Resettable Fuses - PPTC – Mouser United Kingdom

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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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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (GBP) Filter the results in the table by unit price based on your quantity.	Qty.	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
Resettable Fuses - PPTC 72V 1.6A-HD 40A MAX MF-RX160/72-0 Bourns 1: £0.24 11,276In Stock	Mfr. Part No. MF-RX160/72-0 Mouser Part No 652-MF-RX160/72-0	Bourns	Resettable Fuses - PPTC 72V 1.6A-HD 40A MAX Learn More about Bourns multifuse	Datasheet	11,276In Stock	£0.24 £0.223 £0.206 £0.202 View £0.186 £0.173 £0.144	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
Resettable Fuses - PPTC 250V 130MA-HD 3A MAX MF-SD013/250-2 Bourns 1: £1.03 20,084In Stock	Mfr. Part No. MF-SD013/250-2 Mouser Part No 652-MF-SD013/250-2	Bourns	Resettable Fuses - PPTC 250V 130MA-HD 3A MAX Learn More about Bourns mf sd013 250	Datasheet	20,084In Stock	Cut Tape £1.03 £0.796 £0.598 £0.584 View Reel £0.357 £0.533 £0.491 £0.438 £0.425 £0.357 MouseReel Available	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
Resettable Fuses - PPTC .05A 30V Micro SMD AEC-Q200 MICROASMD005F-2 Littelfuse 1: £0.30 7,353In Stock	Mfr. Part No. MICROASMD005F-2 Mouser Part No 650-MICROASMD005F-2	Littelfuse	Resettable Fuses - PPTC .05A 30V Micro SMD AEC-Q200 Learn More about Littelfuse polyswitch automotive pptcs	Datasheet	7,353In Stock	Cut Tape £0.30 £0.275 £0.264 £0.238 View Reel £0.182 £0.216 £0.206 £0.197 £0.19 £0.182 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	microASMD	SMD/SMT	SMD/SMT	50 mA	30 VDC	150 mA	10 A	50 Ohms	1210 (3225 metric)	- 40 C	+ 85 C		AEC-Q100	Reel, Cut Tape, MouseReel
Resettable Fuses - PPTC PTC POLYFUSE RADIAL 72V 1.85A 72R185XMR Littelfuse 1: £1.34 3,466In Stock	Mfr. Part No. 72R185XMR Mouser Part No 576-72R185XMR	Littelfuse	Resettable Fuses - PPTC PTC POLYFUSE RADIAL 72V 1.85A Learn More about Littelfuse radial leaded pptcs	Datasheet	3,466In Stock	£1.34 £1.24 £1.01 £0.925 Reel £0.604 View £0.849 £0.796 £0.598 £0.593	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
Resettable Fuses - PPTC RESETTABLE FUSE 230VOLT 10OHM CMF-RL10-10-0 Bourns 1: £0.443 9,758In Stock	Mfr. Part No. CMF-RL10-10-0 Mouser Part No 652-CMF-RL10-10-0	Bourns	Resettable Fuses - PPTC RESETTABLE FUSE 230VOLT 10OHM Learn More about Bourns multifuse	Datasheet	9,758In Stock	£0.443 £0.416 £0.373 £0.343 View £0.319 £0.299 £0.27 £0.267 £0.262	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
Resettable Fuses - PPTC .5A 24V Mini SMD AEC-Q200 MINIASMDC050F-2 Littelfuse 1: £0.421 14,214In Stock	Mfr. Part No. MINIASMDC050F-2 Mouser Part No 650-MINIASMDC050F-2	Littelfuse	Resettable Fuses - PPTC .5A 24V Mini SMD AEC-Q200 Learn More about Littelfuse polyswitch automotive pptcs	Datasheet	14,214In Stock	Cut Tape £0.421 £0.386 £0.32 £0.295 Reel £0.178 View £0.265 £0.245 £0.224 £0.165 MouseReel Available	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
Resettable Fuses - PPTC 30V 3.5A-HD 100A MAX MF-S350 Bourns 1: £0.48 10,295In Stock	Mfr. Part No. MF-S350 Mouser Part No 652-MFS350	Bourns	Resettable Fuses - PPTC 30V 3.5A-HD 100A MAX Learn More about Bourns multifuse	Datasheet	10,295In Stock	£0.48 £0.443 £0.368 £0.323 View £0.238 £0.23 £0.223 £0.222 £0.215	Min.: 1 Mult.: 1	MF-S	Strap Mount	Axial	3.5 A	30 VDC	6.3 A	100 A	31 mOhms		- 40 C	+ 85 C			Bulk
Resettable Fuses - PPTC 24V 1.8A-HD 100A MAX MF-LS180 Bourns 1: £0.361 13,387In Stock	Mfr. Part No. MF-LS180 Mouser Part No 652-MF-LS180	Bourns	Resettable Fuses - PPTC 24V 1.8A-HD 100A MAX Learn More about Bourns multifuse	Datasheet	13,387In Stock	£0.361 £0.32 £0.288 £0.278 View £0.277 £0.255 £0.211	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
