PTC Resettable Fuses

Use the filters and product table below to compare PTC Resettable Fuses components by manufacturer, availability, pricing reference and technical specifications. Review datasheets and key parameters to narrow the selection for your application.

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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
06R075BU PTC RESET FUSE 6V 750MA RADIAL Littelfuse Inc.	3,997	-	RFQ	Datasheet	Radial, Disc	POLY-FUSE®, USBR	Bulk	Obsolete	Polymeric	6V	750 mA	1.3 A	40 A	400 ms	100 mOhms	230 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.272" Dia x 0.118" T (6.90mm x 3.00mm)	0.449" (11.40mm)	-	0.201" (5.10mm)
250R120-R1ZR PTC RESET FUSE 60V 120MA RADIAL Littelfuse Inc.	6,541	-	RFQ	Datasheet	Radial, Disc	POLY-FUSE®, 250R	Tape & Box (TB)	Obsolete	Polymeric	60V (250V Int)	120 mA	240 mA	3 A	2.5 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)	-	0.201" (5.10mm)
250R120-R3U PTC RESET FUSE 60V 120MA RADIAL Littelfuse Inc.	2,714	-	RFQ	Datasheet	Radial, Disc	POLY-FUSE®, 250R	Bulk	Obsolete	Polymeric	60V (250V Int)	120 mA	240 mA	3 A	2.5 s	8 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)	-	0.201" (5.10mm)
250R120-R2U PTC RESET FUSE 60V 120MA RADIAL Littelfuse Inc.	7,946	-	RFQ	Datasheet	Radial, Disc	POLY-FUSE®, 250R	Bulk	Obsolete	Polymeric	60V (250V Int)	120 mA	240 mA	3 A	2.5 s	8 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)	-	0.201" (5.10mm)
250R120-RAU PTC RESET FUSE 60V 120MA RADIAL Littelfuse Inc.	5,591	-	RFQ	Datasheet	Radial, Disc	POLY-FUSE®, 250R	Bulk	Obsolete	Polymeric	60V (250V Int)	120 mA	240 mA	3 A	2.5 s	7 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)	-	0.201" (5.10mm)
250R120-R3ZR PTC RESET FUSE 60V 120MA RADIAL Littelfuse Inc.	2,117	-	RFQ	Datasheet	Radial, Disc	POLY-FUSE®, 250R	Tape & Box (TB)	Obsolete	Polymeric	60V (250V Int)	120 mA	240 mA	3 A	2.5 s	8 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)	-	0.201" (5.10mm)
250R120TZR PTC RESET FUSE 60V 120MA RADIAL Littelfuse Inc.	7,813	-	RFQ	Datasheet	Radial, Disc	POLY-FUSE®, 250R	Tape & Box (TB)	Obsolete	Polymeric	60V (250V Int)	120 mA	240 mA	3 A	2.5 s	7 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)	-	0.201" (5.10mm)
250R145-RAU PTC RESET FUSE 60V 145MA RADIAL Littelfuse Inc.	6,714	-	RFQ	Datasheet	Radial, Disc	POLY-FUSE®, 250R	Bulk	Obsolete	Polymeric	60V (250V Int)	145 mA	290 mA	3 A	2.5 s	3 Ohms	12 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)
250R120TU PTC RESET FUSE 60V 120MA RADIAL Littelfuse Inc.	8,131	-	RFQ	Datasheet	Radial, Disc	POLY-FUSE®, 250R	Bulk	Obsolete	Polymeric	60V (250V Int)	120 mA	240 mA	3 A	2.5 s	7 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)	-	0.201" (5.10mm)
250R120-RFZR PTC RESET FUSE 60V 120MA RADIAL Littelfuse Inc.	2,516	-	RFQ	Datasheet	Radial, Disc	POLY-FUSE®, 250R	Tape & Box (TB)	Obsolete	Polymeric	60V (250V Int)	120 mA	240 mA	3 A	2.5 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)	-	0.201" (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.