PolySwitch Surface Mount Resettable PTCs

Littelfuse PolySwitch Surface-Mount (SMD) Resettable PTCs provide overcurrent protection for applications where space is at a premium, and resettable protection is desired. The components are reliable and capable of protecting computer and consumer electronics against temporary overcurrent faults. Package size varies from 0402 to 3425, while the current hold ranges from 50mA to 7.0A. The Littelfuse PolySwitch SMD product family is qualified to strict automotive standards (following the AECQ200 specification). As a result, these PTCs are suitable for protecting Electronic Control Units (ECUs) against damage from faults that would otherwise require costly, complete module replacement.

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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
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Minimum Operating Temperature
Maximum Operating Temperature
Qualification
Packaging
Littelfuse Resettable Fuses - PPTC 16V 5.00A Poly 2920 PTC
Datasheet
8.836In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

2920L SMD/SMT SMD/SMT 5 A 16 VDC 10 A 40 A 25 mOhms 2920 (7450 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 16V 5.0A-HD 40A SMD
Datasheet
1.202In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

2920L SMD/SMT SMD/SMT 5 A 16 V 10 A 40 A 25 mOhms 2920 (7450 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel

Littelfuse Resettable Fuses - PPTC 24V 5.0A-HD 50A SMD
Datasheet
1.664In Stock
15.000Expected 6/29/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1.500

Low Rho SMD/SMT SMD/SMT 5 A 24 VDC 10 A 50 A 18 mOhms 2920 (7450 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 12V 6.0A-HD 50A 2920
Datasheet
4.712In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

2920L SMD/SMT SMD/SMT 6 A 12 VDC 12 A 50 A 20 mOhms 2920 (7450 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 16V 6.0A-HD 22A SMD
Datasheet
4.518In Stock
6.000Expected 7/9/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

2920L SMD/SMT SMD/SMT 6 A 16 VDC 12 A 40 A 20 mOhms 2920 (7450 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel

Littelfuse Resettable Fuses - PPTC 24V 6.0A-HD 100A MAX
Datasheet
4.801In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

Low Rho SMD/SMT SMD/SMT 6 A 24 VDC 12 A 50 A 12 mOhms 2920 (7450 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC RF5030-000
Datasheet
5.256In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

nanoASMD SMD/SMT SMD/SMT 50 mA 30 VDC 150 mA 20 A 3.5 Ohms 1206 (3216 metric) - 40 C + 125 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 30V 160MA-HD 20A SMD
Datasheet
5.226In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

nanoASMDCH SMD/SMT SMD/SMT 160 mA 30 VDC 800 mA 20 A 700 mOhms 1206 (3216 metric) - 40 C + 125 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 30V 350MA-HD 20A SMD
Datasheet
7.151In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

nanoASMDCH SMD/SMT SMD/SMT 350 mA 30 VDC 1.75 A 20 A 400 mOhms 1206 (3216 metric) - 40 C + 125 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 24V 500MA-HD 20A SMD
Datasheet
15.916In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

nanoASMDCH SMD/SMT SMD/SMT 500 mA 24 VDC 2.5 A 20 A 200 mOhms 1206 (3216 metric) - 40 C + 125 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 16V 2.0A-HD 40A SMD
Datasheet
2.723In Stock
Min.: 1
Mult.: 1
: 2.000

miniASMD PCB Mount SMD/SMT 1812 (4532 metric) + 85 C Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC 60V 100MA-HD 10A SMD
Datasheet
16.479In Stock
Min.: 1
Mult.: 1

miniASMD SMD/SMT SMD/SMT 100 mA 60 VDC 250 mA 10 A 15 Ohms 1206 (3216 metric) - 40 C + 85 C
Littelfuse Resettable Fuses - PPTC 12V 750MA-HD 40A SMD
Datasheet
3.089In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3.000

Automotive SMD SMD/SMT SMD/SMT 750 mA 12 VDC 2.25 A 40 A 460 mOhms 1206 (3216 metric) - 40 C + 125 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .8A 16V HighTemp SMD AEC-Q200
Datasheet
6.459In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4.000

AHS SMD/SMT SMD/SMT 800 mA 16 VDC 2 A 70 A 130 mOhms 2018 (5050 metric) - 40 C + 125 C AEC-Q100 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .75A 33VDC 40A 2920 AEC-Q200
Datasheet
6.253In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4.000

ASMDC PCB Mount SMD/SMT 750 mA 33 VDC 1.5 A 40 A 610 mOhms - 40 C + 85 C AEC-Q200 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 1.25A 33VDC 40A 2920 AEC-Q200
Datasheet
8.351In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4.000

ASMDC PCB Mount SMD/SMT 1.25 A 33 VDC 2.5 A 40 A 250 mOhms - 40 C + 85 C AEC-Q200 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 1.85A 33VDC 40A 2920 AEC-Q200
Datasheet
5.468In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4.000

ASMDC SMD/SMT SMD/SMT 1.85 A 33 VDC 3.7 A 40 A 150 mOhms 2920 (7450 metric) - 40 C + 85 C AEC-Q200 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 3A 24VDC 40A 2920 AEC-Q200
Datasheet
5.016In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4.000

ASMDC PCB Mount SMD/SMT 3 A 24 VDC 6 A 40 A 72 mOhms - 40 C + 85 C AEC-Q200 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .1A 15VDC 10A 0603 AEC-Q200
Datasheet
4.102In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4.000

femtoASMD PCB Mount SMD/SMT 100 mA 15 VDC 300 mA 10 A 14 Ohms - 40 C + 85 C AEC-Q200 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .05A 15VDC 10A 0603 AEC-Q200
Datasheet
5.737In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4.000

femtoASMD PCB Mount SMD/SMT 50 mA 15 VDC 150 mA 10 A 30 Ohms - 40 C + 85 C AEC-Q200 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .08A 12VDC 10A 0603 AEC-Q200
Datasheet
6.806In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4.000

femtoASMD PCB Mount SMD/SMT 80 mA 12 VDC 200 mA 10 A 14 Ohms - 40 C + 85 C AEC-Q200 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 14 Ohms 40 A 12 VDC - 40 C+ 85 C
Datasheet
4.866In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4.000

femtoSMD + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 12V 100MA-HD 40A 0603
Datasheet
6.475In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4.000

femtoSMD PCB Mount SMD/SMT 100 mA 12 VDC 250 mA 40 A 8 Ohms - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC FEMTOSMDC010F/15-2
Datasheet
5.040In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4.000

femtoSMD SMD/SMT SMD/SMT 100 mA 15 VDC 250 mA 40 A 8 Ohms 0603 (1608 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 9V 160MA-HD 40A MAX
Datasheet
4.758In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 5.000

femtoSMD SMD/SMT SMD/SMT 160 mA 9 VDC 400 mA 40 A 4.2 Ohms 0603 (1608 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel