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
	MF-R025 PTC RESET FUSE 60V 250MA RADIAL Bourns Inc.	422	$0.60		Multifuse®, MF-R	Bulk	Active	Polymeric	60V	40 A	250 mA	500 mA	2.5 s	1 Ohms	3 Ohms	-	-40°C ~ 85°C	-	Through Hole	Radial, Disc	0.291" Dia x 0.122" T (7.40mm x 3.10mm)	0.500" (12.70mm)	-	0.201" (5.10mm)
	MF-R020 PTC RESET FUSE 60V 200MA RADIAL Bourns Inc.	906	$0.60		Multifuse®, MF-R	Bulk	Active	Polymeric	60V	40 A	200 mA	400 mA	2.2 s	1.5 Ohms	4.4 Ohms	-	-40°C ~ 85°C	-	Through Hole	Radial, Disc	0.291" Dia x 0.122" T (7.40mm x 3.10mm)	0.500" (12.70mm)	-	0.201" (5.10mm)
	30R300UU PTC RESET FUSE 30V 3A RADIAL Littelfuse Inc.	281	$0.61		POLY-FUSE®, 30R	Bulk	Active	Polymeric	30V	40 A	3 A	6 A	10.8 s	20 mOhms	80 mOhms	-	-40°C ~ 85°C	-	Through Hole	Radial, Disc	0.449" L x 0.118" W (11.40mm x 3.00mm)	0.756" (19.20mm)	-	0.201" (5.10mm)
	MF-R065 PTC RESET FUSE 60V 650MA RADIAL Bourns Inc.	517	$0.62		Multifuse®, MF-R	Bulk	Active	Polymeric	60V	40 A	650 mA	1.3 A	5.3 s	270 mOhms	720 mOhms	-	-40°C ~ 85°C	-	Through Hole	Radial, Disc	0.382" Dia x 0.122" T (9.70mm x 3.10mm)	0.598" (15.20mm)	-	0.201" (5.10mm)
	RKEF185 PTC RESET FUSE 60V 1.85A RADIAL Littelfuse Inc.	965	$0.62		PolySwitch®, RKEF	Bag	Active	Polymeric	60V	40 A	1.85 A	3.7 A	12.6 s	60 mOhms	250 mOhms	-	-40°C ~ 85°C	-	Through Hole	Radial, Disc	0.512" L x 0.150" W (13.00mm x 3.81mm)	0.740" (18.80mm)	-	0.200" (5.08mm)
	MF-R090-0-9 PTC RESET FUSE 30V 900MA RADIAL Bourns Inc.	1,229	$0.63		Multifuse®, MF-R	Bulk	Active	Polymeric	30V	40 A	900 mA	1.8 A	5.9 s	70 mOhms	220 mOhms	-	-40°C ~ 85°C	-	Through Hole	Radial, Disc	0.291" L x 0.118" W (7.40mm x 3.00mm)	0.480" (12.20mm)	-	0.201" (5.10mm)
	MF-R075 PTC RESET FUSE 60V 750MA RADIAL Bourns Inc.	601	$0.62		Multifuse®, MF-R	Bulk	Active	Polymeric	60V	40 A	750 mA	1.5 A	6.3 s	180 mOhms	600 mOhms	-	-40°C ~ 85°C	-	Through Hole	Radial, Disc	0.409" Dia x 0.122" T (10.40mm x 3.10mm)	0.630" (16.00mm)	-	0.201" (5.10mm)
	MF-RX025/72-0 PTC RESET FUSE 72V 250MA RADIAL Bourns Inc.	336	$0.64		Multifuse®, MF-RX/72	Bulk	Active	Polymeric	72V	40 A	250 mA	500 mA	2.5 s	1 Ohms	3 Ohms	-	-40°C ~ 85°C	-	Through Hole	Radial, Disc	0.291" Dia x 0.122" T (7.40mm x 3.10mm)	0.500" (12.70mm)	-	0.201" (5.10mm)
	30R400UF PTC RESET FUSE 30V 4A RADIAL Littelfuse Inc.	967	$0.62		POLY-FUSE®, 30R	Bulk	Active	Polymeric	30V	40 A	4 A	8 A	12.7 s	10 mOhms	50 mOhms	-	-40°C ~ 85°C	-	Through Hole	Radial, Disc	0.551" L x 0.118" W (14.00mm x 3.00mm)	0.866" (22.00mm)	-	0.201" (5.10mm)
	MF-R135 PTC RESET FUSE 30V 1.35A RADIAL Bourns Inc.	1,266	$0.63		Multifuse®, MF-R	Bulk	Active	Polymeric	30V	40 A	1.35 A	2.7 A	7.3 s	65 mOhms	170 mOhms	-	-40°C ~ 85°C	-	Through Hole	Radial, Disc	0.350" Dia x 0.118" T (8.90mm x 3.00mm)	0.744" (18.90mm)	-	0.201" (5.10mm)
