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
RUEF135S PTC RESET FUSE 30V 1.35A RADIAL Littelfuse Inc.	144	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RUEF	Bag	Active	Polymeric	30V	1.35 A	2.7 A	100 A	7.3 s	40 mOhms	130 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.350" L x 0.118" W (8.90mm x 3.00mm)	0.532" (13.50mm)	-	0.199" (5.05mm)
RUEF185S PTC RESET FUSE 30V 1.85A RADIAL Littelfuse Inc.	477	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RUEF	Bag	Active	Polymeric	30V	1.85 A	3.7 A	100 A	8.7 s	30 mOhms	90 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.402" Dia x 0.118" T (10.20mm x 3.00mm)	0.618" (15.70mm)	-	0.199" (5.05mm)
RGEF800-1 PTC RESET FUSE 16V 8A RADIAL Littelfuse Inc.	461	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RGEF	Bag	Active	Polymeric	16V	8 A	13.6 A	100 A	5 s	5.6 mOhms	17.5 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.480" L x 0.098" W (12.20mm x 2.50mm)	0.823" (20.90mm)	-	0.199" (5.05mm)
AGRF900 PTC RESET FUSE 16V 9A RADIAL Littelfuse Inc.	217	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, AGRF	Bag	Active	Polymeric	16V	9 A	16.5 A	100 A	6 s	4.1 mOhms	13.5 mOhms	-	-40°C ~ 85°C	Automotive	AEC-Q200	-	Through Hole	0.551" L x 0.118" W (14.00mm x 3.00mm)	0.906" (23.00mm)	-	0.199" (5.05mm)
RGEF900-1 PTC RESET FUSE 16V 9A RADIAL Littelfuse Inc.	122	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RGEF	Bag	Active	Polymeric	16V	9 A	15.3 A	100 A	5.5 s	4.7 mOhms	13.5 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.532" L x 0.100" W (13.50mm x 2.50mm)	0.854" (21.70mm)	-	0.199" (5.05mm)
AHRF750 PTC RESET FUSE 16V 7.5A RADIAL Littelfuse Inc.	500	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, AHRF	Bag	Active	Polymeric	16V	7.5 A	14.8 A	100 A	8 s	7.4 mOhms	22 mOhms	-	-40°C ~ 125°C	Automotive	AEC-Q200	-	Through Hole	0.551" L x 0.118" W (14.00mm x 3.00mm)	0.925" (23.50mm)	-	0.199" (5.05mm)
RXEF090S PTC RESET FUSE 72V 900MA RADIAL Littelfuse Inc.	937	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RXEF	Bag	Active	Polymeric	72V	900 mA	1.8 A	40 A	7.2 s	200 mOhms	470 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.441" Dia x 0.118" T (11.20mm x 3.00mm)	0.622" (15.80mm)	-	0.199" (5.05mm)
60R050XUL25 PTC 60V POLYFUSE RAD LEADS 2.5CM Littelfuse Inc.	335	-	RFQ	Datasheet	Radial, Disc	POLY-FUSE® 60R	Bulk	Active	Polymeric	60V	500 mA	1 A	40 A	4 s	500 mOhms	1.17 Ohms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.311" Dia x 0.122" T (7.90mm x 3.10mm)	0.539" (13.70mm)	-	0.201" (5.10mm)
RXEF135K PTC RESET FUSE 72V 1.35A RADIAL Littelfuse Inc.	349	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RXEF	Bag	Active	Polymeric	72V	1.35 A	2.7 A	40 A	9.6 s	120 mOhms	300 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.535" Dia x 0.118" T (13.58mm x 3.00mm)	0.776" (19.70mm)	-	0.199" (5.05mm)
RHEF550 PTC RESET FUSE 16V 5.5A RADIAL Littelfuse Inc.	4,823	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RHEF	Bag	Active	Polymeric	16V	5.5 A	10 A	100 A	6 s	15 mOhms	37 mOhms	-	-40°C ~ 125°C	-	-	-	Through Hole	0.441" Dia x 0.118" T (11.20mm x 3.00mm)	0.744" (18.90mm)	-	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.