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
250R145TZR PTC RESET FUSE 60V 145MA RADIAL Littelfuse Inc.	6,506	-	RFQ	Datasheet	Radial, Disc	POLY-FUSE®, 250R	Tape & Box (TB)	Obsolete	Polymeric	60V (250V Int)	145 mA	290 mA	3 A	2.5 s	5.4 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)
16R160BU PTC RESET FUSE 16V 1.6A RADIAL Littelfuse Inc.	7,368	-	RFQ	Datasheet	Radial, Disc	POLY-FUSE®, USBR	Bulk	Obsolete	Polymeric	16V	1.6 A	3.2 A	40 A	9 s	30 mOhms	110 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.350" L x 0.118" W (8.90mm x 3.00mm)	0.598" (15.20mm)	-	0.201" (5.10mm)
16R185BU PTC RESET FUSE 16V 1.85A RADIAL Littelfuse Inc.	7,324	-	RFQ	Datasheet	Radial, Disc	POLY-FUSE®, USBR	Bulk	Obsolete	Polymeric	16V	1.85 A	3.7 A	40 A	10 s	30 mOhms	90 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.402" L x 0.118" W (10.20mm x 3.00mm)	0.618" (15.70mm)	-	0.201" (5.10mm)
16R250BU PTC RESET FUSE 16V 2.5A RADIAL Littelfuse Inc.	4,514	-	RFQ	Datasheet	Radial, Disc	POLY-FUSE®, USBR	Bulk	Obsolete	Polymeric	16V	2.5 A	5 A	40 A	40 s	20 mOhms	60 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.449" L x 0.118" W (11.40mm x 3.00mm)	0.720" (18.30mm)	-	0.201" (5.10mm)
16R135BU PTC RESET FUSE 16V 1.35A RADIAL Littelfuse Inc.	6,600	-	RFQ	Datasheet	Radial, Disc	POLY-FUSE®, USBR	Bulk	Obsolete	Polymeric	16V	1.35 A	2.7 A	40 A	4.5 s	40 mOhms	120 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.350" L x 0.118" W (8.90mm x 3.00mm)	0.532" (13.50mm)	-	0.201" (5.10mm)
16R090BU PTC RESET FUSE 16V 900MA RADIAL Littelfuse Inc.	9,458	-	RFQ	Datasheet	Radial, Disc	POLY-FUSE®, USBR	Bulk	Obsolete	Polymeric	16V	900 mA	1.8 A	40 A	1.2 s	70 mOhms	180 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.291" L x 0.118" W (7.40mm x 3.00mm)	0.480" (12.20mm)	-	0.201" (5.10mm)
16R110BU PTC RESET FUSE 16V 1.1A RADIAL Littelfuse Inc.	9,491	-	RFQ	Datasheet	Radial, Disc	POLY-FUSE®, USBR	Bulk	Obsolete	Polymeric	16V	1.1 A	2.2 A	40 A	2.3 s	50 mOhms	140 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.291" L x 0.118" W (7.40mm x 3.00mm)	0.559" (14.20mm)	-	0.201" (5.10mm)
LVR075S PTC RESET FUSE 240V 750MA RADIAL Littelfuse Inc.	4,165	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, LVR	Bulk	Obsolete	Polymeric	240V (265V Int)	750 mA	1.5 A	7.5 A	18 s	316 mOhms	839 mOhms	-	-20°C ~ 85°C	-	-	-	Through Hole	0.450" L x 0.189" W (11.43mm x 4.80mm)	0.921" (23.40mm)	-	0.200" (5.08mm)
LVR100S PTC RESET FUSE 240V 1A RADIAL Littelfuse Inc.	2,661	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, LVR	Bulk	Obsolete	Polymeric	240V (265V Int)	1 A	2 A	10 A	21 s	218 mOhms	580 mOhms	-	-20°C ~ 85°C	-	-	-	Through Hole	0.736" Dia x 0.201" T (18.70mm x 5.10mm)	0.961" (24.40mm)	-	0.400" (10.15mm)
LVR125S PTC RESET FUSE 240V 1.25A RADIAL Littelfuse Inc.	6,809	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, LVR	Bulk	Obsolete	Polymeric	240V (265V Int)	1.25 A	2.5 A	12.5 A	23 s	165 mOhms	440 mOhms	-	-20°C ~ 85°C	-	-	-	Through Hole	0.835" Dia x 0.209" T (21.20mm x 5.30mm)	1.079" (27.40mm)	-	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.

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.