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
TRF250-120T-R1-B-0.5 PTC RESET FUSE 60V 120MA RADIAL Littelfuse Inc.	3,903	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, TRF250	Bag	Active	Polymeric	60V (250V Int)	120 mA	240 mA	3 A	1 s	6 Ohms	16 Ohms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.256" L x 0.181" W (6.50mm x 4.60mm)	0.433" (11.00mm)	-	0.197" (5.00mm)
250R145ZR PTC RESET FUSE 60V 145MA RADIAL Littelfuse Inc.	9,512	-	RFQ	Datasheet	Radial, Disc	POLY-FUSE®, 250R	Cut Tape (CT)	Active	Polymeric	60V (250V Int)	145 mA	290 mA	3 A	2.5 s	3 Ohms	14 Ohms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.256" L x 0.181" W (6.50mm x 4.60mm)	0.433" (11.00mm)	-	0.201" (5.10mm)
LR4-260SF PTC RESET FUSE 15V 2.6A STRAP Littelfuse Inc.	9,327	-	RFQ	Datasheet	Strap	PolySwitch®, LR4	Bag	Active	Polymeric	15V	2.6 A	5.8 A	100 A	5 s	20 mOhms	63 mOhms	-	-40°C ~ 85°C	-	-	-	User Defined	0.866" L x 0.205" W (22.00mm x 5.20mm)	-	-	-
AGRF800 PTC RESET FUSE 16V 8A RADIAL Littelfuse Inc.	3,214	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, AGRF	Bag	Active	Polymeric	16V	8 A	15 A	100 A	5.5 s	4.9 mOhms	17.5 mOhms	-	-40°C ~ 85°C	Automotive	AEC-Q200	-	Through Hole	0.500" L x 0.118" W (12.70mm x 3.00mm)	0.874" (22.20mm)	-	0.199" (5.05mm)
TRF250-184 PTC RESET FUSE 100V 184MA RADIAL Littelfuse Inc.	4,719	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, TRF250	Bag	Active	Polymeric	100V (250V Int)	184 mA	1 A	10 A	1.3 s	1.2 Ohms	3.1 Ohms	-	0°C ~ 85°C	-	-	-	Through Hole	0.303" Dia x 0.181" T (7.70mm x 4.60mm)	0.413" (10.50mm)	-	0.197" (5.00mm)
RXEF375K PTC RESET FUSE 72V 3.75A RADIAL Littelfuse Inc.	7,924	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RXEF	Bag	Active	Polymeric	72V	3.75 A	7.5 A	40 A	24 s	30 mOhms	80 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	1.035" Dia x 0.118" T (26.30mm x 3.00mm)	1.224" (31.10mm)	-	0.400" (10.15mm)
RGEF1400-1 PTC RESET FUSE 16V 14A RADIAL Littelfuse Inc.	3,085	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RGEF	Bag	Active	Polymeric	16V	14 A	23.8 A	100 A	9 s	2.6 mOhms	6.4 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.925" L x 0.114" W (23.50mm x 2.90mm)	1.098" (27.90mm)	-	0.400" (10.15mm)
RGEF1200-2 PTC RESET FUSE 16V 12A RADIAL Littelfuse Inc.	6,087	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RGEF	Tape & Reel (TR)	Active	Polymeric	16V	12 A	20.4 A	100 A	7.5 s	3.3 mOhms	8.6 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.670" L x 0.115" W (16.95mm x 2.90mm)	1.102" (28.00mm)	-	0.400" (10.15mm)
16R800GF PTC RESET FUSE 16V 8A RADIAL Littelfuse Inc.	6,196	-	RFQ	Datasheet	Radial, Disc	POLY-FUSE®, 16R	Bulk	Active	Polymeric	16V	8 A	13.6 A	100 A	5 s	5.6 mOhms	17.5 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.500" L x 0.118" W (12.70mm x 3.00mm)	0.823" (20.90mm)	-	0.201" (5.10mm)
LVR125K-240 PTC RESET FUSE Littelfuse Inc.	1,219	-	RFQ	Datasheet	Radial, Disc	LVR	Bulk	Active	Polymeric	240V (265V Int)	1.25 A	2.5 A	12.5 A	23 s	165 mOhms	440 mOhms	253 mOhms	-20°C ~ 85°C	-	-	-	Through Hole	0.835" Dia (21.20mm)	1.252" (31.80mm)	-	0.400" (10.15mm)

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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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Yes. Send the exact manufacturer part number and required quantity for availability, lead-time and quotation support.

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Yes. You can submit a BOM or shortage list for sourcing assistance. Where appropriate, our team can also help review possible alternative-part options.