LR4 15/20V PolySwitch Battery Strap PPTCs

Littelfuse LR4 15/20V PolySwitch Battery Strap Polymeric Positive Temperature Coefficient Resettable Fuses (PPTCs) serve changing battery technology and help protect battery applications. Littelfuse LR4 offers a 3.8A to 13A hold current and 100A maximum current along with 15 or 20V maximum voltage. These Polyswitch devices provide fast time-to-trip and serve a variety of devices, including smartphones, tablet PCs, mobile radios, digital cameras, and power tool charge lines.

Results: 31
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Description Datasheet Availability Pricing (DKK) 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
Packaging
Littelfuse Resettable Fuses - PPTC LR4-600XF
Datasheet
2.920In Stock
Min.: 1
Mult.: 1

LR4 Strap Mount SMD/SMT 6 A 20 VDC 11.7 A 100 A 14 mOhms - 40 C + 85 C Bulk
Littelfuse Resettable Fuses - PPTC LR4-1300SSF
Datasheet
5.590In Stock
Min.: 1
Mult.: 1

LR4 Strap Mount SMD/SMT 13 A 20 VDC 21.2 A 100 A 6.5 mOhms - 40 C + 85 C Bulk
Littelfuse Resettable Fuses - PPTC LR4-380F
Datasheet
4.355In Stock
Min.: 1
Mult.: 1

LR4 Strap Mount SMD/SMT 3.8 A 15 VDC 8.3 A 100 A 26 mOhms - 40 C + 85 C Bulk
Littelfuse Resettable Fuses - PPTC 4.5A 20V 100A Imax
Datasheet
5.976In Stock
Min.: 1
Mult.: 1

LR4 Strap Mount SMD/SMT 4.5 A 20 VDC 8.9 A 100 A 20 mOhms - 40 C + 85 C Bulk
Littelfuse Resettable Fuses - PPTC 6A 20V 100A Imax
Datasheet
11.569In Stock
Min.: 1
Mult.: 1

LR4 Strap Mount SMD/SMT 6 A 20 VDC 11.7 A 100 A 14 mOhms - 40 C + 85 C Bulk
Littelfuse Resettable Fuses - PPTC 9A 20V 100A Imax
Datasheet
9.673In Stock
Min.: 1
Mult.: 1

LR4 Strap Mount SMD/SMT 9 A 20 VDC 16.7 A 100 A 10 mOhms - 40 C + 85 C Bulk
Littelfuse Resettable Fuses - PPTC LR4-190F
Datasheet
2.630In Stock
Min.: 1
Mult.: 1

LR4 Strap Mount SMD/SMT 1.9 A 15 VDC 3.9 A 100 A 72 mOhms - 40 C + 85 C Bulk
Littelfuse Resettable Fuses - PPTC 2.6A 15V 100A Imax
Datasheet
597In Stock
28.000Expected 03/04/2026
Min.: 1
Mult.: 1

LR4 Strap Mount SMD/SMT 2.6 A 15 VDC 5.8 A 100 A 42 mOhms - 40 C + 85 C Bulk
Littelfuse Resettable Fuses - PPTC 2.6A 15V 100A Imax
Datasheet
165In Stock
2.000Expected 20/03/2026
Min.: 1
Mult.: 1

LR4 Strap Mount SMD/SMT 2.6 A 15 VDC 5.8 A 100 A 42 mOhms - 40 C + 85 C Bulk
Littelfuse Resettable Fuses - PPTC LR4-380XF
Datasheet
503In Stock
Min.: 1
Mult.: 1

LR4 Strap Mount SMD/SMT 3.8 A 15 VDC 8.3 A 100 A 26 mOhms - 40 C + 85 C Bulk
Littelfuse Resettable Fuses - PPTC 7.3A 20V 100A Imax
Datasheet
972In Stock
6.000Expected 21/04/2026
Min.: 1
Mult.: 1

LR4 Strap Mount SMD/SMT 7.3 A 20 VDC 14.1 A 100 A 12 mOhms - 40 C + 85 C Bulk
Littelfuse Resettable Fuses - PPTC 5.5A 20V 100A Imax
Datasheet
2.828Expected 27/03/2026
Min.: 1
Mult.: 1

