Multifuse® PTC Resettable Fuses

Bourns Multifuse® PTC Resettable Fuses are available in polymer or ceramic with surface-mount, through-hole, or strap-mount configurations. The materials used in these fuses allow them to reset after a fault condition has been removed, and the increase in resistance changes exponentially rather than in a linear manner. Resettable overcurrent protection offers reliability and a longer part life. Bourns Multifuse PTCs provide resettable overcurrent protection, extra-low resistance, and are RoHS compliant. These fuses are ideal circuit protection for a variety of industrial and consumer applications, including computer, battery, automotive, and telecommunications.

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Description Datasheet Availability Pricing (IDR) 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 240V .4A-HD 5.5A MAX
Datasheet
3.849In Stock
Min.: 1
Mult.: 1
: 4.000

MF-RM PCB Mount Radial 400 mA 240 VAC 900 mA 5.5 A 1.9 Ohms - 20 C + 85 C 5.1 mm Reel, Cut Tape
Bourns Resettable Fuses - PPTC 240V .55A-HD 7A MAX
Datasheet
3.229In Stock
Min.: 1
Mult.: 1
: 4.000

MF-RM PCB Mount Radial 550 mA 240 VAC 1.25 A 7 A 1.45 Ohms - 20 C + 85 C 5.1 mm Reel, Cut Tape
Bourns Resettable Fuses - PPTC PTC RESETTABLE 0.65A 72V RADIAL LEADED
Datasheet
10.380In Stock
Min.: 1
Mult.: 1
: 3.000

MF-RX/72 PCB Mount Radial 650 mA 72 VDC 1.3 A 480 mOhms - 40 C + 85 C 10.2 mm Reel, Cut Tape
Bourns Resettable Fuses - PPTC PTC RESETTABLE 0.75A 72V RADIAL LEADED
Datasheet
11.965In Stock
Min.: 1
Mult.: 1
: 3.000

MF-RX/72 PCB Mount Radial 750 mA 72 VDC 1.5 A 400 mOhms - 40 C + 85 C 5.1 mm Reel, Cut Tape
Bourns Resettable Fuses - PPTC 72V 1.1A-HD 40A MAX
Datasheet
20.474In Stock
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 1.35A-HD 40A MAX
Datasheet
10.233In Stock
Min.: 1
Mult.: 1
: 3.000

MF-RX/72 PCB Mount Radial 1.35 A 72 VDC 2.7 A 40 A 190 mOhms - 40 C + 85 C 5.1 mm Reel, Cut Tape
Bourns Resettable Fuses - PPTC 72V 1.6A-HD 40A MAX
Datasheet
12.587In Stock
Min.: 1
Mult.: 1
: 3.000

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 Reel, Cut Tape
Bourns Resettable Fuses - PPTC 72V 1.85A-HD 40A MAX
Datasheet
12.099In Stock
Min.: 1
Mult.: 1
: 3.000

MF-RX/72 PCB Mount Radial 1.85 A 72 VDC 3.7 A 40 A 120 mOhms - 40 C + 85 C 5.1 mm Reel, Cut Tape
Bourns Resettable Fuses - PPTC 72V 3A-HD 40A MAX
Datasheet
5.296In Stock
Min.: 1
Mult.: 1

MF-RX/72 PCB Mount Radial 3 A 72 VDC 6 A 40 A 60 mOhms - 40 C + 85 C 10.2 mm Bulk
Bourns Resettable Fuses - PPTC 250V 130MA-HD 3A MAX
Datasheet
Product Comments
11.074In Stock
15.000Expected 21/10/2026
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

MF-SM/250 SMD/SMT SMD/SMT 130 mA 60 VDC 3 A 12 Ohms - 40 C + 85 C Reel, Cut Tape, MouseReel
Bourns Resettable Fuses - PPTC 250V 130MA-HD 3A MAX
Datasheet
7.543In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.000

MF-SM013/250V SMD/SMT SMD/SMT 130 mA 60 VDC 3 A 7 Ohms - 40 C + 85 C Reel, Cut Tape, MouseReel
Bourns Resettable Fuses - PPTC 60V 300MA-HD 10A MAX
Datasheet
Product Comments
25.773In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4.000

MF-SM SMD/SMT SMD/SMT 300 mA 60 VDC 600 mA 40 A 4.8 Ohms 2920 (7450 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Bourns Resettable Fuses - PPTC 33V 1.8A-HD 40A MAX
Datasheet
Product Comments
12.737In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

