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
TRF600-160 PTC RESET FUSE 250V 160MA RADIAL Littelfuse Inc.	765	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, TRF600	Bulk	Active	Polymeric	250V (600V Int)	160 mA	320 mA	60 A	18 s	4 Ohms	18 Ohms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.630" L x 0.236" W (16.00mm x 6.00mm)	0.496" (12.60mm)	-	0.197" (5.00mm)
LR4-600F PTC RESET FUSE 20V 6A STRAP Littelfuse Inc.	9,666	-	RFQ	Datasheet	Strap	PolySwitch®, LR4	Bag	Active	Polymeric	20V	6 A	11.7 A	100 A	5 s	7 mOhms	19 mOhms	-	-40°C ~ 85°C	-	-	-	User Defined	0.984" L x 0.559" W (25.00mm x 14.20mm)	-	0.039" (1.00mm)	-
RGEF1400 PTC RESET FUSE 16V 14A RADIAL Littelfuse Inc.	293	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RGEF	Bag	Active	Polymeric	16V	14 A	23.8 A	100 A	9 s	2.6 mOhms	6.4 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.925" L x 0.114" W (23.50mm x 2.90mm)	1.102" (28.00mm)	-	0.400" (10.15mm)
LVR055K PTC RESET FUSE 240V 550MA RADIAL Littelfuse Inc.	1,707	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, LVR	Bag	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)	0.822" (20.87mm)	-	0.199" (5.05mm)
LR4-550F PTC RESET FUSE 20V 5.5A STRAP Littelfuse Inc.	190	-	RFQ	Datasheet	Strap	PolySwitch®, LR4	Bag	Active	Polymeric	20V	5.5 A	10.5 A	100 A	5 s	9 mOhms	22 mOhms	-	-40°C ~ 85°C	-	-	-	User Defined	1.417" L x 0.283" W (36.00mm x 7.20mm)	-	0.039" (1.00mm)	-
1210L010/90WR 1210L Littelfuse Inc.	1,329	-	RFQ	Datasheet	1210 (3225 Metric), Concave	PolySwitch® 1210L	Tape & Reel (TR)	Active	Polymeric	90V	100 mA	250 mA	10 A	300 ms	1.5 Ohms	15 Ohms	-	-40°C ~ 85°C	-	-	-	Surface Mount	0.127" L x 0.101" W (3.22mm x 2.58mm)	-	0.049" (1.25mm)	-
1210L020/72WR POLYSWITCH RESETTABLE PPTC Littelfuse Inc.	722	-	RFQ	Datasheet	1210 (3225 Metric), Concave	POLY-FUSE®, 1210L	Tape & Reel (TR)	Active	Polymeric	72V	200 mA	400 mA	10 A	500 ms	800 mOhms	5 Ohms	-	-40°C ~ 85°C	-	-	-	Surface Mount	0.127" L x 0.101" W (3.22mm x 2.58mm)	-	0.039" (1.00mm)	-
1210L035/60PR POLYSWITCH RESETTABLE PPTC Littelfuse Inc.	518	-	RFQ	Datasheet	1210 (3225 Metric), Concave	POLY-FUSE®, 1210L	Tape & Reel (TR)	Active	Polymeric	60V	350 mA	700 mA	10 A	1 s	320 mOhms	1.5 Ohms	-	-40°C ~ 85°C	-	-	-	Surface Mount	0.127" L x 0.101" W (3.22mm x 2.58mm)	-	0.059" (1.50mm)	-
60R185XMR PTC RESET FUSE 60V 1.85A RADIAL Littelfuse Inc.	6,212	-	RFQ	Datasheet	Radial, Disc	POLY-FUSE®, 60R	Cut Tape (CT)	Active	Polymeric	60V	1.85 A	3.7 A	40 A	12.6 s	80 mOhms	190 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.660" Dia x 0.122" T (16.76mm x 3.10mm)	0.906" (23.00mm)	-	0.201" (5.10mm)
30R500UF PTC RESET FUSE 30V 5A RADIAL Littelfuse Inc.	11,269	-	RFQ	Datasheet	Radial, Disc	POLY-FUSE®, 30R	Bulk	Active	Polymeric	30V	5 A	10 A	40 A	14.5 s	10 mOhms	50 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.551" L x 0.118" W (14.00mm x 3.00mm)	1.008" (25.60mm)	-	0.402" (10.20mm)

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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.

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Yes. Send the exact manufacturer part number and required quantity for availability, lead-time and quotation support.

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Yes. You can submit a BOM or shortage list for sourcing assistance. Where appropriate, our team can also help review possible alternative-part options.