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 4A 30V 40A Imax
Datasheet
1.343In 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 4A 30V 100A Imax
Datasheet
3.321In Stock
Min.: 1
Mult.: 1
Reel: 1.500

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 30V 4A-HD 100A RUEF
Datasheet
810In Stock
1.000Expected 3/23/2026
Min.: 1
Mult.: 1
Reel: 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
668In Stock
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 4A 30V 100A Imax
Datasheet
1.440In Stock
1.500Expected 5/11/2026
Min.: 1
Mult.: 1
Reel: 1.500

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 5A 30V 40A Imax
Datasheet
1.469In 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
2.481In Stock
Min.: 1
Mult.: 1
Reel: 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
420In 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
3.600In Stock
Min.: 1
Mult.: 1
Reel: 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 6A 30V 40A Imax
Datasheet
500In 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
430In Stock
Min.: 1
Mult.: 1
Reel: 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
776In Stock
Min.: 1
Mult.: 1
Reel: 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
476In 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 7A 30V 100A Imax
Datasheet
3.226In Stock
5.000Expected 3/24/2026
Min.: 1
Mult.: 1

RUEF PCB Mount Radial 7 A 30 VDC 14 A 100 A 30 mOhms - 40 C + 85 C 10.9 mm Bulk
Littelfuse Resettable Fuses - PPTC 7A 30V 100A Imax
Datasheet
2.426In Stock
Min.: 1
Mult.: 1
Reel: 1.000

RUEF PCB Mount Radial 7 A 30 VDC 14 A 100 A 30 mOhms - 40 C + 85 C 10.9 mm Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC 7A 30V 100A Imax
Datasheet
329In Stock
Min.: 1
Mult.: 1

RUEF PCB Mount Radial 7 A 30 VDC 14 A 100 A 30 mOhms - 40 C + 85 C 10.9 mm Bulk
Littelfuse Resettable Fuses - PPTC 8A 30V 100A Imax
Datasheet
2.274In Stock
8.500Expected 2/20/2026
Min.: 1
Mult.: 1

RUEF PCB Mount Radial 8 A 30 VDC 16 A 100 A 20 mOhms - 40 C + 85 C 10.9 mm Bulk
Littelfuse Resettable Fuses - PPTC 8A 30V 40A Imax
Datasheet
1.730In Stock
Min.: 1
Mult.: 1
Reel: 1.000

RUEF PCB Mount Radial 8 A 30 VDC 16 A 100 A 20 mOhms - 40 C + 85 C 10.9 mm Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC 8A 30V 40A Imax
Datasheet
298In Stock
Min.: 1
Mult.: 1

RUEF PCB Mount Radial 8 A 30 VDC 16 A 100 A 20 mOhms - 40 C + 85 C 10.9 mm Bulk
Littelfuse Resettable Fuses - PPTC 8A 30V 40A Imax
Datasheet
1.283In Stock
Min.: 1
Mult.: 1
Reel: 1.000

RUEF PCB Mount Radial 8 A 30 VDC 16 A 100 A 20 mOhms - 40 C + 85 C 10.9 mm Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC 9A 30V 100A Imax
Datasheet
2.003In Stock
Min.: 1
Mult.: 1
Reel: 1.000

RUEF PCB Mount Radial 9 A 30 VDC 18 A 100 A 20 mOhms - 40 C + 85 C 10.9 mm Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC 9A 30V 40A Imax
Datasheet
579In Stock
1.000Expected 5/18/2026
Min.: 1
Mult.: 1
Reel: 1.000

RUEF PCB Mount Radial 9 A 30 VDC 18 A 100 A 20 mOhms - 40 C + 85 C 10.9 mm Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC Radial Lead .75A 6V 40A Imax
Datasheet
171In Stock
3.000On Order
Min.: 1
Mult.: 1
Reel: 3.000

RUSBF PCB Mount Radial 750 mA 6 VDC 1.3 A 40 A 230 mOhms - 40 C + 85 C 5.9 mm Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC Polyswitch 1.3A 6V
Datasheet
886In Stock
Min.: 1
Mult.: 1
Reel: 2.000

RUSBF PCB Mount Radial 750 mA 6 VDC 1.3 A 40 A 230 mOhms - 40 C + 85 C 5.9 mm Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC Radial Lead .9A 16V 40A Imax
Datasheet
1.050In Stock
Min.: 1
Mult.: 1

RUSBF PCB Mount Radial 900 mA 16 VDC 1.8 A 40 A 180 mOhms - 40 C + 85 C 5.8 mm Bulk