PTC Resettable Fuses

Browse available PTC Resettable Fuses part numbers with manufacturer references, stock information, pricing, datasheets and key specifications. Use the table below to compare options for your project.

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Mfr. Part #	Availability	Price	Quantity	Datasheet	Package/Case	Series	Packaging	Product Status	Type	Voltage - Max	Current - Hold (Ih) (Max)	Current - Trip (It)	Current - Max	Time to Trip	Resistance - Initial (Ri) (Min)	Resistance - Post Trip (R1) (Max)	Resistance - 25°C (Typ)	Operating Temperature	Grade	Qualification	Ratings	Mounting Type	Size / Dimension	Height - Seated (Max)	Thickness (Max)	Lead Spacing
MF-R900-0-99 PTC RESET FUSE 30V 9A RADIAL Bourns Inc.	8,005	-	RFQ	Datasheet	Radial, Disc	Multifuse®, MF-R	Bulk	Obsolete	Polymeric	30V	9 A	18 A	40 A	20 s	5 mOhms	20 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.953" L x 0.118" W (24.20mm x 3.00mm)	1.295" (32.90mm)	-	0.402" (10.20mm)
MF-RX012/250-2-0 PTC RESET FUSE 60V 120MA RADIAL Bourns Inc.	4,491	-	RFQ	Datasheet	Radial, Disc	Multifuse®, MF-RX/250	Bulk	Discontinued at Digi-Key	Polymeric	60V (250V Int)	120 mA	-	3 A	-	8 Ohms	16 Ohms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.256" L x 0.181" W (6.50mm x 4.60mm)	0.433" (11.00mm)	-	0.201" (5.10mm)
MF-RX110-005 PTC RESET FUSE 60V 1.1A RADIAL Bourns Inc.	4,442	-	RFQ	Datasheet	Radial, Disc	Multifuse®, MF-RX	Bulk	Active	Polymeric	60V	1.1 A	2.2 A	40 A	8.2 s	150 mOhms	380 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.427" L x 0.122" W (10.84mm x 3.10mm)	0.662" (16.84mm)	-	0.201" (5.10mm)
MF-RX135-0-99 PTC RESET FUSE 60V 1.35A RADIAL Bourns Inc.	6,737	-	RFQ	Datasheet	Radial, Disc	Multifuse®, MF-RX	Bulk	Obsolete	Polymeric	60V	1.35 A	2.7 A	40 A	9.6 s	120 mOhms	300 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.483" L x 0.122" W (12.26mm x 3.10mm)	0.718" (18.26mm)	-	0.201" (5.10mm)
MF-RX135-0-H2 PTC RESET FUSE 60V 1.35A RADIAL Bourns Inc.	2,358	-	RFQ	Datasheet	Radial, Disc	Multifuse®, MF-RX	Bulk	Active	Polymeric	60V	1.35 A	2.7 A	40 A	9.6 s	120 mOhms	300 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.483" L x 0.122" W (12.26mm x 3.10mm)	0.718" (18.26mm)	-	0.201" (5.10mm)
MF-RX160-0-99 PTC RESET FUSE 60V 1.6A RADIAL Bourns Inc.	5,582	-	RFQ	Datasheet	Radial, Disc	Multifuse®, MF-RX	Bulk	Obsolete	Polymeric	60V	1.6 A	3.2 A	40 A	11.4 s	90 mOhms	220 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.642" L x 0.122" W (16.30mm x 3.10mm)	0.839" (21.30mm)	-	0.201" (5.10mm)
MF-RX185-005 PTC RESET FUSE 60V 1.85A RADIAL Bourns Inc.	2,835	-	RFQ	Datasheet	Radial, Disc	Multifuse®, MF-RX	Bulk	Active	Polymeric	60V	1.85 A	3.7 A	40 A	12.6 s	80 mOhms	190 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.701" L x 0.122" W (17.80mm x 3.10mm)	0.902" (22.90mm)	-	0.201" (5.10mm)
MF-RX185-0-14 PTC RESET FUSE 60V 1.85A RADIAL Bourns Inc.	3,430	-	RFQ	Datasheet	Radial, Disc	Multifuse®, MF-RX	Bulk	Obsolete	Polymeric	60V	1.85 A	3.7 A	40 A	12.6 s	80 mOhms	190 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.701" L x 0.122" W (17.80mm x 3.10mm)	0.902" (22.90mm)	-	0.201" (5.10mm)
MF-RX185-0-99 PTC RESET FUSE 60V 1.85A RADIAL Bourns Inc.	6,646	-	RFQ	Datasheet	Radial, Disc	Multifuse®, MF-RX	Bulk	Obsolete	Polymeric	60V	1.85 A	3.7 A	40 A	12.6 s	80 mOhms	190 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.701" L x 0.122" W (17.80mm x 3.10mm)	0.902" (22.90mm)	-	0.201" (5.10mm)
MF-RX185-2 PTC RESET FUSE 60V 1.85A RADIAL Bourns Inc.	4,940	-	RFQ	Datasheet	Radial, Disc	Multifuse®, MF-RX	Tape & Reel (TR)	Obsolete	Polymeric	60V	1.85 A	3.7 A	40 A	12.6 s	80 mOhms	190 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.701" L x 0.122" W (17.80mm x 3.10mm)	0.902" (22.90mm)	-	0.201" (5.10mm)
MF-RX250-0-99 PTC RESET FUSE 60V 2.5A RADIAL Bourns Inc.	2,764	-	RFQ	Datasheet	Radial, Disc	Multifuse®, MF-RX	Bulk	Obsolete	Polymeric	60V	2.5 A	5 A	40 A	15.6 s	50 mOhms	130 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.839" L x 0.122" W (21.30mm x 3.10mm)	1.039" (26.40mm)	-	0.402" (10.20mm)
MF-RX300-005 PTC RESET FUSE 60V 3A RADIAL Bourns Inc.	4,999	-	RFQ	Datasheet	Radial, Disc	Multifuse®, MF-RX	Bulk	Active	Polymeric	60V	3 A	6 A	40 A	19.8 s	40 mOhms	100 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.980" L x 0.122" W (24.90mm x 3.10mm)	1.181" (30.00mm)	-	0.402" (10.20mm)
MF-RX375-005 PTC RESET FUSE 60V 3.75A RADIAL Bourns Inc.	6,703	-	RFQ	Datasheet	Radial, Disc	Multifuse®, MF-RX	Bulk	Active	Polymeric	60V	3.75 A	7.5 A	40 A	24 s	30 mOhms	80 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	1.118" L x 0.122" W (28.40mm x 3.10mm)	1.319" (33.50mm)	-	0.402" (10.20mm)
MF-RX375-0-99 PTC RESET FUSE 60V 3.75A RADIAL Bourns Inc.	8,520	-	RFQ	Datasheet	Radial, Disc	Multifuse®, MF-RX	Bulk	Obsolete	Polymeric	60V	3.75 A	7.5 A	40 A	24 s	30 mOhms	80 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	1.118" L x 0.122" W (28.40mm x 3.10mm)	1.319" (33.50mm)	-	0.402" (10.20mm)
MF-R010-AP-99 PTC RESET FUSE 60V 100MA RADIAL Bourns Inc.	4,490	-	RFQ	Datasheet	Radial, Disc	Multifuse®, MF-R	Tape & Box (TB)	Obsolete	Polymeric	60V	100 mA	200 mA	40 A	4 s	2.5 Ohms	7.5 Ohms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.291" Dia x 0.122" T (7.40mm x 3.10mm)	0.500" (12.70mm)	-	0.201" (5.10mm)
MF-R017-AP-99 PTC RESET FUSE 60V 170MA RADIAL Bourns Inc.	2,892	-	RFQ	Datasheet	Radial, Disc	Multifuse®, MF-R	Tape & Box (TB)	Obsolete	Polymeric	60V	170 mA	340 mA	40 A	3 s	2 Ohms	8 Ohms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.291" Dia x 0.122" T (7.40mm x 3.10mm)	0.500" (12.70mm)	-	0.201" (5.10mm)
MF-R020-AP-99 PTC RESET FUSE 60V 200MA RADIAL Bourns Inc.	6,991	-	RFQ	Datasheet	Radial, Disc	Multifuse®, MF-R	Tape & Box (TB)	Obsolete	Polymeric	60V	200 mA	400 mA	40 A	2.2 s	1.5 Ohms	4.4 Ohms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.291" Dia x 0.122" T (7.40mm x 3.10mm)	0.500" (12.70mm)	-	0.201" (5.10mm)
MF-R030-AP-99 PTC RESET FUSE 60V 300MA RADIAL Bourns Inc.	8,277	-	RFQ	Datasheet	Radial, Disc	Multifuse®, MF-R	Tape & Box (TB)	Obsolete	Polymeric	60V	300 mA	600 mA	40 A	3 s	760 mOhms	2.1 Ohms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.291" Dia x 0.122" T (7.40mm x 3.10mm)	0.528" (13.40mm)	-	0.201" (5.10mm)
MF-R040-AP-99 PTC RESET FUSE 60V 400MA RADIAL Bourns Inc.	2,412	-	RFQ	Datasheet	Radial, Disc	Multifuse®, MF-R	Tape & Box (TB)	Obsolete	Polymeric	60V	400 mA	800 mA	40 A	3.8 s	520 mOhms	1.29 Ohms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.291" Dia x 0.122" T (7.40mm x 3.10mm)	0.539" (13.70mm)	-	0.201" (5.10mm)
MF-R050-AP-99 PTC RESET FUSE 60V 500MA RADIAL Bourns Inc.	9,233	-	RFQ	Datasheet	Radial, Disc	Multifuse®, MF-R	Tape & Box (TB)	Obsolete	Polymeric	60V	500 mA	1 A	40 A	4 s	410 mOhms	1.17 Ohms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.311" Dia x 0.122" T (7.90mm x 3.10mm)	0.539" (13.70mm)	-	0.201" (5.10mm)

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PTC Resettable Fuses FAQ

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