MF-SM SMD/SMT SMD/SMT 1.8 A 33 VDC 3.6 A 40 A 150 mOhms 3425 (8764 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Bourns Resettable Fuses - PPTC PTC RESETTABLE 1.1A 33V SMD 2018
Datasheet
6.833In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 6.000

MF-SMDF PCB Mount SMD/SMT 1.1 A 33 VDC 2.2 A 40 A 400 mOhms - 40 C + 85 C Reel, Cut Tape, MouseReel
Bourns Resettable Fuses - PPTC 30V 500MA-HD 20A MAX
Datasheet
22.013In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

MF-USHT SMD/SMT SMD/SMT 500 mA 30 VDC 2.5 A 20 A 1.6 Ohms 1210 (3225 metric) - 20 C + 125 C AEC-Q200 Reel, Cut Tape, MouseReel
Bourns Resettable Fuses - PPTC 13V 500MA-HD 40A MAX
Datasheet
10.697In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

MF-USMF SMD/SMT SMD/SMT 500 mA 13.2 VDC 1 A 40 A 900 mOhms 1210 (3225 metric) - 40 C + 85 C AEC-Q100 Reel, Cut Tape, MouseReel
Bourns Resettable Fuses - PPTC 6V 750MA-HD 40A MAX
Datasheet
12.801In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

MF-USMF SMD/SMT SMD/SMT 750 mA 6 VDC 1.5 A 40 A 450 mOhms 1210 (3225 metric) - 40 C + 85 C AEC-Q100 Reel, Cut Tape, MouseReel
Bourns Resettable Fuses - PPTC 6V 1.1A-HD 40A MAX
Datasheet
24.684In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

MF-USMF SMD/SMT SMD/SMT 1.1 A 6 VDC 2.2 A 40 A 210 mOhms 1210 (3225 metric) - 40 C + 85 C AEC-Q100 Reel, Cut Tape, MouseReel
Bourns Resettable Fuses - PPTC PTC RESETTABLE 1.5A 6V SMD 1210
Datasheet
11.774In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

MF-USMF SMD/SMT SMD/SMT 1.5 A 6 VDC 3 A 40 A 110 mOhms 1210 (3225 metric) - 40 C + 85 C AEC-Q100 Reel, Cut Tape, MouseReel
Bourns Resettable Fuses - PPTC 6V 350MA-HD 40A MAX
Datasheet
10.460In Stock
18.000Expected 08/09/2026
MouseReel Available
Min.: 1
Mult.: 1
: 6.000

MF-FSMF PCB Mount SMD/SMT 350 mA 6 VDC 750 mA 40 A 1.4 Ohms - 40 C + 85 C Reel, Cut Tape, MouseReel
Bourns Resettable Fuses - PPTC 6V 500MA-HD 40A MAX
Datasheet
74.764In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4.000

MF-FSMF PCB Mount SMD/SMT 500 mA 6 VDC 1 A 40 A 800 mOhms - 40 C + 85 C Reel, Cut Tape, MouseReel
Bourns Resettable Fuses - PPTC 60V .2A-HD 40A MAX
Datasheet
13.121In Stock
Min.: 1
Mult.: 1

MF-R PCB Mount Radial 200 mA 60 VDC 400 mA 40 A 2.84 Ohms - 40 C + 85 C 5.1 mm Bulk
Bourns Resettable Fuses - PPTC 60V .4A-HD 40A MAX
Datasheet
10.809In Stock
Min.: 1
Mult.: 1

MF-R PCB Mount Radial 400 mA 60 VDC 800 mA 40 A 860 mOhms - 40 C + 85 C 5.1 mm Bulk
Bourns Resettable Fuses - PPTC 60V .75A-HD 40A MAX
Datasheet
11.015In Stock
Min.: 1
Mult.: 1

MF-R PCB Mount Radial 750 mA 60 VDC 1.5 A 40 A 400 mOhms - 40 C + 85 C 5.1 mm Bulk
Bourns Resettable Fuses - PPTC 60V .9A-HD 40A MAX
Datasheet
10.246In Stock
Min.: 1
Mult.: 1

MF-R/90 PCB Mount Radial 900 mA 60 VDC 1.8 A 40 A 310 mOhms - 40 C + 85 C 5.1 mm Bulk