Radial-Leaded PolySwitch Resettable PPTCs

Littelfuse Radial-Leaded Resettable PPTCs are designed to provide overcurrent protection for applications where space is not a concern, and resettable protection is preferred. With so many options in the radial-leaded PPTCs family, engineers can design with more flexibility. The components feature current ratings from 50mA to 15A, low resistance, and a fast time-to-trip. Higher voltage ratings (6V to 72V) allow for use in new applications. Littelfuse Radial-Leaded Resettable PPTCs are compatible with high-volume electronics assembly and can assist in meeting regulatory requirements.

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Description Datasheet Availability Pricing (EUR) 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
Minimum Operating Temperature
Maximum Operating Temperature
Lead Spacing
Qualification
Packaging
Littelfuse Resettable Fuses - PPTC 60V 40A 2.60W Radial-leaded Device
Datasheet
5,013In Stock
Min.: 1
Mult.: 1

RKEF PCB Mount Radial 1.85 A 60 VDC 3.7 A 40 A 250 mOhms - 40 C + 85 C 5.84 mm Bulk
Littelfuse Resettable Fuses - PPTC 50 mOhms 40 A 60 VDC - 40 C+ 85 C
Datasheet
1,795In Stock
Min.: 1
Mult.: 1
Reel: 1,000

RKEF PCB Mount Radial 3 A 60 VDC 6 A 40 A 50 mOhms - 40 C + 85 C 5.84 mm Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC 60V 40A 3.40W Radial-leaded Device
Datasheet
801In Stock
Min.: 1
Mult.: 1

RKEF PCB Mount Radial 3.75 A 60 VDC 7.5 A 40 A 40 mOhms - 40 C + 85 C 10.9 mm Bulk
Littelfuse Resettable Fuses - PPTC 60V 3.75A-HD 40A MAX
Datasheet
99In Stock
250Expected 30/03/2026
Min.: 1
Mult.: 1

RKEF PCB Mount Radial 3.75 A 60 VDC 7.5 A 40 A 40 mOhms - 40 C + 85 C 10.9 mm Bulk
Littelfuse Resettable Fuses - PPTC 60V 40A 3.70W Radial-leaded Device
Datasheet
2,735In Stock
Min.: 1
Mult.: 1

RKEF PCB Mount Radial 4 A 60 VDC 8 A 40 A 60 mOhms - 40 C + 85 C 10.9 mm Bulk
Littelfuse Resettable Fuses - PPTC 60V 40A 5.00W Radial-leaded Device
Datasheet
155In Stock
6,050On Order
Min.: 1
Mult.: 1

RKEF PCB Mount Radial 5 A 60 VDC 10 A 40 A 50 mOhms - 40 C + 85 C 10.9 mm Bulk
Littelfuse Resettable Fuses - PPTC RKEF500K-2
Datasheet
944In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

RKEF + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .9A 30V 100A Imax
Datasheet
3,278In Stock
Min.: 1
Mult.: 1
Reel: 3,000

RUEF PCB Mount Radial 900 mA 30 VDC 1.8 A 100 A 220 mOhms - 40 C + 85 C 5.8 mm Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC 30V 900MA 100A RUEF
Datasheet
1,724In Stock
Min.: 1
Mult.: 1
Reel: 2,000

RUEF PCB Mount Radial 900 mA 30 VDC 1.8 A 100 A 220 mOhms - 40 C + 85 C 5.8 mm Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC 30V 1.1A-HD 100A RUEF
Datasheet
1,966In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,000

RUEF PCB Mount Radial 1.1 A 30 VDC 2.2 A 100 A 170 mOhms - 40 C + 85 C 5.8 mm Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 1.1A 30V 40A Imax
Datasheet
475In Stock
Min.: 1
Mult.: 1

RUEF PCB Mount Radial 1.1 A 30 VDC 2.2 A 100 A 170 mOhms - 40 C + 85 C 5.8 mm Bulk
Littelfuse Resettable Fuses - PPTC 30V 1.35A-HD 100A RUEF
Datasheet
2,937In Stock
Min.: 1
Mult.: 1
Reel: 2,000