	0ZCF0400FF2A PTC RESET FUSE 16V 4A 2920 Bel Fuse Inc.	578	$1.40		0ZCF	Tape & Reel (TR)	Active	Polymeric	16V	100 A	4 A	8 A	4 s	10 mOhms	40 mOhms	-	-40°C ~ 85°C	AEC-Q200	Surface Mount	2920 (7351 Metric), Concave	0.290" L x 0.202" W (7.36mm x 5.12mm)	-	0.059" (1.50mm)	-
	TR600-150F-EX-2 PTC RESET FUSE 250V 150MA RADIAL Littelfuse Inc.	224	$1.22		PolySwitch®, TR600	Tape & Reel (TR)	Active	Polymeric	250V (600V Int)	40 A	150 mA	300 mA	8 s	6 Ohms	22 Ohms	-	-40°C ~ 85°C	-	Through Hole	Radial, Disc	0.532" Dia x 0.236" T (13.50mm x 6.00mm)	0.496" (12.60mm)	-	0.197" (5.00mm)
	MF-RX185/72-0-14 PTC RESET FUSE 72V 1.85A RADIAL Bourns Inc.	1,422	$0.65		Multifuse®, MF-RX/72	Bulk	Active	Polymeric	72V	40 A	1.85 A	3.7 A	12.6 s	80 mOhms	190 mOhms	-	-40°C ~ 85°C	-	Through Hole	Radial, Disc	0.701" L x 0.122" W (17.80mm x 3.10mm)	0.902" (22.90mm)	-	0.201" (5.10mm)
	16R400GU PTC RESET FUSE 16V 4A RADIAL Littelfuse Inc.	49	$0.65		POLY-FUSE®, 16R	Bulk	Active	Polymeric	16V	100 A	4 A	6.8 A	1.7 s	21 mOhms	60 mOhms	-	-40°C ~ 85°C	-	Through Hole	Radial, Disc	0.350" L x 0.118" W (8.90mm x 3.00mm)	0.504" (12.80mm)	-	0.201" (5.10mm)
	0ZRP0250FF1A PTC RESET FUSE 60V 2.5A RADIAL Bel Fuse Inc.	426	$0.65		0ZRP	Bulk	Active	Polymeric	60V	40 A	2.5 A	5 A	15.6 s	40 mOhms	140 mOhms	-	-40°C ~ 85°C	AEC-Q200	Through Hole	Radial, Disc	0.551" L x 0.142" W (14.00mm x 3.60mm)	0.811" (20.60mm)	-	0.201" (5.10mm)
	CMF-RL10-0 PTC RESET FUSE 220V 150MA RADIAL Bourns Inc.	67	$0.65		CMF-RL	Bulk	Active	Ceramic	220V (600V Int)	3 A	150 mA	300 mA	450 ms	-	-	10 Ohms	-40°C ~ 125°C	-	Through Hole	Radial, Disc	0.374" L x 0.177" W (9.50mm x 4.50mm)	0.532" (13.50mm)	-	0.197" (5.00mm)
	30R500UF PTC RESET FUSE 30V 5A RADIAL Littelfuse Inc.	448	$0.67		POLY-FUSE®, 30R	Bulk	Active	Polymeric	30V	40 A	5 A	10 A	14.5 s	10 mOhms	50 mOhms	-	-40°C ~ 85°C	-	Through Hole	Radial, Disc	0.551" L x 0.118" W (14.00mm x 3.00mm)	1.008" (25.60mm)	-	0.402" (10.20mm)
	MF-S200 PTC RESET FUSE 30V 2A STRAP Bourns Inc.	433	$0.68		Multifuse®, MF-S	Bulk	Active	Polymeric	30V	100 A	2 A	4.4 A	4 s	30 mOhms	80 mOhms	-	-40°C ~ 85°C	-	User Defined	Strap	0.880" L x 0.417" W (22.35mm x 10.60mm)	-	0.043" (1.10mm)	-
	LVR005NK PTC RESET FUSE 240V 50MA RADIAL Littelfuse Inc.	1,297	$0.66		PolySwitch®, LVR	Bag	Active	Polymeric	240V (265V Int)	1 A	50 mA	120 mA	10 s	18.5 Ohms	65 Ohms	-	-20°C ~ 85°C	-	Through Hole	Radial, Disc	0.272" Dia x 0.181" T (6.90mm x 4.60mm)	0.476" (12.10mm)	-	0.200" (5.08mm)
	0ZRP0300FF1A PTC RESET FUSE 60V 3A RADIAL Bel Fuse Inc.	146	$0.68		0ZRP	Bulk	Active	Polymeric	60V	40 A	3 A	6 A	19.8 s	30 mOhms	80 mOhms	-	-40°C ~ 85°C	AEC-Q200	Through Hole	Radial, Disc	0.650" L x 0.142" W (16.50mm x 3.60mm)	0.835" (21.20mm)	-	0.201" (5.10mm)