PTC Resettable Fuses

Category Introduction

PTC Resettable Fuses are designed to stop current flow when it exceeds a certain limit (overcurrent protection). The Fuses work by increasing its resistance as its temperature rises due to the current increase. The trip current ranges from 14 mA to 50 A with the Time to trip ranging from 8 ms to 90 s. PTC = Positive Temperature Coefficient.

Product List

5803 Items

PDF	Mfr Part #	Quantity Available	UnitPrice	RFQ	Series	Packaging	Product Status	Type	Voltage - Max	Current - Max	Current - Hold (Ih) (Max)	Current - Trip (It)	Time to Trip	Resistance - Initial (Ri) (Min)	Resistance - Post Trip (R1) (Max)	Resistance - 25°C (Typ)	Operating Temperature	Ratings	Mounting Type	Package / Case	Size / Dimension	Height - Seated (Max)	Thickness (Max)	Lead Spacing
	0603L200SL-VYR PTC RESET FUSE 2.0A 6V 0603 Littelfuse Inc.	489	$1.84		POLY-FUSE®, LoRho	Tape & Reel (TR)	Active	Polymeric	6V	50 A	2 A	4 A	1 s	5 mOhms	40 mOhms	-	-40°C ~ 85°C	-	Surface Mount	0603 (1608 Metric), Concave	0.063" L x 0.031" W (1.60mm x 0.80mm)	-	0.039" (1.00mm)	-
	0805L035YR PTC RESET FUSE 6V 350MA 0805 Littelfuse Inc.	740	$0.82		POLY-FUSE®, 0805L	Tape & Reel (TR)	Active	Polymeric	6V	100 A	350 mA	750 mA	100 ms	250 mOhms	1.2 Ohms	-	-40°C ~ 85°C	-	Surface Mount	0805 (2012 Metric), Concave	0.083" L x 0.053" W (2.10mm x 1.35mm)	-	0.030" (0.75mm)	-
	1812L050/60MR-A PTC RESET FUSE 60V 500MA 1812 Littelfuse Inc.	218	$1.72		POLY-FUSE®, 1812L	Tape & Reel (TR)	Active	Polymeric	60V	10 A	500 mA	1 A	150 ms	150 mOhms	1 Ohms	-	-40°C ~ 85°C	AEC-Q200	Surface Mount	1812 (4532 Metric), Concave	0.179" L x 0.128" W (4.55mm x 3.24mm)	-	0.071" (1.80mm)	-
	LVR025S PTC RESET FUSE 240V 250MA RADIAL Littelfuse Inc.	976	$0.79		PolySwitch®, LVR	Bulk	Active	Polymeric	240V (265V Int)	3.5 A	250 mA	560 mA	18.5 s	1.3 Ohms	3.8 Ohms	-	-20°C ~ 85°C	-	Through Hole	Radial, Disc	0.378" L x 0.150" W (9.60mm x 3.80mm)	0.685" (17.40mm)	-	0.200" (5.08mm)
	0ZRM0100FF1E PTC RESET FUSE 120V 1A RADIAL Bel Fuse Inc.	482	$0.79		0ZRM	Box	Active	Polymeric	120V	10 A	1 A	2 A	15 s	180 mOhms	470 mOhms	-	-40°C ~ 85°C	AEC-Q200	Through Hole	Radial, Disc	0.453" Dia x 0.161" T (11.50mm x 4.10mm)	0.791" (20.10mm)	-	0.201" (5.10mm)
	MF-RX375/72-0 PTC RESET FUSE 72V 3.75A RADIAL Bourns Inc.	472	$0.79		Multifuse®, MF-RX/72	Bulk	Active	Polymeric	72V	40 A	3.75 A	7.5 A	24 s	30 mOhms	80 mOhms	-	-40°C ~ 85°C	-	Through Hole	Radial, Disc	0.926" L x 0.122" W (23.51mm x 3.10mm)	1.161" (29.50mm)	-	0.402" (10.20mm)
	MF-R900 PTC RESET FUSE 30V 9A RADIAL Bourns Inc.	905	$0.79		Multifuse®, MF-R	Bulk	Active	Polymeric	30V	40 A	9 A	18 A	20 s	5 mOhms	20 mOhms	-	-40°C ~ 85°C	-	Through Hole	Radial, Disc	0.953" L x 0.118" W (24.20mm x 3.00mm)	1.295" (32.90mm)	-	0.402" (10.20mm)
	0ZRS0100FF1E PTC RESET FUSE 32V 1A RADIAL Bel Fuse Inc.	594	$0.80		0ZRS	Bulk	Active	Ceramic	32V	100 A	1 A	1.9 A	6.2 s	150 mOhms	430 mOhms	-	-40°C ~ 125°C	AEC-Q200	Through Hole	Radial, Disc	0.382" Dia x 0.118" T (9.70mm x 3.00mm)	0.535" (13.60mm)	-	0.201" (5.10mm)
