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 (JPY) 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 9A 30V 100A Imax
Datasheet
1,652In Stock
Min.: 1
Mult.: 1
: 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
692In Stock
750Expected 8/18/2026
Min.: 1
Mult.: 1

RUEF PCB Mount Radial 9 A 30 VDC 18 A 100 A 20 mOhms - 40 C + 85 C 10.9 mm Bulk
Littelfuse Resettable Fuses - PPTC Polyswitch 1.3A 6V
Datasheet
884In Stock
Min.: 1
Mult.: 1
: 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
2,245In Stock
1,500Expected 10/27/2026
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
Littelfuse Resettable Fuses - PPTC Radial Lead 1.1A 16V 40A Imax
Datasheet
1,025In Stock
Min.: 1
Mult.: 1

RUSBF PCB Mount Radial 1.1 A 16 VDC 2.2 A 40 A 140 mOhms - 40 C + 85 C 5.8 mm Bulk
Littelfuse Resettable Fuses - PPTC Radial Lead 1.2A 6V 40A Imax
Datasheet
425In Stock
Min.: 1
Mult.: 1

RUSBF PCB Mount Radial 1.2 A 6 VDC 2 A 40 A 140 mOhms - 40 C + 85 C 5.9 mm Bulk
Littelfuse Resettable Fuses - PPTC Radial Lead 1.35A 16V 40A Imax
Datasheet
333In Stock
Min.: 1
Mult.: 1

RUSBF PCB Mount Radial 1.35 A 16 VDC 2.7 A 40 A 120 mOhms - 40 C + 85 C 5.8 mm Bulk
Littelfuse Resettable Fuses - PPTC Radial Lead 1.35A 16V 40A Imax
Datasheet
985In Stock
Min.: 1
Mult.: 1
: 3,000

RUSBF PCB Mount Radial 1.35 A 16 VDC 2.7 A 40 A 120 mOhms - 40 C + 85 C 5.8 mm Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC 6V 40A 0.60W PolySwitch Reset Dev
Datasheet
1,943In Stock
Min.: 1
Mult.: 1
: 2,000

RUSBF PCB Mount Radial 1.55 A 6 V 2.65 A 40 A 100 mOhms - 40 C + 85 C Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC Radial Lead 1.6A 16V 40A Imax
Datasheet
129In Stock
Min.: 1
Mult.: 1

RUSBF PCB Mount Radial 1.6 A 16 VDC 3.2 A 40 A 110 mOhms - 40 C + 85 C 5.8 mm Bulk
Littelfuse Resettable Fuses - PPTC Radial Lead 1.85A 16V 40A Imax
Datasheet
475In Stock
Min.: 1
Mult.: 1

RUSBF PCB Mount Radial 1.85 A 16 VDC 3.7 A 40 A 90 mOhms - 40 C + 85 C 5.8 mm Bulk
Littelfuse Resettable Fuses - PPTC Radial Lead 2.5A 16V 40A Imax
Datasheet
533In Stock
Min.: 1
Mult.: 1

RUSBF PCB Mount Radial 2.5 A 16 VDC 5 A 40 A 60 mOhms - 40 C + 85 C 5.8 mm Bulk
Littelfuse Resettable Fuses - PPTC Polyswitch 0.2A 60V
Datasheet
Product Comments
378In Stock
Min.: 1
Mult.: 1

RXEF PCB Mount Radial 100 mA 60 VDC 200 mA 40 A 7.5 Ohms - 40 C + 85 C 5.8 mm Bulk
Littelfuse Resettable Fuses - PPTC .1A 60V 40A Imax
Datasheet
Product Comments
834In Stock
Min.: 1
Mult.: 1
: 2,000

RXEF PCB Mount Radial 100 mA 60 VDC 200 mA 40 A 7.5 Ohms - 40 C + 85 C 5.8 mm Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC Radial Lead .1A 60V 40A Imax
Datasheet
Product Comments
240In Stock
1,500Expected 8/18/2026
Min.: 1
Mult.: 1

RXEF PCB Mount Radial 100 mA 60 VDC 200 mA 40 A 7.5 Ohms - 40 C + 85 C 5.8 mm Bulk
Littelfuse Resettable Fuses - PPTC Radial Lead .17A 60V 40A Imax
Datasheet
Product Comments
3,527In Stock
Min.: 1
Mult.: 1
: 2,500

RXEF PCB Mount Radial 170 mA 60 VDC 340 mA 40 A 8 Ohms - 40 C + 85 C 5.8 mm Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC Radial Lead .2A 72V 40A Imax
Datasheet
Product Comments
2,895In Stock
3,000Expected 10/12/2026
Min.: 1
Mult.: 1
: 3,000

RXEF PCB Mount Radial 200 mA 72 VDC 400 mA 40 A 4.4 Ohms - 40 C + 85 C 5.8 mm Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC 72V 200MA 40A RXEF
Datasheet
Product Comments
1,670In Stock
Min.: 1
Mult.: 1
: 2,000

RXEF PCB Mount Radial 200 mA 72 VDC 400 mA 40 A 4.4 Ohms - 40 C + 85 C 5.8 mm Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC Radial Lead .2A 72V 40A Imax
Datasheet
Product Comments
566In Stock
Min.: 1
Mult.: 1

RXEF PCB Mount Radial 200 mA 72 VDC 400 mA 40 A 4.4 Ohms - 40 C + 85 C 5.8 mm Bulk
Littelfuse Resettable Fuses - PPTC Radial Lead .2A 72V 40A Imax
Datasheet
Product Comments
1,235In Stock
Min.: 1
Mult.: 1
: 3,000

RXEF PCB Mount Radial 200 mA 72 VDC 400 mA 40 A 4.4 Ohms - 40 C + 85 C 5.8 mm Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC Radial Lead .3A 72V 40A Imax
Datasheet
Product Comments
3,286In Stock
6,000Expected 12/2/2026
Min.: 1
Mult.: 1
: 3,000

RXEF PCB Mount Radial 300 mA 72 VDC 600 mA 40 A 2.1 Ohms - 40 C + 85 C 5.8 mm Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC 72V 300MA 40A RXEF
Datasheet
Product Comments
1,080In Stock
Min.: 1
Mult.: 1
: 2,000

RXEF PCB Mount Radial 300 mA 72 VDC 600 mA 40 A 2.1 Ohms - 40 C + 85 C 5.8 mm Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC Radial Lead .3A 72V 40A Imax
Datasheet
Product Comments
2,000In Stock
Min.: 1
Mult.: 1

RXEF PCB Mount Radial 300 mA 72 VDC 600 mA 40 A 2.1 Ohms - 40 C + 85 C 5.8 mm Bulk
Littelfuse Resettable Fuses - PPTC Radial Lead .3A 72V 40A Imax
Datasheet
Product Comments
2,970In Stock
Min.: 1
Mult.: 1
: 3,000

RXEF PCB Mount Radial 300 mA 72 VDC 600 mA 40 A 2.1 Ohms - 40 C + 85 C 5.8 mm Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC Radial Lead .4A 72V 40A Imax
Datasheet
Product Comments
82In Stock
6,000Expected 9/28/2026
Min.: 1
Mult.: 1
: 3,000

RXEF PCB Mount Radial 400 mA 72 VDC 800 mA 40 A 1.29 Ohms - 40 C + 85 C 5.8 mm Reel, Cut Tape