Resettable Fuses - PPTC .12A 240VAC 20/1.2A Imax LVR012S-2 Littelfuse 1: £0.623 8,291In Stock	Mfr. Part No. LVR012S-2 Mouser Part No 650-LVR012S-2	Littelfuse	Resettable Fuses - PPTC .12A 240VAC 20/1.2A Imax Learn More about Littelfuse TE LVR Fuse	Datasheet	8,291In Stock	Cut Tape £0.623 £0.57 £0.438 £0.422 Reel £0.265 View £0.392 £0.361 £0.325 £0.253	Min.: 1 Mult.: 1 : 2,000	LVR	PCB Mount	Radial	120 mA	120 VAC/VDC	300 mA	20 A	12 Ohms		- 40 C	+ 85 C	5.8 mm		Reel, Cut Tape
Resettable Fuses - PPTC 60V .170A RADIAL LEADS 60R017XPR Littelfuse 1: £0.458 2,824In Stock	Mfr. Part No. 60R017XPR Mouser Part No 576-60R017XPR	Littelfuse	Resettable Fuses - PPTC 60V .170A RADIAL LEADS Learn More about Littelfuse radial leaded pptcs	Datasheet	2,824In Stock	£0.458 £0.421 £0.35 £0.323 Reel £0.186 View £0.29 £0.267 £0.247 £0.182	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
Resettable Fuses - PPTC .75A 24V Mini SMD AEC-Q200 MINIASMDC075F/24-2 Littelfuse 1: £0.473 2,646In Stock	Mfr. Part No. MINIASMDC075F/24-2 Mouser Part No 650-MINIASMDC075F/24	Littelfuse	Resettable Fuses - PPTC .75A 24V Mini SMD AEC-Q200 Learn More about Littelfuse polyswitch automotive pptcs	Datasheet	2,646In Stock	Cut Tape £0.473 £0.424 £0.395 £0.371 Reel £0.245 View £0.346 £0.307 £0.227 MouseReel Available	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
Resettable Fuses - PPTC 30V POLYFUSE 1.35A RADIAL LEADS 30R135UPR Littelfuse 1: £0.465 3,366In Stock	Mfr. Part No. 30R135UPR Mouser Part No 576-30R135UPR	Littelfuse	Resettable Fuses - PPTC 30V POLYFUSE 1.35A RADIAL LEADS Learn More about Littelfuse radial leaded pptcs	Datasheet	3,366In Stock	£0.465 £0.409 £0.345 £0.32 View Reel £0.222 £0.298 £0.271 £0.251 £0.222	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
Resettable Fuses - PPTC Radial Lead 2.5A 72V 40A Imax RXEF250 Littelfuse 1: £0.608 33,697In Stock	Mfr. Part No. RXEF250 Mouser Part No 650-RXEF250	Littelfuse	Resettable Fuses - PPTC Radial Lead 2.5A 72V 40A Imax Learn More about Littelfuse radial leaded pptcs	Datasheet	33,697In Stock	£0.608 £0.56 £0.432 £0.42 View £0.378 £0.353 £0.344 £0.335 £0.331	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
Resettable Fuses - PPTC .3A 60V 10A Imax SMD030F-2 Littelfuse 1: £0.405 50,025In Stock	Mfr. Part No. SMD030F-2 Mouser Part No 650-SMD030F-2	Littelfuse	Resettable Fuses - PPTC .3A 60V 10A Imax Learn More about Littelfuse polyswitch smd ptcs	Datasheet	50,025In Stock	Cut Tape £0.405 £0.375 £0.311 £0.287 View Reel £0.207 £0.258 £0.238 £0.219 £0.207 MouseReel Available	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
Resettable Fuses - PPTC 60V 40A 12.7Ohms MINISMDC010F-2 Littelfuse 1: £0.405 31,595In Stock	Mfr. Part No. MINISMDC010F-2 Mouser Part No 650-MINISMDC010F-2	Littelfuse	Resettable Fuses - PPTC 60V 40A 12.7Ohms Learn More about Littelfuse polyswitch smd ptcs	Datasheet	31,595In Stock	Cut Tape £0.405 £0.363 £0.31 £0.271 View Reel £0.179 £0.212 £0.207 £0.189 £0.179 MouseReel Available	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
Resettable Fuses - PPTC 24V 750MA-HD 40A MAX MF-MSMF075/24-2 Bourns 1: £0.308 10,209In Stock 20,000Expected 04/11/2026	Mfr. Part No. MF-MSMF075/24-2 Mouser Part No 652-MF-MSMF075/24-2	Bourns	Resettable Fuses - PPTC 24V 750MA-HD 40A MAX Learn More about Bourns mf msmf series fuses	Datasheet	10,209In Stock 20,000Expected 04/11/2026	Cut Tape £0.308 £0.282 £0.234 £0.217 View Reel £0.141 £0.195 £0.18 £0.166 £0.153 £0.141 MouseReel Available	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
