Resettable Fuses - PPTC

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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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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (JPY) Filter the results in the table by unit price based on your quantity.	Qty.	Series	Mounting Style	Termination Style	Hold Current	Maximum Voltage	Trip Current	Current Rating - Max	Resistance	Minimum Operating Temperature	Maximum Operating Temperature	Packaging
Resettable Fuses - PPTC 1.7A 16V 100A Imax VTP170F Littelfuse 1: ¥154.5 8,590In Stock	Mfr. Part # VTP170F Mouser Part # 650-VTP170F	Littelfuse	Resettable Fuses - PPTC 1.7A 16V 100A Imax Learn More about Littelfuse vtp pptcs	Datasheet	8,590In Stock	¥154.5 ¥142.7 ¥118.3 ¥109.1 View ¥98.2 ¥92.7 ¥90.4 ¥89.7 ¥73.1	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
Resettable Fuses - PPTC 1.75A 16V 100A Imax VTP175F Littelfuse 1: ¥194.3 3,251In Stock	Mfr. Part # VTP175F Mouser Part # 650-VTP175F	Littelfuse	Resettable Fuses - PPTC 1.75A 16V 100A Imax Learn More about Littelfuse vtp pptcs	Datasheet	3,251In Stock	¥194.3 ¥148.8 ¥123.2 ¥113.4 View ¥102 ¥94 ¥86.5 ¥78.7 ¥71.4	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
Resettable Fuses - PPTC 1.7A 12V 100A Imax VLR170F Littelfuse 1: ¥137.9 1,715In Stock	Mfr. Part # VLR170F Mouser Part # 650-VLR170F	Littelfuse	Resettable Fuses - PPTC 1.7A 12V 100A Imax Learn More about Littelfuse battery strap ptcs	Datasheet	1,715In Stock	¥137.9 ¥126.6 ¥103.5 ¥97 View ¥87.2 ¥80.2 ¥71.9 ¥64.1	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
Resettable Fuses - PPTC 1.7A 16V 100A Imax VTP170XSF Littelfuse 1: ¥176.1 26In Stock	Mfr. Part # VTP170XSF Mouser Part # 650-VTP170XSF	Littelfuse	Resettable Fuses - PPTC 1.7A 16V 100A Imax Learn More about Littelfuse vtp pptcs	Datasheet	26In Stock	¥176.1 ¥159.5 ¥112 ¥103.3 View ¥92.8 ¥85.7 ¥78.7	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
Resettable Fuses - PPTC 2.6A 15V 100A Imax LR4-260F Littelfuse 1: ¥137.9 45,072In Stock 20,000Expected 12/21/2026	Mfr. Part # LR4-260F Mouser Part # 650-LR4-260F	Littelfuse	Resettable Fuses - PPTC 2.6A 15V 100A Imax Learn More about Littelfuse lr4 pptcs	Datasheet	45,072In Stock 20,000Expected 12/21/2026	¥137.9 ¥126.6 ¥105.1 ¥97 View ¥87.2 ¥80.4 ¥79.1	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
Resettable Fuses - PPTC 4.2A 30V SRP420F Littelfuse 1: ¥161.1 42,866In Stock	Mfr. Part # SRP420F Mouser Part # 650-SRP420F	Littelfuse	Resettable Fuses - PPTC 4.2A 30V Learn More about Littelfuse battery strap ptcs	Datasheet	42,866In Stock	¥161.1 ¥146.5 ¥111.5 ¥105 View ¥100.2 ¥94.3 ¥87 ¥82.2	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
Resettable Fuses - PPTC 1.75A 12V 100A Imax VLR175F Littelfuse 1: ¥137.9 38,473In Stock	Mfr. Part # VLR175F Mouser Part # 650-VLR175F	Littelfuse	Resettable Fuses - PPTC 1.75A 12V 100A Imax Learn More about Littelfuse battery strap ptcs	Datasheet	38,473In Stock	¥137.9 ¥126.6 ¥105.1 ¥97 View ¥87.2 ¥80.4 ¥80.2 ¥78.7 ¥73.4	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