	RKEF375 PTC RESET FUSE 60V 3.75A RADIAL Littelfuse Inc.	656	$0.80		PolySwitch®, RKEF	Bag	Active	Polymeric	60V	40 A	3.75 A	7.5 A	22 s	17 mOhms	60 mOhms	-	-40°C ~ 85°C	-	Through Hole	Radial, Disc	0.650" L x 0.118" W (16.50mm x 3.00mm)	0.992" (25.20mm)	-	0.199" (5.05mm)
	0ZRS0050FF1E PTC RESET FUSE 32V 500MA RADIAL Bel Fuse Inc.	933	$0.80		0ZRS	Bulk	Active	Ceramic	32V	100 A	500 mA	1 A	3 s	350 mOhms	1.1 Ohms	-	-40°C ~ 125°C	AEC-Q200	Through Hole	Radial, Disc	0.291" Dia x 0.118" T (7.40mm x 3.00mm)	0.500" (12.70mm)	-	0.201" (5.10mm)
	RKEF375K PTC RESET FUSE 60V 3.75A RADIAL Littelfuse Inc.	696	$0.80		PolySwitch®, RKEF	Bag	Active	Polymeric	60V	40 A	3.75 A	7.5 A	22 s	17 mOhms	60 mOhms	-	-40°C ~ 85°C	-	Through Hole	Radial, Disc	0.650" L x 0.118" W (16.50mm x 3.00mm)	0.992" (25.20mm)	-	0.199" (5.05mm)
	AHEF100 PTC RESET FUSE 32V 1A RADIAL Littelfuse Inc.	1,089	$0.80		PolySwitch®, AHEF	Bag	Active	Polymeric	32V	100 A	1 A	1.9 A	6.2 s	150 mOhms	430 mOhms	-	-40°C ~ 125°C	AEC-Q200	Through Hole	Radial, Disc	0.382" Dia x 0.118" T (9.70mm x 3.00mm)	0.535" (13.60mm)	-	0.199" (5.05mm)
	0ZRM0125FF1A PTC RESET FUSE 120V 1.25A RADIAL Bel Fuse Inc.	1,073	$0.82		0ZRM	Box	Active	Polymeric	120V	12.5 A	1.25 A	2.5 A	20 s	110 mOhms	330 mOhms	-	-40°C ~ 85°C	AEC-Q200	Through Hole	Radial, Disc	0.551" L x 0.161" W (14.00mm x 4.10mm)	0.854" (21.70mm)	-	0.201" (5.10mm)
	0ZRM0110FF1E PTC RESET FUSE 120V 1.1A RADIAL Bel Fuse Inc.	1,047	$0.82		0ZRM	Box	Active	Polymeric	120V	8 A	1.1 A	2.2 A	8.2 s	150 mOhms	380 mOhms	-	-40°C ~ 85°C	AEC-Q200	Through Hole	Radial, Disc	0.524" Dia x 0.161" T (13.30mm x 4.10mm)	0.720" (18.30mm)	-	0.201" (5.10mm)
	1812L010/60DR PTC RESET FUSE 60V 100MA 1812 Littelfuse Inc.	251	$1.86		POLY-FUSE®, 1812L	Tape & Reel (TR)	Active	Polymeric	60V	10 A	100 mA	300 mA	1.5 s	1.6 Ohms	15 Ohms	-	-40°C ~ 85°C	-	Surface Mount	1812 (4532 Metric), Concave	0.179" L x 0.128" W (4.55mm x 3.24mm)	-	0.049" (1.25mm)	-
	MF-RX300/72-0 PTC RESET FUSE 72V 3A RADIAL Bourns Inc.	314	$0.82		Multifuse®, MF-RX/72	Bulk	Active	Polymeric	72V	40 A	3 A	6 A	19.8 s	40 mOhms	100 mOhms	-	-40°C ~ 85°C	-	Through Hole	Radial, Disc	0.980" L x 0.122" W (24.90mm x 3.10mm)	1.181" (30.00mm)	-	0.402" (10.20mm)
	MF-RHT200/32-0 PTC RESET FUSE 32V 2A RADIAL Bourns Inc.	833	$0.83		Multifuse®, MF-RHT	Bag	Active	Polymeric	32V	50 A	2 A	3.8 A	3 s	45 mOhms	110 mOhms	-	-40°C ~ 125°C	AEC-Q200	Through Hole	Radial, Disc	0.370" Dia x 0.118" T (9.40mm x 3.00mm)	0.551" (14.00mm)	-	0.201" (5.10mm)
	0ZRE0075FF1A PTC RESET FUSE 240V 750MA RADIAL Bel Fuse Inc.	1,046	$0.87		0ZRE	Bulk	Active	Polymeric	240V	7.5 A	750 mA	1.5 A	18 s	320 mOhms	-	-	-40°C ~ 85°C	AEC-Q200	Through Hole	Radial, Disc	0.453" L x 0.189" W (11.50mm x 4.80mm)	0.921" (23.40mm)	-	0.201" (5.10mm)
	0603L025YR PTC RESET FUSE 9V 250MA 0603 Littelfuse Inc.	959	$1.00		POLY-FUSE®, 0603L	Tape & Reel (TR)	Active	Polymeric	9V	40 A	250 mA	550 mA	80 ms	500 mOhms	3 Ohms	-	-40°C ~ 85°C	-	Surface Mount	0603 (1608 Metric), Concave	0.063" L x 0.032" W (1.60mm x 0.80mm)	-	0.030" (0.75mm)	-
	0ZRS0200FF1E PTC RESET FUSE 32V 2A RADIAL Bel Fuse Inc.	429	$0.89		0ZRS	Bulk	Active	Ceramic	32V	100 A	2 A	4 A	5.5 s	65 mOhms	250 mOhms	-	-40°C ~ 125°C	AEC-Q200	Through Hole	Radial, Disc	0.374" L x 0.118" W (9.50mm x 3.00mm)	0.531" (13.50mm)	-	0.201" (5.10mm)