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
1812L035/60MR-A PTC 60V POLYFUSE SMD 1812 0.35A Littelfuse Inc.	1,000	-	RFQ	Datasheet	1812 (4532 Metric), Concave	POLY-FUSE®, 1812L	Tape & Reel (TR)	Active	Polymeric	60V	350 mA	700 mA	10 A	150 ms	400 mOhms	1.7 Ohms	-	-40°C ~ 85°C	-	-	-	Surface Mount	0.179" L x 0.128" W (4.55mm x 3.24mm)	-	0.071" (1.80mm)	-
1206L500SL-VWR PTC RESET FUSE 5.0A 6V 1206 Littelfuse Inc.	3,891	-	RFQ	Datasheet	1206 (3216 Metric), Concave	POLY-FUSE®, LoRho	Tape & Reel (TR)	Active	Polymeric	6V	5 A	10 A	50 A	2 s	1 mOhms	12 mOhms	-	-40°C ~ 85°C	-	-	-	Surface Mount	0.126" L x 0.065" W (3.20mm x 1.65mm)	-	0.039" (1.00mm)	-
RUSBF075-2 PTC RESET FUSE 6V 750MA RADIAL Littelfuse Inc.	292	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RUSBF	Tape & Reel (TR)	Active	Polymeric	6V	750 mA	1.3 A	40 A	400 ms	110 mOhms	230 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.272" L x 0.118" W (6.90mm x 3.00mm)	0.449" (11.40mm)	-	0.199" (5.05mm)
RXEF010-1 PTC RESET FUSE 60V 100MA RADIAL Littelfuse Inc.	169	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RXEF	Bag	Active	Polymeric	60V	100 mA	200 mA	40 A	4 s	2.5 Ohms	7.5 Ohms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.291" Dia x 0.118" T (7.40mm x 3.00mm)	0.457" (11.60mm)	-	0.199" (5.05mm)
AGRF400 PTC RESET FUSE 16V 4A RADIAL Littelfuse Inc.	479	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, AGRF	Bag	Active	Polymeric	16V	4 A	7.6 A	100 A	2 s	18.6 mOhms	61 mOhms	-	-40°C ~ 85°C	Automotive	AEC-Q200	-	Through Hole	0.350" L x 0.118" W (8.90mm x 3.00mm)	0.555" (14.10mm)	-	0.199" (5.05mm)
RGEF700K PTC RESET FUSE 16V 7A RADIAL Littelfuse Inc.	200	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RGEF	Bag	Active	Polymeric	16V	7 A	11.9 A	100 A	3.5 s	7.7 mOhms	20 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.421" L x 0.098" W (10.70mm x 2.50mm)	0.874" (22.20mm)	-	0.199" (5.05mm)
AGRF600 PTC RESET FUSE 16V 6A RADIAL Littelfuse Inc.	472	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, AGRF	Bag	Active	Polymeric	16V	6 A	10.7 A	100 A	3.5 s	9.5 mOhms	28 mOhms	-	-40°C ~ 85°C	Automotive	AEC-Q200	-	Through Hole	0.421" L x 0.118" W (10.70mm x 3.00mm)	0.724" (18.40mm)	-	0.199" (5.05mm)
AHRF400 PTC RESET FUSE 16V 4A RADIAL Littelfuse Inc.	408	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, AHRF	Bag	Active	Polymeric	16V	4 A	7.4 A	100 A	5 s	21 mOhms	60 mOhms	-	-40°C ~ 125°C	Automotive	AEC-Q200	-	Through Hole	0.394" L x 0.118" W (10.00mm x 3.00mm)	0.591" (15.00mm)	-	0.199" (5.05mm)
RUEF110S PTC RESET FUSE 30V 1.1A RADIAL Littelfuse Inc.	189	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RUEF	Bag	Active	Polymeric	30V	1.1 A	2.2 A	100 A	6.6 s	70 mOhms	170 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.291" L x 0.118" W (7.40mm x 3.00mm)	0.559" (14.20mm)	-	0.199" (5.05mm)
RXEF040S PTC RESET FUSE 72V 400MA RADIAL Littelfuse Inc.	115	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RXEF	Bag	Active	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 0.118" T (7.60mm x 3.00mm)	0.532" (13.50mm)	-	0.199" (5.05mm)

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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.