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
16R1000GF PTC RESET FUSE 16V 10A RADIAL Littelfuse Inc.	2,028	-	RFQ	Datasheet	Radial, Disc	POLY-FUSE®, 16R	Bulk	Obsolete	Polymeric	16V	10 A	17 A	100 A	6 s	4 mOhms	10.2 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.650" L x 0.118" W (16.50mm x 3.00mm)	0.992" (25.20mm)	-	0.201" (5.10mm)
16R1200GH PTC RESET FUSE 16V 12A RADIAL Littelfuse Inc.	9,201	-	RFQ	Datasheet	Radial, Disc	POLY-FUSE®, 16R	Bulk	Obsolete	Polymeric	16V	12 A	20.4 A	100 A	7.5 s	3.3 mOhms	8.6 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.689" L x 0.138" W (17.50mm x 3.50mm)	1.102" (28.00mm)	-	0.402" (10.20mm)
72R020XU PTC RESET FUSE 72V 200MA RADIAL Littelfuse Inc.	5,921	-	RFQ	Datasheet	Radial, Disc	POLY-FUSE®, 72R	Bulk	Obsolete	Polymeric	72V	200 mA	400 mA	40 A	2.2 s	1.83 Ohms	4.4 Ohms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.291" Dia x 0.122" T (7.40mm x 3.10mm)	0.461" (11.70mm)	-	0.201" (5.10mm)
72R025XU PTC RESET FUSE 72V 250MA RADIAL Littelfuse Inc.	8,003	-	RFQ	Datasheet	Radial, Disc	POLY-FUSE®, 72R	Bulk	Obsolete	Polymeric	72V	250 mA	500 mA	40 A	2.5 s	1.25 Ohms	3 Ohms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.291" Dia x 0.122" T (7.40mm x 3.10mm)	0.500" (12.70mm)	-	0.201" (5.10mm)
72R030XU PTC RESET FUSE 72V 300MA RADIAL Littelfuse Inc.	4,255	-	RFQ	Datasheet	Radial, Disc	POLY-FUSE®, 72R	Bulk	Obsolete	Polymeric	72V	300 mA	600 mA	40 A	3 s	880 mOhms	2.1 Ohms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.291" Dia x 0.122" T (7.40mm x 3.10mm)	0.500" (12.70mm)	-	0.201" (5.10mm)
72R040XU PTC RESET FUSE 72V 400MA RADIAL Littelfuse Inc.	3,265	-	RFQ	Datasheet	Radial, Disc	POLY-FUSE®, 72R	Bulk	Obsolete	Polymeric	72V	400 mA	800 mA	40 A	3.8 s	550 mOhms	1.29 Ohms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.299" Dia x 0.122" T (7.60mm x 3.10mm)	0.532" (13.50mm)	-	0.201" (5.10mm)
72R050XU PTC RESET FUSE 72V 500MA RADIAL Littelfuse Inc.	9,559	-	RFQ	Datasheet	Radial, Disc	POLY-FUSE®, 72R	Bulk	Obsolete	Polymeric	72V	500 mA	1 A	40 A	4 s	500 mOhms	1.17 Ohms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.311" Dia x 0.122" T (7.90mm x 3.10mm)	0.539" (13.70mm)	-	0.201" (5.10mm)
72R065XU PTC RESET FUSE 72V 650MA RADIAL Littelfuse Inc.	4,000	-	RFQ	Datasheet	Radial, Disc	POLY-FUSE®, 72R	Bulk	Obsolete	Polymeric	72V	650 mA	1.3 A	40 A	5.3 s	310 mOhms	720 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.370" Dia x 0.122" T (9.40mm x 3.10mm)	0.571" (14.50mm)	-	0.201" (5.10mm)
72R075XU PTC RESET FUSE 72V 750MA RADIAL Littelfuse Inc.	5,324	-	RFQ	Datasheet	Radial, Disc	POLY-FUSE®, 72R	Bulk	Obsolete	Polymeric	72V	750 mA	1.5 A	40 A	6.3 s	250 mOhms	600 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.402" Dia x 0.122" T (10.20mm x 3.10mm)	0.598" (15.20mm)	-	0.201" (5.10mm)
72R090XU PTC RESET FUSE 72V 900MA RADIAL Littelfuse Inc.	4,620	-	RFQ	Datasheet	Radial, Disc	POLY-FUSE®, 72R	Bulk	Obsolete	Polymeric	72V	900 mA	1.8 A	40 A	7.2 s	200 mOhms	470 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.441" Dia x 0.122" T (11.20mm x 3.10mm)	0.622" (15.80mm)	-	0.201" (5.10mm)

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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.

Can Winsun (HK) Electronics help source a specific PTC Resettable Fuses part number?

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

Do you support BOM, shortage or alternative-part requirements?

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