Resettable Fuses - PPTC 72V 1.1A-HD 40A MAX MF-RX110/72-0 Bourns 1: £0.30 17,461In Stock	Mfr. Part No. MF-RX110/72-0 Mouser Part No 652-MF-RX110/72-0	Bourns	Resettable Fuses - PPTC 72V 1.1A-HD 40A MAX Learn More about Bourns multifuse	Datasheet	17,461In Stock	£0.30 £0.26 £0.226 £0.208 View £0.187 £0.175	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
Resettable Fuses - PPTC 30V 1.85A-HD 40A MAX MF-R185 Bourns 1: £0.346 14,358In Stock	Mfr. Part No. MF-R185 Mouser Part No 652-MFR185	Bourns	Resettable Fuses - PPTC 30V 1.85A-HD 40A MAX Learn More about Bourns mf r	Datasheet	14,358In Stock	£0.346 £0.314 £0.261 £0.236 View £0.217 £0.20 £0.184 £0.153	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
Resettable Fuses - PPTC 30V 4A-HD 40A MAX MF-R400 Bourns 1: £0.39 8,435In Stock	Mfr. Part No. MF-R400 Mouser Part No 652-MFR400	Bourns	Resettable Fuses - PPTC 30V 4A-HD 40A MAX Learn More about Bourns mf r	Datasheet	8,435In Stock	£0.39 £0.351 £0.296 £0.271 View £0.245 £0.227 £0.209 £0.173	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
Resettable Fuses - PPTC 15V 2.0A-HD 40A MAX MF-SM200-2 Bourns 1: £0.308 9,766In Stock	Mfr. Part No. MF-SM200-2 Mouser Part No 652-MFSM200-2	Bourns	Resettable Fuses - PPTC 15V 2.0A-HD 40A MAX Learn More about Bourns multifuse	Datasheet	9,766In Stock	Cut Tape £0.308 £0.282 £0.234 £0.21 View Reel £0.141 £0.195 £0.18 £0.158 £0.141 MouseReel Available	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
Resettable Fuses - PPTC 0.10A 15V 0805 0805L010YR Littelfuse 1: £1.07 2,711In Stock 8,000Expected 17/12/2026	Mfr. Part No. 0805L010YR Mouser Part No 576-0805L010	Littelfuse	Resettable Fuses - PPTC 0.10A 15V 0805 Learn More about Littelfuse 0805l ptc fuses	Datasheet	2,711In Stock 8,000Expected 17/12/2026	Cut Tape £1.07 Reel £1.07 MouseReel Available	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
Resettable Fuses - PPTC 30V 1206 .160A POLYFUSE 1206L016WR Littelfuse 1: £0.398 16,675In Stock 51,000Expected 10/11/2026	Mfr. Part No. 1206L016WR Mouser Part No 576-1206L016WR	Littelfuse	Resettable Fuses - PPTC 30V 1206 .160A POLYFUSE Learn More about Littelfuse 1206l poly fuse resettable ptcs	Datasheet	16,675In Stock 51,000Expected 10/11/2026	Cut Tape £0.398 £0.367 £0.304 £0.278 View Reel £0.203 £0.252 £0.233 £0.212 £0.203 MouseReel Available	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
Resettable Fuses - PPTC 15V 1206 .500A POLYFUSE 1206L050/15YR Littelfuse 1: £0.398 18,280In Stock 28,000Expected 17/12/2026	Mfr. Part No. 1206L050/15YR Mouser Part No 576-1206L050/15YR	Littelfuse	Resettable Fuses - PPTC 15V 1206 .500A POLYFUSE Learn More about Littelfuse 1206l poly fuse resettable ptcs	Datasheet	18,280In Stock 28,000Expected 17/12/2026	Cut Tape £0.398 £0.35 £0.304 £0.262 View Reel £0.203 £0.243 £0.227 £0.206 £0.203 £0.203 MouseReel Available	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
Resettable Fuses - PPTC 0.10A 30V 1210 1210L010WR Littelfuse 1: £0.421 37,365In Stock	Mfr. Part No. 1210L010WR Mouser Part No 576-1210L010	Littelfuse	Resettable Fuses - PPTC 0.10A 30V 1210 Learn More about Littelfuse 1210l pptc fuses	Datasheet	37,365In Stock	Cut Tape £0.421 £0.383 £0.319 £0.293 View Reel £0.18 £0.265 £0.244 £0.223 £0.18 MouseReel Available	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
Resettable Fuses - PPTC 0.14A 60V 1812 1812L014DR Littelfuse 1: £0.405 15,994In Stock	Mfr. Part No. 1812L014DR Mouser Part No 576-1812L014	Littelfuse	Resettable Fuses - PPTC 0.14A 60V 1812 Learn More about Littelfuse 1812l fuses	Datasheet	15,994In Stock	Cut Tape £0.405 £0.368 £0.306 £0.281 View Reel £0.203 £0.254 £0.234 £0.203 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