Battery Strap PolySwitch PTCs

Littelfuse Battery Strap PolySwitch Resettable Polymeric Positive Temperature Coefficient (PPTC) Devices provide reliable, non-cycling protection against overcharging and short circuit events for rechargeable battery cells where resettable protection is desired. The axial leaded products offer several material platforms to help protect battery applications. Each material platform offers different performance characteristics that allow the engineer greater design flexibility. Littelfuse PolySwitch devices for battery protection include the SRP, LR4, VTP, VLP, VLR series, disc, and other special application strap devices.

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Description Datasheet Availability Pricing (CAD) 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 1.75A 16V 100A Imax
Datasheet
5,751In Stock
Min.: 1
Mult.: 1

VTP Strap Mount SMD/SMT 1.75 A 16 VDC 3.6 A 100 A 102 mOhms - 40 C + 85 C Bulk
Littelfuse Resettable Fuses - PPTC 1.7A 16V 100A Imax
Datasheet
631In Stock
Min.: 1
Mult.: 1

VTP Strap Mount SMD/SMT 1.7 A 16 VDC 3.4 A 100 A 52 mOhms - 40 C + 85 C Bulk
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 2.7A 16V 60A Imax
Datasheet
2,762In Stock
Min.: 1
Mult.: 1

VLP Strap Mount SMD/SMT 2.7 A 16 VDC 6.5 A 60 A 36 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 SRP175F
Datasheet
6,094In Stock
Min.: 1
Mult.: 1

SRP Strap Mount SMD/SMT 1.75 A 15 VDC 3.8 A 100 A 120 mOhms - 40 C + 85 C Bulk
Littelfuse Resettable Fuses - PPTC SRP200F
Datasheet
27,959In Stock
Min.: 1
Mult.: 1

SRP Strap Mount SMD/SMT 2 A 30 VDC 4.4 A 100 A 100 mOhms - 40 C + 85 C Bulk
Littelfuse Resettable Fuses - PPTC SRP350F
Datasheet
14,734In Stock
Min.: 1
Mult.: 1

SRP Strap Mount SMD/SMT 3.5 A 30 VDC 6.3 A 100 A 50 mOhms - 40 C + 85 C Bulk
Littelfuse Resettable Fuses - PPTC 4.2A 30V
Datasheet
13,125In Stock
Min.: 1
Mult.: 1

SRP Strap Mount SMD/SMT 4.2 A 30 VDC 7.6 A 100 A 40 mOhms - 40 C + 85 C Bulk
Littelfuse Resettable Fuses - PPTC 1.75A 12V 100A Imax
Datasheet
32,985In Stock
Min.: 1
Mult.: 1

VLR Strap Mount SMD/SMT 1.75 A 12 VDC 4.2 A 100 A 62 mOhms - 40 C + 70 C Bulk
Littelfuse Resettable Fuses - PPTC 1.7A 16V 100A Imax
Datasheet
4,721In Stock
Min.: 1
Mult.: 1

VTP Strap Mount Axial 1.7 A 16 V 3.4 A 100 A 52 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 2026-04-03
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 2026-02-19
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 1.2A 15V 100A Imax
Datasheet
1,908In Stock
Min.: 1
Mult.: 1

SRP Strap Mount SMD/SMT 1.2 A 15 VDC 2.7 A 100 A 220 mOhms - 40 C + 85 C Bulk
Littelfuse Resettable Fuses - PPTC 1.1A 16V 100A Imax
Datasheet
913In Stock
Min.: 1
Mult.: 1

VTP Strap Mount SMD/SMT 1.1 A 16 VDC 2.7 A 100 A 140 mOhms - 40 C + 85 C Bulk
Littelfuse Resettable Fuses - PPTC 2.1A 16V 100A Imax
Datasheet
1,267In Stock
2,000Expected 2026-02-19
Min.: 1
Mult.: 1

VTP Strap Mount SMD/SMT 2.1 A 16 VDC 4.7 A 100 A 60 mOhms - 40 C + 85 C Bulk
Littelfuse Resettable Fuses - PPTC 2.1A 16V 100A Imax
Datasheet
1,000In Stock
Min.: 1
Mult.: 1

VTP Strap Mount SMD/SMT 2.1 A 16 VDC 4.7 A 100 A 60 mOhms - 40 C + 85 C Bulk
Littelfuse Resettable Fuses - PPTC 5.5A 20V 100A Imax
Datasheet
2,618Expected 2026-03-27
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 12V 100A Imax
Datasheet
965Expected 2026-04-03
Min.: 1
Mult.: 1

VLR Strap Mount SMD/SMT 1.7 A 12 VDC 4.1 A 100 A 64 mOhms - 40 C + 70 C Bulk