Resettable Fuses - PPTC LR4-1300SSF LR4-1300SSF Littelfuse 1: ¥348.8 3,917In Stock	Mfr. Part # LR4-1300SSF Mouser Part # 650-LR4-1300SSF	Littelfuse	Resettable Fuses - PPTC LR4-1300SSF Learn More about Littelfuse lr4 pptcs	Datasheet	3,917In Stock	¥348.8 ¥295.7 ¥257.5 ¥239.2 View ¥220.9 ¥204.3 ¥191	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
Resettable Fuses - PPTC LR4-380F LR4-380F Littelfuse 1: ¥157.8 5,046In Stock	Mfr. Part # LR4-380F Mouser Part # 650-LR4-380F	Littelfuse	Resettable Fuses - PPTC LR4-380F Learn More about Littelfuse lr4 pptcs	Datasheet	5,046In Stock	¥157.8 ¥144.8 ¥129.9 ¥103 View ¥97 ¥90.4 ¥85	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
Resettable Fuses - PPTC 4.5A 20V 100A Imax LR4-450F Littelfuse 1: ¥177.7 10,848In Stock	Mfr. Part # LR4-450F Mouser Part # 650-LR4-450F	Littelfuse	Resettable Fuses - PPTC 4.5A 20V 100A Imax Learn More about Littelfuse lr4 pptcs	Datasheet	10,848In Stock	¥177.7 ¥163.1 ¥135.4 ¥124.9 View ¥112.3 ¥103.6 ¥95.3 ¥91	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
Resettable Fuses - PPTC 5.5A 20V 100A Imax LR4-550F Littelfuse 1: ¥182.7 7,521In Stock 16,000On Order	Mfr. Part # LR4-550F Mouser Part # 650-LR4-550F	Littelfuse	Resettable Fuses - PPTC 5.5A 20V 100A Imax Learn More about Littelfuse lr4 pptcs	Datasheet	7,521In Stock 16,000On Order On Order Ship Dates Mfr. #: LR4-550F Stock: 7,521 Can Ship Immediately On Order: 5,000 Expected 11/17/2026 11,000 Expected 2/23/2027 Factory Lead-Time: 17 Weeks	¥182.7 ¥167.8 ¥139 ¥128.2 View ¥115.3 ¥107.6 ¥107.5	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
Resettable Fuses - PPTC 6A 20V 100A Imax LR4-600F Littelfuse 1: ¥201 4,120In Stock	Mfr. Part # LR4-600F Mouser Part # 650-LR4-600F	Littelfuse	Resettable Fuses - PPTC 6A 20V 100A Imax Learn More about Littelfuse lr4 pptcs	Datasheet	4,120In Stock	¥201 ¥186 ¥141.7 ¥127.6 View ¥117.6 ¥111.5	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
Resettable Fuses - PPTC 7.3A 20V 100A Imax LR4-730F Littelfuse 1: ¥234.2 11,098In Stock	Mfr. Part # LR4-730F Mouser Part # 650-LR4-730F	Littelfuse	Resettable Fuses - PPTC 7.3A 20V 100A Imax Learn More about Littelfuse lr4 pptcs	Datasheet	11,098In Stock	¥234.2 ¥215.9 ¥179.4 ¥164.8 View ¥148 ¥136.5 ¥125.7 ¥123.2	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
Resettable Fuses - PPTC 9A 20V 100A Imax LR4-900F Littelfuse 1: ¥259.1 3,713In Stock	Mfr. Part # LR4-900F Mouser Part # 650-LR4-900F	Littelfuse	Resettable Fuses - PPTC 9A 20V 100A Imax Learn More about Littelfuse lr4 pptcs	Datasheet	3,713In Stock	¥259.1 ¥239.2 ¥197.7 ¥182.7 View ¥163.6 ¥158 ¥151.5 ¥146.7	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
Resettable Fuses - PPTC SRP175F SRP175F Littelfuse 1: ¥129.6 24,886In Stock	Mfr. Part # SRP175F Mouser Part # 650-SRP175F	Littelfuse	Resettable Fuses - PPTC SRP175F Learn More about Littelfuse battery strap ptcs	Datasheet	24,886In Stock	¥129.6 ¥100.5 ¥87.5 ¥78.4 View ¥73.6 ¥63.8 ¥63.5 ¥63.3 ¥56.5	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
Resettable Fuses - PPTC SRP200F SRP200F Littelfuse 1: ¥162.8 33,840In Stock	Mfr. Part # SRP200F Mouser Part # 650-SRP200F	Littelfuse	Resettable Fuses - PPTC SRP200F Learn More about Littelfuse battery strap ptcs	Datasheet	33,840In Stock	¥162.8 ¥134.9 ¥103.3 ¥95.2 View ¥85.7 ¥79.1 ¥72.8 ¥72.4 ¥67.6	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