RUEF PCB Mount Radial 1.35 A 30 VDC 2.7 A 100 A 130 mOhms - 40 C + 85 C 5.8 mm Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC 1.35A 30V 40A Imax
Datasheet
105In Stock
Min.: 1
Mult.: 1

RUEF PCB Mount Radial 1.35 A 30 VDC 2.7 A 100 A 130 mOhms - 40 C + 85 C 5.8 mm Bulk
Littelfuse Resettable Fuses - PPTC 1.6A 30V 40A Imax
Datasheet
5,367In Stock
Min.: 1
Mult.: 1
Reel: 3,000

RUEF PCB Mount Radial 1.6 A 30 VDC 3.2 A 100 A 110 mOhms - 40 C + 85 C 5.8 mm Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC 1.6A 30V 40A Imax
Datasheet
1,089In Stock
Min.: 1
Mult.: 1

RUEF PCB Mount Radial 1.6 A 30 VDC 3.2 A 100 A 110 mOhms - 40 C + 85 C 5.8 mm Bulk
Littelfuse Resettable Fuses - PPTC 1.85A 30V 100A Imax
Datasheet
202In Stock
500Expected 06/04/2026
Min.: 1
Mult.: 1

RUEF PCB Mount Radial 1.85 A 30 VDC 3.7 A 100 A 90 mOhms - 40 C + 85 C 5.8 mm Bulk
Littelfuse Resettable Fuses - PPTC 1.85A 30V 40A Imax
Datasheet
410In Stock
Min.: 1
Mult.: 1

RUEF PCB Mount Radial 1.85 A 30 VDC 3.7 A 100 A 90 mOhms - 40 C + 85 C 5.8 mm Bulk
Littelfuse Resettable Fuses - PPTC 2.5A 30V 100A Imax
Datasheet
4,524In Stock
2,500Expected 08/04/2026
Min.: 1
Mult.: 1

RUEF PCB Mount Radial 2.5 A 30 VDC 5 A 100 A 70 mOhms - 40 C + 85 C 5.8 mm Bulk
Littelfuse Resettable Fuses - PPTC 30V 2.5A-HD 100A RUEF
Datasheet
3,990In Stock
Min.: 1
Mult.: 1
Reel: 2,000

RUEF PCB Mount Radial 2.5 A 30 VDC 5 A 100 A 70 mOhms - 40 C + 85 C 5.8 mm Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC 2.5A 30V 100A Imax
Datasheet
276In Stock
Min.: 1
Mult.: 1

RUEF PCB Mount Radial 2.5 A 30 VDC 5 A 100 A 70 mOhms - 40 C + 85 C 5.8 mm Bulk
Littelfuse Resettable Fuses - PPTC 2.5A 30V 100A Imax UNCOATED
Datasheet
2,054In Stock
Min.: 1
Mult.: 1

RUEF PCB Mount Radial 2.5 A 30 VDC 4.9 A 100 A 80 mOhms - 40 C + 85 C 5.8 mm Bulk
Littelfuse Resettable Fuses - PPTC 2.5A 30V 40A Imax Uncoated
Datasheet
4,482In Stock
Min.: 1
Mult.: 1
Reel: 3,000

RUEF PCB Mount Radial 2.5 A 30 VDC 5 A 100 A 70 mOhms - 40 C + 85 C 5.8 mm Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC 3A 30V 100A Imax
Datasheet
4,696In Stock
Min.: 1
Mult.: 1
Reel: 2,500

RUEF PCB Mount Radial 3 A 30 VDC 6 A 100 A 80 mOhms - 40 C + 85 C 5.8 mm Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC 3A 30V 100A Imax
Datasheet
2,313In Stock
Min.: 1
Mult.: 1
Reel: 1,000

RUEF PCB Mount Radial 3 A 30 VDC 6 A 100 A 80 mOhms - 40 C + 85 C 5.8 mm Ammo Pack
Littelfuse Resettable Fuses - PPTC 3A 30V 100A Imax
Datasheet
3,713In Stock
Min.: 1
Mult.: 1
Reel: 2,500

RUEF PCB Mount Radial 3 A 30 VDC 6 A 100 A 80 mOhms - 40 C + 85 C 5.8 mm Reel, Cut Tape