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 1.35A 30V 40A Imax
Datasheet
4 420In Stock
Min.: 1
Mult.: 1
: 3 000

RUEF PCB Mount Radial 1.35 A 30 VDC 2.7 A 40 A 130 mOhms - 40 C + 85 C 5.8 mm Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC 30V 1.35A-HD 100A RUEF
Datasheet
2 910In Stock
Min.: 1
Mult.: 1
: 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
2 106In Stock
3 000Expected 14/10/2026
Min.: 1
Mult.: 1
: 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
679In 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
551In 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 1.85A 30V 40A Imax
Datasheet
390In 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
297In Stock
24 000Expected 10/11/2026
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
1 233In Stock
4 000Expected 28/12/2026
Min.: 1
Mult.: 1
: 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
212In Stock
500Expected 30/12/2026
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 2.5A 30V 100A Imax UNCOATED
Datasheet
2 251In 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 3A 30V 100A Imax
Datasheet
2 275In Stock
Min.: 1
Mult.: 1
: 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 80 mOhms 40 A 30 VDC - 40 C+ 85 C
Datasheet
185In Stock
Min.: 1
Mult.: 1

RUEF PCB Mount Radial 3 A 30 VDC 6 A 40 A 80 mOhms - 40 C + 85 C 5.8 mm Bulk
Littelfuse Resettable Fuses - PPTC 3A 30V 100A Imax
Datasheet
1 217In Stock
2 500Expected 01/09/2026
Min.: 1
Mult.: 1
: 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 4A 30V 40A Imax
Datasheet
921In Stock
Min.: 1
Mult.: 1

RUEF PCB Mount Radial 4 A 30 VDC 8 A 40 A 50 mOhms - 40 C + 85 C 5.8 mm Bulk
Littelfuse Resettable Fuses - PPTC 30V 4A-HD 100A RUEF
Datasheet
789In Stock
1 000Expected 14/12/2026
Min.: 1
Mult.: 1
: 1 000

RUEF PCB Mount Radial 4 A 30 VDC 8 A 100 A 50 mOhms - 40 C + 85 C 5.8 mm Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC 4A 30V 40A Imax
Datasheet
774In Stock
1 500Expected 08/09/2026
Min.: 1
Mult.: 1

RUEF PCB Mount Radial 4 A 30 VDC 8 A 100 A 50 mOhms - 40 C + 85 C 5.8 mm Bulk
Littelfuse Resettable Fuses - PPTC 5A 30V 40A Imax
Datasheet
1 206In Stock
Min.: 1
Mult.: 1

RUEF PCB Mount Radial 5 A 30 VDC 10 A 100 A 50 mOhms - 40 C + 85 C 10.9 mm Bulk
Littelfuse Resettable Fuses - PPTC 5A 30V 100A Imax
Datasheet
3 374In Stock
1 500Expected 01/09/2026
Min.: 1
Mult.: 1
: 1 500

RUEF PCB Mount Radial 5 A 30 VDC 10 A 100 A 50 mOhms - 40 C + 85 C 10.9 mm Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC 5A 30V 40A Imax
Datasheet
1 595In Stock
1 000Expected 10/11/2026
Min.: 1
Mult.: 1

RUEF PCB Mount Radial 5 A 30 VDC 10 A 100 A 50 mOhms - 40 C + 85 C 10.9 mm Bulk
Littelfuse Resettable Fuses - PPTC 6A 30V 40A Imax
Datasheet
497In Stock
Min.: 1
Mult.: 1

RUEF PCB Mount Radial 6 A 30 V 12 A 40 A 40 mOhms - 40 C + 85 C Bulk
Littelfuse Resettable Fuses - PPTC 6A 30V 40A Imax
Datasheet
1 260In Stock
Min.: 1
Mult.: 1
: 1 000

RUEF PCB Mount Radial 6 A 30 VDC 12 A 40 A 40 mOhms - 40 C + 85 C 10.9 mm Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC 6A 30V 100A Imax
Datasheet
595In Stock
Min.: 1
Mult.: 1
: 1 000

RUEF PCB Mount Radial 6 A 30 VDC 12 A 100 A 40 mOhms - 40 C + 85 C 10.9 mm Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC 6A 30V 100A Imax
Datasheet
566In Stock
Min.: 1
Mult.: 1

RUEF PCB Mount Radial 6 A 30 VDC 12 A 100 A 40 mOhms - 40 C + 85 C 10.9 mm Bulk
Littelfuse Resettable Fuses - PPTC 6A 30V 40A Imax
Datasheet
1 934In Stock
Min.: 1
Mult.: 1
: 1 000

RUEF PCB Mount Radial 6 A 30 VDC 12 A 100 A 40 mOhms - 40 C + 85 C 10.9 mm Reel, Cut Tape