Automotive SMD Resettable Fuses

Littelfuse PolySwitch® Family of Automotive SMD Resettable PPTCs are designed to support the miniaturization trend in automotive electronics. These devices meet performance specifications for resistance, time-to-trip, and hold current at three temperatures (-40°C, 25°C, and max T). These parts are AEC-Q200 qualified, RoHS compliant, ELV compliant, lead free, and halogen free as well as ISO/TS16949 certified. ​Littelfuse automotive PPTCs provide current ratings from 0.05A to 3.0A and voltage ratings from 5VDC to 60VDC. These devices provide overcurrent and overtemperature protection for Electronic Control Units (ECUs), I/O ports and traces, telematics and infotainment systems, and motor and motor control circuits. Littelfuse Automotive SMD Resettable PPTCs are compatible with high-volume SMD assembly processes.

Results: 64
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Description Datasheet Availability Pricing (USD) 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
Package/Case
Minimum Operating Temperature
Maximum Operating Temperature
Qualification
Packaging
Littelfuse Resettable Fuses - PPTC RF5164-000 1210 0.5A 30VDC 1.5W 0.3Ohm
Datasheet
4,201In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

microASMD SMD/SMT SMD/SMT 500 mA 30 VDC 1.05 A 20 A 300 mOhms 1210 (3225 metric) - 40 C + 125 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC RF5034-000 1210 0.75A 16VDC 1.3W 0.1Ohm
Datasheet
9,811In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

microASMD SMD/SMT SMD/SMT 750 mA 16 VDC 2.25 A 20 A 100 mOhms 1210 (3225 metric) - 40 C + 125 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC RF5162-000 1210 0.2A 30VDC 0.8W 0.6Ohm
Datasheet
1,489In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

microASMD SMD/SMT SMD/SMT 200 mA 30 VDC 600 mA 20 A 600 mOhms 1210 (3225 metric) - 40 C + 125 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC RF5030-000
Datasheet
4,046In 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 .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 .9A 30V SMD AEC-Q200
Datasheet
6,911In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,000

ASMD SMD/SMT SMD/SMT 900 mA 30 VDC 2.16 A 40 A 480 mOhms 2920 (7450 metric) - 40 C + 85 C AEC-Q100 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 1.25A 33VDC 40A 2920 AEC-Q200
Datasheet
6,863In 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 .1A 15VDC 10A 0603 AEC-Q200
Datasheet
3,719In 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
4,488In 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
5,206In 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 .3A 30V Mini SMD AEC-Q200
Datasheet
9,193In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,000

miniASMD SMD/SMT SMD/SMT 300 mA 30 VDC 600 mA 40 A 1.75 Ohms 1812 (4532 metric) - 40 C + 85 C AEC-Q100 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .12A 15VDC 20A 0805 AEC-Q200
Datasheet
3,646In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

picoASMD SMD/SMT Solder 120 mA 15 VDC 300 mA 20 A 9 Ohms 0805 (2012 metric) - 40 C + 85 C AEC-Q200 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 12V 2.6A-HD 100A 1812
Datasheet
1,257In Stock
Min.: 1
Mult.: 1

miniASMD PCB Mount SMD/SMT 2.6 A 12 VDC 5 A 1812 (4532 metric) - 40 C + 85 C
Littelfuse Resettable Fuses - PPTC 13.2V 2.6A-HD 100A 1812
Datasheet
1,499In Stock
Min.: 1
Mult.: 1

miniASMD PCB Mount SMD/SMT 2.6 A 13.2 VDC 5 A 1812 (4532 metric) - 40 C + 85 C
Littelfuse Resettable Fuses - PPTC 1.2A 16VHighTemp SMD AEC-Q200
Datasheet
19In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,000

AHS SMD/SMT SMD/SMT 1.2 A 16 VDC 2.3 A 50 A 150 mOhms 2920 (7450 metric) - 40 C + 125 C AEC-Q100 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 1.6A 16VHighTemp SMD AEC-Q200
Datasheet
480In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

AHS SMD/SMT SMD/SMT 1.6 A 16 VDC 3.2 A 70 A 50 mOhms 3425 (8673 metric) - 40 C + 125 C AEC-Q100 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 2A 16V High Temp SMD AEC-Q200
Datasheet
1,909In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

AHS SMD/SMT SMD/SMT 2 A 16 VDC 4 A 70 A 50 mOhms 3425 (8673 metric) - 40 C + 125 C AEC-Q100 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .37A 60V SMD AEC-Q200
Datasheet
1,907In Stock
2,000Expected 30/07/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2,000

ASMD SMD/SMT SMD/SMT 370 mA 60 VDC 980 mA 10 A 1.4 Ohms 2920 (7450 metric) - 40 C + 85 C AEC-Q100 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .6A 30V SMD AEC-Q200
Datasheet
2,385In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,000

ASMD SMD/SMT SMD/SMT 600 mA 30 VDC 1.48 A 40 A 1 Ohms 2920 (7450 metric) - 40 C + 85 C AEC-Q100 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 1.04A 16V SMD AEC-Q200
Datasheet
1,622In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,000

ASMD SMD/SMT SMD/SMT 1.04 A 16 VDC 2.46 A 40 A 250 mOhms 2920 (7450 metric) - 40 C + 85 C AEC-Q100 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 1.85A 16V SMD AEC-Q200
Datasheet
980In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

ASMD SMD/SMT SMD/SMT 1.85 A 16 VDC 3.7 A 40 A 126 mOhms 3425 (8764 metric) - 40 C + 85 C AEC-Q100 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 1.73A 16V SMD AEC-Q200
Datasheet
1,106In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

ASMD SMD/SMT SMD/SMT 1.73 A 16 VDC 3.93 A 40 A 120 mOhms 3425 (8764 metric) - 40 C + 85 C AEC-Q100 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 3A 24VDC 40A 2920 AEC-Q200
Datasheet
181In Stock
4,000Expected 07/08/2026
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 30V Micro SMD AEC-Q200
Datasheet
734In Stock
8,000Expected 29/09/2026
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

microASMD SMD/SMT SMD/SMT 100 mA 30 VDC 250 mA 10 A 15 Ohms 1210 (3225 metric) - 40 C + 85 C AEC-Q100 Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .1A 60V Mini SMD AEC-Q200
Datasheet
211In Stock
10,000Expected 17/08/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2,000

miniASMD SMD/SMT SMD/SMT 100 mA 60 VDC 300 mA 40 A 12.7 Ohms 1812 (4532 metric) - 40 C + 85 C AEC-Q100 Reel, Cut Tape, MouseReel