LR4 Strap Mount SMD/SMT 5.5 A 20 VDC 10.5 A 100 A 16 mOhms - 40 C + 85 C Bulk
Littelfuse Resettable Fuses - PPTC 1.7A 15V 100A Imax
Datasheet
Non-Stocked
Min.: 10.000
Mult.: 2.000

LR4 Strap Mount Axial 1.7 A 15 V 3.4 A 100 A 78 mOhms - 40 C + 85 C Bulk
Littelfuse Resettable Fuses - PPTC 15V 1.9A Ih 0.102ohm
Datasheet
Non-Stocked
Min.: 10.000
Mult.: 10.000

LR4 Strap Mount Axial 1.9 A 15 V 3.9 A 100 A 102 mOhms - 40 C + 85 C Bulk
Littelfuse Resettable Fuses - PPTC 1.9A 15V 100A Imax
Datasheet
Non-Stocked
Min.: 10.000
Mult.: 10.000

LR4 Strap Mount Axial 1.9 A 15 V 3.9 A 100 A 72 mOhms - 40 C + 85 C Bulk
Littelfuse Resettable Fuses - PPTC 1.9A STRAP Polyswitch PTC RESET
Datasheet
Non-Stocked
Min.: 10.000
Mult.: 10.000

LR4 Strap Mount Axial 1.9 A 15 V 3.9 A 100 A 72 mOhms - 40 C + 85 C Bulk
Littelfuse Resettable Fuses - PPTC 1.9A STRAP Polyswitch PTC RESET
Datasheet
Non-Stocked
Min.: 10.000
Mult.: 10.000

LR4 Strap Mount Axial 1.9 A 15 V 3.9 A 100 A 72 mOhms - 40 C + 85 C Bulk
Littelfuse Resettable Fuses - PPTC Battery Strap 2.5A
Datasheet
Non-Stocked
Min.: 1
Mult.: 1

LR4 Strap Mount Axial 2.5 A 15 V 100 A - 40 C + 85 C Bulk
Littelfuse Resettable Fuses - PPTC
Datasheet
Non-Stocked
Min.: 1
Mult.: 1

LR4 Strap Mount Axial 3.8 A 15 V 8.3 A 100 A 26 mOhms - 40 C + 85 C Bulk
Littelfuse Resettable Fuses - PPTC 3.8A 15V 100A Imax
Datasheet
Non-Stocked
Min.: 2.000
Mult.: 2.000

LR4 Strap Mount Axial 3.8 A 15 V 8.3 A 100 A 26 mOhms - 40 C + 85 C Bulk
Littelfuse Resettable Fuses - PPTC 15V 3.8A Ih 0.37 ohm
Datasheet
Non-Stocked
Min.: 10.000
Mult.: 10.000
LR4 Strap Mount Axial 3.8 A 15 V 8.3 A 100 A 370 mOhms - 40 C + 85 C Bulk
Littelfuse Resettable Fuses - PPTC 5.5A STRAP Polyswitch PTC RESET
Datasheet
Non-Stocked
Min.: 10.000
Mult.: 10.000

LR4 Strap Mount Axial 5.5 A 20 V 10.5 A 100 A 16 mOhms - 40 C + 85 C Bulk
Littelfuse Resettable Fuses - PPTC 20V 5.5A Ih 0.016ohm
Datasheet
Non-Stocked
Min.: 10.000
Mult.: 10.000
LR4 Strap Mount Axial 5.5 A 20 V 10.5 A 100 A 16 mOhms - 40 C + 85 C Bulk
Littelfuse Resettable Fuses - PPTC Battery Strap 5.6A
Datasheet
Non-Stocked
Min.: 2.000
Mult.: 2.000

LR4 Strap Mount Axial 5.6 A 20 V 100 A - 40 C + 85 C Bulk
Littelfuse Resettable Fuses - PPTC Battery Strap 6.0A
Datasheet
Non-Stocked
Min.: 2.000
Mult.: 2.000

LR4 Strap Mount Axial 6 A 20 V 11.7 A 100 A 14 mOhms - 40 C + 85 C Bulk