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
RGEF300-2 PTC RESET FUSE 16V 3A RADIAL Littelfuse Inc.	2,387	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RGEF	Tape & Reel (TR)	Active	Polymeric	16V	3 A	5.1 A	100 A	1 s	38 mOhms	97.5 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.260" L x 0.098" W (6.60mm x 2.50mm)	0.433" (11.00mm)	-	0.199" (5.05mm)
1812L075/24DR PTC RESET FUSE 24V 750MA 1812 Littelfuse Inc.	10,845	-	RFQ	Datasheet	1812 (4532 Metric), Concave	POLY-FUSE®, 1812L	Tape & Reel (TR)	Active	Polymeric	24V	750 mA	1.5 A	100 A	200 ms	110 mOhms	290 mOhms	-	-40°C ~ 85°C	Automotive	AEC-Q200	-	Surface Mount	0.179" L x 0.128" W (4.55mm x 3.24mm)	-	0.061" (1.55mm)	-
AHEF300 PTC RESET FUSE 32V 3A RADIAL Littelfuse Inc.	9,394	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, AHEF	Bag	Active	Polymeric	32V	3 A	6 A	100 A	5 s	35 mOhms	110 mOhms	-	-40°C ~ 125°C	Automotive	AEC-Q200	-	Through Hole	0.402" L x 0.150" W (10.20mm x 3.80mm)	0.610" (15.50mm)	-	0.200" (5.08mm)
SMD030F-2018-2 PTC RESET FUSE 60V 300MA 2SMD Littelfuse Inc.	8,914	-	RFQ	Datasheet	2-SMD	PolySwitch®, SMD	Tape & Reel (TR)	Active	Polymeric	60V	300 mA	800 mA	20 A	1.5 s	500 mOhms	2.3 Ohms	-	-40°C ~ 85°C	-	-	-	Surface Mount	0.200" L x 0.180" W (5.08mm x 4.58mm)	-	0.070" (1.78mm)	-
RGEF800 PTC RESET FUSE 16V 8A RADIAL Littelfuse Inc.	3,927	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RGEF	Bag	Active	Polymeric	16V	8 A	13.6 A	100 A	5 s	5.6 mOhms	17.5 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.480" L x 0.098" W (12.20mm x 2.50mm)	0.823" (20.90mm)	-	0.199" (5.05mm)
RGEF500 PTC RESET FUSE 16V 5A RADIAL Littelfuse Inc.	1,901	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RGEF	Bag	Active	Polymeric	16V	5 A	8.5 A	100 A	2 s	15 mOhms	34 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.390" L x 0.098" W (9.90mm x 2.50mm)	0.563" (14.30mm)	-	0.199" (5.05mm)
RKEF250 PTC RESET FUSE 60V 2.5A RADIAL Littelfuse Inc.	20,648	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RKEF	Bag	Active	Polymeric	60V	2.5 A	5 A	40 A	15.6 s	40 mOhms	140 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.512" L x 0.150" W (13.00mm x 3.81mm)	0.740" (18.80mm)	-	0.200" (5.08mm)
2920L075DR PTC RESET FUSE 30V 750MA 2920 Littelfuse Inc.	6,995	-	RFQ	Datasheet	2920 (7351 Metric), Concave	POLY-FUSE®, 2920L	Tape & Reel (TR)	Active	Polymeric	30V	750 mA	1.5 A	40 A	300 ms	350 mOhms	1 Ohms	-	-40°C ~ 85°C	-	-	-	Surface Mount	0.289" L x 0.202" W (7.35mm x 5.12mm)	-	0.049" (1.25mm)	-
RHEF050-2 PTC RESET FUSE 30V 500MA RADIAL Littelfuse Inc.	5,631	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RHEF	Tape & Reel (TR)	Active	Polymeric	30V	500 mA	920 mA	40 A	2.5 s	480 mOhms	1.1 Ohms	-	-40°C ~ 125°C	-	-	-	Through Hole	0.291" Dia x 0.118" T (7.40mm x 3.00mm)	0.500" (12.70mm)	-	0.199" (5.05mm)
SRP175F PTC RESET FUSE 15V 1.75A STRAP Littelfuse Inc.	2,649	-	RFQ	Datasheet	Strap	PolySwitch®, SRP	Bulk	Active	Polymeric	15V	1.75 A	3.8 A	100 A	5 s	50 mOhms	120 mOhms	-	-40°C ~ 85°C	-	-	-	User Defined	0.866" L x 0.199" W (22.00mm x 5.05mm)	-	0.039" (1.00mm)	-

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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.

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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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