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
Package/Case
Minimum Operating Temperature
Maximum Operating Temperature
Qualification
Packaging
Littelfuse Resettable Fuses - PPTC 1.6A 16V 40A Imax
Datasheet
Product Comments
1.685In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1.500

SMD SMD/SMT SMD/SMT 1.6 A 16 VDC 3.2 A 70 A 150 mOhms 3425 (8764 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC PTC 12V POLYFUSE SURF MOUNT 0805 SL 1.5A
Datasheet
4.000Expected 5/1/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 4.000

0805L PCB Mount SMD/SMT 1.5 A 12 VDC 3 A 50 A 80 mOhms - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 30V 1206 .160A POLYFUSE
Datasheet
41.906On Order
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3.000

1206L SMD/SMT SMD/SMT 160 mA 30 VDC 370 mA 100 A 4.5 Ohms 1206 (3216 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel

Littelfuse Resettable Fuses - PPTC 12V 2.6A-HD 50A SMD
Datasheet
3.910Expected 2/17/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 4.000

Low Rho SMD/SMT SMD/SMT 2.6 A 12 VDC 5 A 50 A 55 mOhms 1206 (3216 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 24V 750MA-HD 100A SMD
Datasheet
5.895Expected 2/17/2026
Min.: 1
Mult.: 1
Reel: 2.000

1210L SMD/SMT SMD/SMT 750 mA 24 VDC 1.5 A 100 A 400 mOhms 1210 (3225 metric) - 40 C + 85 C Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC 1.25A 15V 2920
Datasheet
6.000Expected 2/17/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2.000

2920L SMD/SMT SMD/SMT 1.25 A 15 VDC 2.5 A 40 A 250 mOhms 2920 (7450 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 33V 750MA-HD 100A MAX
Datasheet
7.500Expected 2/19/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1.500

miniSMD SMD/SMT SMD/SMT 750 mA 33 VDC 1.6 A 100 A 390 mOhms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel

Littelfuse Resettable Fuses - PPTC 6V 1.0A-HD 40A SMD
Datasheet
9.999Expected 4/30/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 10.000

Low Rho SMD/SMT SMD/SMT 1 A 6 VDC 2 A 40 A 250 mOhms 0402 (1005 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 125 mOhms 40 A 24 VDC - 40 C+ 85 C
Datasheet
5.985On Order
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2.000

SMD SMD/SMT SMD/SMT 2 A 24 VDC 4 A 40 A 125 mOhms 2920 (7450 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC 0.75A 30V 2920
Datasheet
752In Stock
3.748Expected 3/18/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1.500

2920L SMD/SMT SMD/SMT 750 mA 30 VDC 1.5 A 40 A 1 Ohms 2920 (7450 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse Resettable Fuses - PPTC .75A 33VDC 40A 2920 AEC-Q200
Datasheet
2.917Expected 3/17/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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 6V 1.75A-HD 6A MAX
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 4.000
Mult.: 4.000
Reel: 4.000

Low Rho SMD/SMT SMD/SMT 1.75 A 6 VDC 3.5 A 50 A 60 mOhms 0603 (1608 metric) - 40 C + 85 C Reel
Littelfuse Resettable Fuses - PPTC 6V 2.00A 0603 SL PTC
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 4.000
Mult.: 4.000
Reel: 4.000

Low Rho SMD/SMT SMD/SMT 2 A 6 VDC 4 A 50 A 40 mOhms 0603 (1608 metric) - 40 C + 85 C Reel
Littelfuse Resettable Fuses - PPTC 30V 50MA-HD 40A SMD
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 1
Mult.: 1
Reel: 4.000

0805L SMD/SMT SMD/SMT 50 mA 30 V 150 mA 40 A 20 Ohms 0805 (2012 metric) - 40 C + 85 C Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC 6V 750MA-HD 40A MAX
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 3.000
Mult.: 3.000
Reel: 3.000

0805L SMD/SMT SMD/SMT 750 mA 6 VDC 1.5 A 40 A 350 mOhms 0805 (2012 metric) - 40 C + 85 C Reel
Littelfuse Resettable Fuses - PPTC 6V 1.0A-HD 40A 0201
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 3.000
Mult.: 3.000
Reel: 3.000

0805L PCB Mount SMD/SMT 1 A 6 VDC 1.95 A 40 A 210 mOhms 0805 (2012 metric) - 40 C + 85 C Reel
Littelfuse Resettable Fuses - PPTC 9V 5A 1206 POLYFUSE SURF MOUNT
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 3.000
Mult.: 3.000
Reel: 3.000

Low Rho PCB Mount SMD/SMT 5 A 6 VDC 10 A 50 A 12 mOhms - 40 C + 85 C Reel
Littelfuse Resettable Fuses - PPTC 6V 3.5A-HD 50A SMD
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 4.000
Mult.: 4.000
Reel: 4.000
Low Rho SMD/SMT SMD/SMT 3.5 A 6 VDC 7 A 50 A 18 mOhms 1210 (3225 metric) - 40 C + 85 C Reel
Littelfuse Resettable Fuses - PPTC 6V 6.0A-HD 50A SMD
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 4.000
Mult.: 4.000
Reel: 4.000
Low Rho SMD/SMT SMD/SMT 6 A 1210 (3225 metric) - 40 C + 85 C Reel
Littelfuse Resettable Fuses - PPTC PTC 15V POLYFUSE SURF MOUNT 2920 1.25A
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 1
Mult.: 1
Reel: 2.000

2920L SMD/SMT SMD/SMT 1.25 A 15 V 2.5 A 40 A 250 mOhms 2920 (7450 metric) - 40 C + 85 C Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC 12V 6.0A-HD 50A SMD
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 1
Mult.: 1
Reel: 1.000

2920L SMD/SMT SMD/SMT 6 A 12 V 12 A 50 A 20 mOhms 2920 (7450 metric) - 40 C + 85 C Reel, Cut Tape
Littelfuse Resettable Fuses - PPTC 13.2V 750MA-HD 100A 1812
Datasheet
Non-Stocked Lead-Time 11 Weeks
Min.: 1
Mult.: 1

miniASMD SMD/SMT SMD/SMT 750 mA 13.2 VDC 1.5 A 100 A 450 mOhms 1812 (4532 metric) - 40 C + 85 C
Littelfuse Resettable Fuses - PPTC 12V 1.5A-HD 100A 1812
Datasheet
Non-Stocked Lead-Time 11 Weeks
Min.: 1
Mult.: 1

miniASMD PCB Mount SMD/SMT 1.5 A 12 VDC 2.8 A 1812 (4532 metric) - 40 C + 85 C
Littelfuse Resettable Fuses - PPTC PTC 6V POLY0805 .350 HALOGEN-FREE
Datasheet
Product Comments
Non-Stocked
Min.: 4.000
Mult.: 4.000

0805L SMD/SMT SMD/SMT 350 mA 6 V 750 mA 100 A 1.2 Ohms 0805 (2012 metric) - 40 C + 85 C Bulk
Littelfuse Resettable Fuses - PPTC 12V 1.10A 1206 PTC
Datasheet
Non-Stocked
Min.: 3.000
Mult.: 3.000
Reel: 3.000

1206L PCB Mount SMD/SMT 1206 (3216 metric) - 40 C + 85 C Reel