock
Cut Tape
1,18 €
0,877 €
0,722 €
0,665 €
Reel
0,42 €
Min.: 1
Mult.: 1
: 4.000
MF-SD/250 PCB Mount SMD/SMT 130 mA 60 VDC 260 mA 3 A 7 Ohms - 45 C + 85 C Reel, Cut Tape, MouseReel
Bourns Resettable Fuses - PPTC 72V 1.6A-HD 40A MAX 11.156In Stock
0,335 €
0,286 €
0,25 €
0,238 €
Min.: 1
Mult.: 1
MF-RX/72 PCB Mount Radial 1.6 A 72 VDC 3.2 A 40 A 140 mOhms - 40 C + 85 C 5.1 mm Bulk
Littelfuse Resettable Fuses - PPTC PTC POLYFUSE RADIAL 72V 1.85A 3.466In Stock
1,53 €
1,42 €
1,18 €
1,08 €
Reel
0,738 €
Min.: 1
Mult.: 1
: 1.000
72R PCB Mount Radial 1.85 A 72 VDC 3.7 A 40 A 190 mOhms - 40 C + 85 C 5.1 mm Ammo Pack
Bourns Resettable Fuses - PPTC RESETTABLE FUSE 230VOLT 10OHM 9.338In Stock
0,576 €
0,502 €
0,438 €
0,402 €
Min.: 1
Mult.: 1
CMF-RL PCB Mount Radial 150 mA 60 VDC 300 mA 3 A 10 Ohms - 40 C + 125 C 5 mm Tray
Littelfuse Resettable Fuses - PPTC 1.85A 33V 2920 30.383In Stock
57.000On Order
Cut Tape
0,705 €
0,631 €
0,536 €
0,495 €
Reel
0,314 €
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 .5A 24V Mini SMD AEC-Q200 10.194In Stock
Cut Tape
0,482 €
0,442 €
0,367 €
0,339 €
Reel
0,205 €
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
Bourns Resettable Fuses - PPTC 24V 1.8A-HD 100A MAX 13.387In Stock
0,473 €
0,409 €
0,354 €
0,326 €
Min.: 1
Mult.: 1
MF-LS Strap Mount Axial 1.8 A 24 VDC 3.8 A 100 A 68 mOhms - 40 C + 85 C Bulk
Littelfuse Resettable Fuses - PPTC PTC 16V 10A POLY RADIAL LEADS 1.606In Stock
Cut Tape
1,39 €
1,20 €
1,06 €
0,955 €
Reel
0,667 €
Min.: 1
Mult.: 1
: 1.000
16R PCB Mount Radial 10 A 16 VDC 17 A 100 A 10.2 mOhms - 40 C + 85 C 5.1 mm Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC 60V .170A RADIAL LEADS 2.816In Stock
0,525 €
0,482 €
0,401 €
0,37 €
Reel
0,224 €
Min.: 1
Mult.: 1
: 2.000
60R PCB Mount Radial 170 mA 60 VDC 340 mA 40 A 8 Ohms - 40 C + 85 C 5.1 mm Ammo Pack
Littelfuse Resettable Fuses - PPTC .75A 24V Mini SMD AEC-Q200 2.527In Stock
Cut Tape
0,602 €
0,516 €
0,464 €
0,424 €
Reel
0,281 €
Min.: 1
Mult.: 1
: 1.500
miniASMD SMD/SMT SMD/SMT 750 mA 24 VDC 1.5 A 40 A 290 mOhms 1812 (4532 metric) - 40 C + 85 C AEC-Q100 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 30V POLYFUSE 1.35A RADIAL LEADS 3.156In Stock
0,559 €
0,469 €
0,40 €
0,359 €
Reel
0,261 €
Min.: 1
Mult.: 1
: 2.000
30R PCB Mount Radial 1.35 A 30 VDC 2.7 A 40 A 130 mOhms - 40 C + 85 C 5.1 mm Ammo Pack
Littelfuse Resettable Fuses - PPTC .2A 30V Mini SMD AEC-Q200 4.705In Stock
Cut Tape
0,482 €
0,442 €
0,367 €
0,339 €
Reel
0,259 €
Min.: 1
Mult.: 1
: 2.000
miniASMD SMD/SMT SMD/SMT 200 mA 30 VDC 400 mA 10 A 3.3 Ohms 1812 (4532 metric) - 40 C + 85 C AEC-Q100 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 1.1A 16V Mini SMD AEC-Q200 3.988In Stock
Cut Tape
0,464 €
0,397 €
0,345 €
0,316 €
Reel
0,256 €
Min.: 1
Mult.: 1
: 2.000
miniASMD SMD/SMT SMD/SMT 1.1 A 16 VDC 2.2 A 100 A 180 mOhms 1812 (4532 metric) - 40 C + 85 C AEC-Q100 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 1.10A 33V 2920 50.921In Stock
Cut Tape
0,731 €
0,55 €
0,53 €
0,448 €
Reel
0,309 €
Min.: 1
Mult.: 1
: 2.000
2920L 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 60V 40A 12.7Ohms 31.525In Stock
Cut Tape
0,464 €
0,409 €
0,348 €
0,266 €
Reel
0,201 €
Min.: 1
Mult.: 1
: 2.000
miniSMD SMD/SMT SMD/SMT 100 mA 60 VDC 300 mA 40 A 12.7 Ohms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Bourns Resettable Fuses - PPTC 24V 750MA-HD 40A MAX 28.895In Stock
Cut Tape
0,353 €
0,323 €
0,268 €
0,248 €
Reel
0,162 €
Min.: 1
Mult.: 1
: 4.000
MF-MSMF SMD/SMT SMD/SMT 750 mA 24 VDC 1.5 A 40 A 450 mOhms 1812 (4532 metric) - 40 C + 85 C AEC-Q100 Reel, Cut Tape, MouseReel
Bourns Resettable Fuses - PPTC 72V 1.1A-HD 40A MAX 17.391In Stock
0,344 €
0,298 €
0,259 €
0,238 €
Min.: 1
Mult.: 1
MF-RX/72 PCB Mount Radial 1.1 A 72 VDC 2.2 A 40 A 250 mOhms - 40 C + 85 C 5.1 mm Bulk
Bourns Resettable Fuses - PPTC 72V 1.1A-HD 40A MAX 13.007In Stock
Cut Tape
0,37 €
0,335 €
0,279 €
0,267 €
Reel
0,267 €
Min.: 1
Mult.: 1
: 3.000
MF-RX/72 PCB Mount Radial 1.1 A 72 VDC 2.2 A 40 A 250 mOhms - 40 C + 85 C 5.1 mm Reel, Cut Tape
Bourns Resettable Fuses - PPTC 30V 1.85A-HD 40A MAX 13.082In Stock
0,396 €
0,36 €
0,299 €
0,276 €
Min.: 1
Mult.: 1
MF-R PCB Mount Radial 1.85 A 30 VDC 3.7 A 40 A 70 mOhms - 40 C + 85 C 5.1 mm Bulk
Bourns Resettable Fuses - PPTC 30V 4A-HD 40A MAX 8.312In Stock
0,447 €
0,396 €
0,339 €
0,313 €
Min.: 1
Mult.: 1
MF-R PCB Mount Radial 4 A 30 VDC 8 A 40 A 30 mOhms - 40 C + 85 C 5.1 mm Bulk
Bourns Resettable Fuses - PPTC 15V 2.0A-HD 40A MAX
9.738In Stock
Cut Tape
0,353 €
0,323 €
0,268 €
0,248 €
Reel
0,161 €
Min.: 1
Mult.: 1
: 3.000
MF-SM SMD/SMT SMD/SMT 2 A 15 VDC 4 A 100 A 125 mOhms 3425 (8764 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 0.10A 15V 0805 2.370In Stock
8.000Expected 12/24/2026
Cut Tape
1,04 €
Reel
1,04 €
Min.: 1
Mult.: 1
: 4.000
0805L SMD/SMT SMD/SMT 100 mA 15 VDC 300 mA 100 A 6 Ohms 0805 (2012 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 30V 1206 .160A POLYFUSE 25.222In Stock
21.000Expected 11/5/2026
Cut Tape
0,456 €
0,42 €
0,348 €
0,319 €
Reel
0,197 €
Min.: 1
Mult.: 1
: 3.000
1206L SMD/SMT SMD/SMT 160 mA 30 VDC 370 mA 100 A 4.5 Ohms 1206 (3216 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 15V 1206 .500A POLYFUSE 12.527In Stock
28.000Expected 12/24/2026
Cut Tape
0,482 €
0,402 €
0,341 €
0,309 €
Reel
0,197 €
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 0.10A 30V 1210 32.807In Stock
Cut Tape
0,482 €
0,439 €
0,365 €
0,336 €
Reel
0,206 €
Min.: 1
Mult.: 1
: 3.000
1210L PCB Mount SMD/SMT 100 mA 30 VDC 300 mA 10 A 15 Ohms 1210 (3225 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel