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
RUEF900 PTC RESET FUSE 30V 9A RADIAL Littelfuse Inc.	5,738	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RUEF	Bag	Active	Polymeric	30V	9 A	18 A	100 A	20 s	5 mOhms	20 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.949" L x 0.118" W (24.10mm x 3.00mm)	1.142" (29.00mm)	-	0.400" (10.15mm)
RXEF375 PTC RESET FUSE 72V 3.75A RADIAL Littelfuse Inc.	790	-	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	1.071" Dia x 0.118" T (27.20mm x 3.00mm)	1.252" (31.80mm)	-	0.400" (10.15mm)
0805L075SLYR PTC RESET FUSE 6V 750MA 0805 Littelfuse Inc.	23,696	-	RFQ	Datasheet	0805 (2012 Metric), Concave	POLY-FUSE®, LoRho	Tape & Reel (TR)	Active	Polymeric	6V	750 mA	1.5 A	50 A	200 ms	40 mOhms	160 mOhms	-	-40°C ~ 85°C	-	-	-	Surface Mount	0.083" L x 0.053" W (2.10mm x 1.35mm)	-	0.030" (0.75mm)	-
AHEF500 PTC RESET FUSE 32V 5A RADIAL Littelfuse Inc.	2,201	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, AHEF	Bag	Active	Polymeric	32V	5 A	10 A	100 A	9 s	15 mOhms	40 mOhms	-	-40°C ~ 125°C	Automotive	AEC-Q200	-	Through Hole	0.551" L x 0.150" W (14.00mm x 3.80mm)	0.949" (24.10mm)	-	0.199" (5.05mm)
RKEF500 PTC RESET FUSE 60V 5A RADIAL Littelfuse Inc.	11,046	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RKEF	Bag	Active	Polymeric	60V	5 A	10 A	40 A	28 s	12 mOhms	50 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.949" L x 0.118" W (24.10mm x 3.00mm)	1.142" (29.00mm)	-	0.400" (10.15mm)
LVR100S-240 PTC RESET FUSE 240V 1A RADIAL Littelfuse Inc.	3,435	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, LVR	Bulk	Active	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)
1206L050/24WR PTC RESET FUSE 24V 500MA 1206 Littelfuse Inc.	4,385	-	RFQ	Datasheet	1206 (3216 Metric), Concave	POLY-FUSE®, 1206L	Tape & Reel (TR)	Active	Polymeric	24V	500 mA	1 A	100 A	100 ms	150 mOhms	750 mOhms	-	-40°C ~ 85°C	Automotive	AEC-Q200	-	Surface Mount	0.126" L x 0.065" W (3.20mm x 1.65mm)	-	0.049" (1.25mm)	-
LVR125S-240 PTC RESET FUSE 240V 1.25A RADIAL Littelfuse Inc.	5,132	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, LVR	Bulk	Active	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)
0603L002/60YR PTC RESET FUSE 60V 20MA 0603 Littelfuse Inc.	7,096	-	RFQ	Datasheet	0603 (1608 Metric), Concave	POLY-FUSE®, 0603L	Tape & Reel (TR)	Active	Polymeric	60V	20 mA	60 mA	40 A	1 s	12 Ohms	70 Ohms	-	-40°C ~ 85°C	-	-	-	Surface Mount	0.063" L x 0.031" W (1.60mm x 0.80mm)	-	0.039" (1.00mm)	-
0603L001/60YR PTC RESET FUSE 60V 10MA 0603 Littelfuse Inc.	2,408	-	RFQ	Datasheet	0603 (1608 Metric), Concave	POLY-FUSE®, 0603L	Tape & Reel (TR)	Active	Polymeric	60V	10 mA	50 mA	40 A	1 s	15 Ohms	100 Ohms	-	-40°C ~ 85°C	-	-	-	Surface Mount	0.063" L x 0.031" W (1.60mm x 0.80mm)	-	0.039" (1.00mm)	-

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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.