Resettable Fuses - PPTC SRP350F SRP350F Littelfuse 1: ¥127.9 17,904In Stock	Mfr. Part # SRP350F Mouser Part # 650-SRP350F	Littelfuse	Resettable Fuses - PPTC SRP350F Learn More about Littelfuse battery strap ptcs	Datasheet	17,904In Stock	¥127.9 ¥117.3 ¥97.3 ¥89.9 View ¥80.7 ¥74.6 ¥68.8 ¥67.4	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
Resettable Fuses - PPTC 2.1A 16V 100A Imax VTP210GF Littelfuse 1: ¥146.2 6,393In Stock	Mfr. Part # VTP210GF Mouser Part # 650-VTP210GF	Littelfuse	Resettable Fuses - PPTC 2.1A 16V 100A Imax Learn More about Littelfuse vtp pptcs	Datasheet	6,393In Stock	¥146.2 ¥134.2 ¥111.5 ¥102.8 View ¥92.4 ¥85.2 ¥78.4 ¥73.4	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
Resettable Fuses - PPTC LR4-190F LR4-190F Littelfuse 1: ¥112.9 2,830In Stock	Mfr. Part # LR4-190F Mouser Part # 650-LR4-190F	Littelfuse	Resettable Fuses - PPTC LR4-190F Learn More about Littelfuse lr4 pptcs	Datasheet	2,830In Stock	¥112.9 ¥103.3 ¥85.9 ¥79.2 View ¥71.3 ¥65.6 ¥58.8	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
Resettable Fuses - PPTC 1.2A 15V 100A Imax SRP120F Littelfuse 1: ¥114.6 1,562In Stock	Mfr. Part # SRP120F Mouser Part # 650-SRP120F	Littelfuse	Resettable Fuses - PPTC 1.2A 15V 100A Imax Learn More about Littelfuse battery strap ptcs	Datasheet	1,562In Stock	¥114.6 ¥104.6 ¥86.9 ¥80.1 View ¥72.1 ¥66.4 ¥61.1 ¥55.8	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
Resettable Fuses - PPTC 2.7A 16V 60A Imax VLP270F Littelfuse 1: ¥146.2 2,478In Stock	Mfr. Part # VLP270F Mouser Part # 650-VLP270F	Littelfuse	Resettable Fuses - PPTC 2.7A 16V 60A Imax Learn More about Littelfuse battery strap ptcs	Datasheet	2,478In Stock	¥146.2 ¥129.1 ¥108.3 ¥100.3 View ¥90.9 ¥84.4 ¥78.1 ¥74.4 ¥73.4	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
Resettable Fuses - PPTC 1.1A 16V 100A Imax VTP110F Littelfuse 1: ¥112.9 534In Stock	Mfr. Part # VTP110F Mouser Part # 650-VTP110F	Littelfuse	Resettable Fuses - PPTC 1.1A 16V 100A Imax Learn More about Littelfuse vtp pptcs	Datasheet	534In Stock	¥112.9 ¥103.3 ¥85.9 ¥79.2 View ¥71.3 ¥65.6 ¥60.5 ¥58.8	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
Resettable Fuses - PPTC 2.1A 16V 100A Imax VTP210SF Littelfuse 1: ¥137.9 1,500In Stock	Mfr. Part # VTP210SF Mouser Part # 650-VTP210SF	Littelfuse	Resettable Fuses - PPTC 2.1A 16V 100A Imax Learn More about Littelfuse vtp pptcs	Datasheet	1,500In Stock	¥137.9 ¥126.6 ¥105.1 ¥97 View ¥87.2 ¥80.4 ¥73.9	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
Resettable Fuses - PPTC LR4-380XF LR4-380XF Littelfuse 1: ¥167.8 Non-Stocked Lead-Time 17 Weeks	Mfr. Part # LR4-380XF Mouser Part # 650-LR4-380XF	Littelfuse	Resettable Fuses - PPTC LR4-380XF Learn More about Littelfuse lr4 pptcs	Datasheet	Non-Stocked Lead-Time 17 Weeks	¥167.8 ¥153.6 ¥127.6 ¥117.6 View ¥105.8 ¥97.5 ¥89.7 ¥85	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
Resettable Fuses - PPTC LR4-600XF LR4-600XF Littelfuse 10,000: ¥120.1 Non-Stocked Lead-Time 17 Weeks	Mfr. Part # LR4-600XF Mouser Part # 650-LR4-600XF	Littelfuse	Resettable Fuses - PPTC LR4-600XF Learn More about Littelfuse lr4 pptcs	Datasheet	Non-Stocked Lead-Time 17 Weeks	¥120.1	Min.: 10,000 Mult.: 1,000	LR4	Strap Mount	SMD/SMT	6 A	20 VDC	11.7 A	100 A	14 mOhms	- 40 C	+ 85 C	Bulk