PTC Resettable Fuses

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Mfr. Part #	Availability	Price	Quantity	Datasheet	Package/Case	Series	Packaging	Product Status	Type	Voltage - Max	Current - Hold (Ih) (Max)	Current - Trip (It)	Current - Max	Time to Trip	Resistance - Initial (Ri) (Min)	Resistance - Post Trip (R1) (Max)	Resistance - 25°C (Typ)	Operating Temperature	Grade	Qualification	Ratings	Mounting Type	Size / Dimension	Height - Seated (Max)	Thickness (Max)	Lead Spacing
LTP100S PTC RESET FUSE 24V 1A STRAP Littelfuse Inc.	6,495	-	RFQ	Datasheet	Strap	PolySwitch®, LTP	Bulk	Obsolete	Polymeric	24V	1 A	2.5 A	100 A	7 s	70 mOhms	260 mOhms	-	-40°C ~ 85°C	-	-	-	User Defined	0.866" L x 0.199" W (22.00mm x 5.05mm)	-	0.039" (1.00mm)	-
LTP070F PTC RESET FUSE 15V 700MA STRAP Littelfuse Inc.	3,822	-	RFQ	Datasheet	Strap	PolySwitch®, LTP	Bulk	Obsolete	Polymeric	15V	700 mA	1.45 A	100 A	5 s	100 mOhms	340 mOhms	-	-40°C ~ 85°C	-	-	-	User Defined	1.417" L x 0.199" W (36.00mm x 5.05mm)	-	0.047" (1.20mm)	-
LTP180F PTC RESET FUSE 24V 1.8A STRAP Littelfuse Inc.	5,625	-	RFQ	Datasheet	Strap	PolySwitch®, LTP	Bulk	Obsolete	Polymeric	24V	1.8 A	3.8 A	100 A	2.9 s	40 mOhms	120 mOhms	-	-40°C ~ 85°C	-	-	-	User Defined	0.984" L x 0.199" W (25.00mm x 5.05mm)	-	0.039" (1.00mm)	-
LTP190F PTC RESET FUSE 24V 1.9A STRAP Littelfuse Inc.	6,658	-	RFQ	Datasheet	Strap	PolySwitch®	Bulk	Obsolete	Polymeric	24V	1.9 A	4.2 A	100 A	3 s	30 mOhms	100 mOhms	-	-	-	-	-	User Defined	0.880" L x 0.417" W (22.35mm x 10.60mm)	-	0.043" (1.10mm)	-
LTP180LF PTC RESET FUSE 24V 1.8A STRAP Littelfuse Inc.	6,416	-	RFQ	Datasheet	Strap	PolySwitch®, LTP	Bulk	Obsolete	Polymeric	24V	1.8 A	3.8 A	100 A	2.9 s	40 mOhms	120 mOhms	-	-40°C ~ 85°C	-	-	-	User Defined	1.437" L x 0.199" W (36.50mm x 5.05mm)	-	0.039" (1.00mm)	-
SMD1812P125TFA PTC RESET FUSE 15V 1.25A 1812 Littelfuse Inc.	8,796	-	RFQ	Datasheet	1812 (4532 Metric), Concave	POLY-FUSE®, SMD1812	Tape & Reel (TR)	Obsolete	Polymeric	15V	1.25 A	2.5 A	40 A	400 ms	70 mOhms	250 mOhms	-	-40°C ~ 85°C	-	-	-	Surface Mount	0.179" L x 0.128" W (4.55mm x 3.24mm)	-	0.039" (1.00mm)	-
SMD1812P150TFA PTC RESET FUSE 6V 1.5A 1812 Littelfuse Inc.	3,577	-	RFQ	Datasheet	1812 (4532 Metric), Concave	POLY-FUSE®, SMD1812	Tape & Reel (TR)	Obsolete	Polymeric	6V	1.5 A	3 A	40 A	500 ms	40 mOhms	110 mOhms	-	-40°C ~ 85°C	-	-	-	Surface Mount	0.179" L x 0.128" W (4.55mm x 3.24mm)	-	0.039" (1.00mm)	-
SMD1812P075TF/24A PTC RESET FUSE 24V 750MA 1812 Littelfuse Inc.	5,498	-	RFQ	Datasheet	1812 (4532 Metric), Concave	POLY-FUSE®, SMD1812	Tape & Reel (TR)	Obsolete	Polymeric	24V	750 mA	1.5 A	40 A	200 ms	110 mOhms	290 mOhms	-	-40°C ~ 85°C	-	-	-	Surface Mount	0.179" L x 0.128" W (4.55mm x 3.24mm)	-	0.045" (1.15mm)	-
1210L050YR-A PTC 13.2V POLYFUSE SURF MOUNT 12 Littelfuse Inc.	7,315	-	RFQ	Datasheet	1210 (3225 Metric), Concave	POLY-FUSE®, 1210L	Tape & Reel (TR)	Active	Polymeric	13.2V	500 mA	1 A	100 A	50 ms	250 mOhms	900 mOhms	-	-40°C ~ 85°C	-	-	-	Surface Mount	0.127" L x 0.101" W (3.22mm x 2.58mm)	-	0.033" (0.85mm)	-
NANOSMD450LR-2 PTC RESET FUSE 6V 4.5A 1206 Littelfuse Inc.	6,297	-	RFQ	Datasheet	1206 (3216 Metric)	PolySwitch®, microSMD	Tape & Reel (TR)	Obsolete	Polymeric	6V	4.5 A	9 A	50 A	2 s	2 mOhms	8 mOhms	-	-40°C ~ 80°C	-	-	-	Surface Mount	0.127" L x 0.063" W (3.22mm x 1.61mm)	-	0.032" (0.80mm)	-

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FREQUENTLY ASKED QUESTIONS

PTC Resettable Fuses FAQ

Common questions about filtering, comparing and sourcing PTC Resettable Fuses components.

How can I narrow the PTC Resettable Fuses selection?

Use the available manufacturer and technical parameter filters to reduce the product list. Compare the remaining part numbers against your electrical, package and application requirements.

Should I confirm the datasheet before selecting a part?

Yes. Always review the manufacturer datasheet to confirm ratings, package, operating conditions and other technical details before finalizing a component for your design.

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