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
2920L260/24DR PTC RESET FUSE 24V 2.6A 2920 Littelfuse Inc.	476	-	RFQ	Datasheet	2920 (7351 Metric), Concave	POLY-FUSE®, 2920L	Tape & Reel (TR)	Active	Polymeric	24V	2.6 A	5 A	40 A	10 s	25 mOhms	75 mOhms	-	-40°C ~ 85°C	-	-	-	Surface Mount	0.290" L x 0.202" W (7.36mm x 5.12mm)	-	0.049" (1.25mm)	-
RXEF300 PTC RESET FUSE 72V 3A RADIAL Littelfuse Inc.	9,263	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RXEF	Bag	Active	Polymeric	72V	3 A	6 A	40 A	19.8 s	40 mOhms	100 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.941" Dia x 0.118" T (23.90mm x 3.00mm)	1.126" (28.60mm)	-	0.400" (10.15mm)
1812L260/16MR PTC RESET FUSE 16V 2.6A 1812 Littelfuse Inc.	8,508	-	RFQ	Datasheet	1812 (4532 Metric), Concave	POLY-FUSE®, 1812L	Tape & Reel (TR)	Active	Polymeric	16V	2.6 A	5 A	100 A	5 s	15 mOhms	50 mOhms	-	-40°C ~ 85°C	-	-	-	Surface Mount	0.186" L x 0.131" W (4.72mm x 3.33mm)	-	0.079" (2.00mm)	-
NANOASMDCH035F/30-2 PTC RESET FUSE 30V 350MA 1206 Littelfuse Inc.	8,431	-	RFQ	Datasheet	1206 (3216 Metric), Concave	PolySwitch®, ASMD	Tape & Reel (TR)	Active	Polymeric	30V	350 mA	1.75 A	20 A	200 ms	400 mOhms	2.2 Ohms	-	-40°C ~ 125°C	Automotive	AEC-Q200	-	Surface Mount	0.126" L x 0.062" W (3.20mm x 1.58mm)	-	0.045" (1.14mm)	-
3425L300/36MR 3425L PPTC Littelfuse Inc.	4,218	-	RFQ	Datasheet	Nonstandard SMD	3425L	Tape & Reel (TR)	Active	Polymeric	36V	3 A	6 A	20 A	20 s	10 mOhms	60 mOhms	-	-40°C ~ 85°C	-	-	-	Surface Mount	0.341" L x 0.250" W (8.65mm x 6.35mm)	-	0.055" (1.40mm)	-
3425L200/60MR 3425L PPTC Littelfuse Inc.	2,134	-	RFQ	Datasheet	Nonstandard SMD	3425L	Tape & Reel (TR)	Active	Polymeric	60V	2 A	4 A	20 A	10 s	40 mOhms	200 mOhms	-	-40°C ~ 85°C	-	-	-	Surface Mount	0.341" L x 0.250" W (8.65mm x 6.35mm)	-	0.071" (1.80mm)	-
LR4-450F PTC RESET FUSE 20V 4.5A STRAP Littelfuse Inc.	6,004	-	RFQ	Datasheet	Strap	PolySwitch®, LR4	Bag	Active	Polymeric	20V	4.5 A	8.9 A	100 A	5 s	11 mOhms	28 mOhms	-	-40°C ~ 85°C	-	-	-	User Defined	0.984" L x 0.413" W (25.00mm x 10.50mm)	-	0.039" (1.00mm)	-
NANOSMDCH030F/24-02 PTC RESET FUSE 24V 300MA 1206 Littelfuse Inc.	12,722	-	RFQ	Datasheet	1206 (3216 Metric)	PolySwitch®, nanoSMD	Tape & Reel (TR)	Active	Polymeric	24V	300 mA	820 mA	10 A	100 ms	500 mOhms	1.95 Ohms	-	-40°C ~ 125°C	-	-	-	Surface Mount	0.134" L x 0.071" W (3.40mm x 1.80mm)	-	0.049" (1.25mm)	-
LVR075S-240 PTC RESET FUSE 240V 750MA RADIAL Littelfuse Inc.	6,626	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, LVR	Bulk	Active	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)
LVR055S PTC RESET FUSE 240V 550MA RADIAL Littelfuse Inc.	1,000	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, LVR	Bulk	Active	Polymeric	240V (265V Int)	550 mA	1.25 A	7 A	26 s	450 mOhms	1.45 Ohms	-	-20°C ~ 85°C	-	-	-	Through Hole	0.551" L x 0.161" W (14.00mm x 4.10mm)	0.854" (21.70mm)	-	0.200" (5.08mm)

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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.