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
RUEF400 PTC RESET FUSE 30V 4A RADIAL Littelfuse Inc.	8,941	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RUEF	Bag	Active	Polymeric	30V	4 A	8 A	100 A	12.7 s	10 mOhms	50 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.551" L x 0.118" W (14.00mm x 3.00mm)	0.760" (19.30mm)	-	0.199" (5.05mm)
2920L050DR PTC RESET FUSE 60V 500MA 2920 Littelfuse Inc.	8,483	-	RFQ	Datasheet	2920 (7351 Metric), Concave	POLY-FUSE®, 2920L	Tape & Reel (TR)	Active	Polymeric	60V	500 mA	1 A	10 A	4 s	350 mOhms	1.4 Ohms	-	-40°C ~ 85°C	-	-	-	Surface Mount	0.289" L x 0.202" W (7.35mm x 5.12mm)	-	0.049" (1.25mm)	-
2016L300/16MR PTC RESET FUSE 16V 3A 2016 Littelfuse Inc.	5,590	-	RFQ	Datasheet	2016 (5041 Metric), Concave	POLY-FUSE®, 2016L	Tape & Reel (TR)	Active	Polymeric	16V	3 A	5 A	40 A	10 s	15 mOhms	48 mOhms	-	-40°C ~ 85°C	-	-	-	Surface Mount	0.200" L x 0.160" W (5.08mm x 4.07mm)	-	0.045" (1.15mm)	-
LVR016S PTC RESET FUSE 240V 160MA RADIAL Littelfuse Inc.	8,504	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, LVR	Bulk	Active	Polymeric	240V (265V Int)	160 mA	370 mA	2 A	15 s	2.5 Ohms	7.8 Ohms	-	-20°C ~ 85°C	-	-	-	Through Hole	0.390" Dia x 0.150" T (9.90mm x 3.80mm)	0.492" (12.50mm)	-	0.200" (5.08mm)
SMDC185F/33-2 PTC RESET FUSE 33V 1.85A 2920 Littelfuse Inc.	7,748	-	RFQ	Datasheet	2920 (7351 Metric), Concave	SMDC	Tape & Reel (TR)	Active	Polymeric	33V	1.85 A	3.7 A	40 A	2.5 s	-	-	-	-	-	-	-	Surface Mount	0.295" L x 0.201" W (7.50mm x 5.10mm)	-	0.047" (1.20mm)	-
FEMTOSMDC008F-2 PTC RESET FUSE 12V 80MA 0603 Littelfuse Inc.	3,227	-	RFQ	Datasheet	0603 (1608 Metric), Concave	PolySwitch®, femtoSMDC	Tape & Reel (TR)	Active	Polymeric	12V	80 mA	200 mA	40 A	100 ms	2.8 Ohms	14 Ohms	-	-	-	-	-	Surface Mount	0.063" L x 0.032" W (1.60mm x 0.80mm)	-	0.033" (0.85mm)	-
RUEF500 PTC RESET FUSE 30V 5A RADIAL Littelfuse Inc.	6,895	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RUEF	Bag	Active	Polymeric	30V	5 A	10 A	100 A	14.5 s	10 mOhms	50 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.551" L x 0.120" W (14.00mm x 3.00mm)	0.949" (24.10mm)	-	0.400" (10.15mm)
1812L200/16DR PTC RESET FUSE 16V 2A 1812 Littelfuse Inc.	6,793	-	RFQ	Datasheet	1812 (4532 Metric), Concave	POLY-FUSE®, 1812L	Tape & Reel (TR)	Active	Polymeric	16V	2 A	3.5 A	100 A	2 s	20 mOhms	70 mOhms	-	-40°C ~ 85°C	-	-	-	Surface Mount	0.179" L x 0.128" W (4.55mm x 3.24mm)	-	0.047" (1.20mm)	-
TRF600-150 PTC RESET FUSE 250V 150MA RADIAL Littelfuse Inc.	3,282	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, TRF600	Bag	Active	Polymeric	250V (600V Int)	150 mA	300 mA	40 A	4 s	6 Ohms	17 Ohms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.354" L x 0.181" W (9.00mm x 4.60mm)	0.492" (12.50mm)	-	0.197" (5.00mm)
0603L300SLYR PTC RESET FUSE 3.0A 6V 0603 Littelfuse Inc.	2,032	-	RFQ	Datasheet	0603 (1608 Metric), Concave	POLY-FUSE®, LoRho	Tape & Reel (TR)	Active	Polymeric	6V	3 A	6 A	50 A	5 s	3 mOhms	30 mOhms	-	-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.