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
RGEF400-AP PTC RESET FUSE 16V 4A RADIAL Littelfuse Inc.	1,103	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RGEF	Cut Tape (CT)	Active	Polymeric	16V	4 A	6.8 A	100 A	1.7 s	21 mOhms	60 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.331" L x 0.098" W (8.40mm x 2.50mm)	0.504" (12.80mm)	-	0.199" (5.05mm)
AGRF700-2 PTC RESET FUSE 16V 7A RADIAL Littelfuse Inc.	1,448	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, AGRF	Tape & Reel (TR)	Active	Polymeric	16V	7 A	13.2 A	100 A	4 s	6.6 mOhms	20 mOhms	-	-40°C ~ 85°C	Automotive	AEC-Q200	-	Through Hole	0.441" L x 0.118" W (11.20mm x 3.00mm)	0.827" (21.00mm)	-	0.199" (5.05mm)
RHEF1100 PTC RESET FUSE 16V 11A RADIAL Littelfuse Inc.	3,250	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RHEF	Bag	Active	Polymeric	16V	11 A	20 A	100 A	11 s	5.5 mOhms	13 mOhms	-	-40°C ~ 125°C	-	-	-	Through Hole	0.827" L x 0.118" W (21.00mm x 3.00mm)	1.028" (26.10mm)	-	0.400" (10.15mm)
SMD150F-2018-2 PTC RESET FUSE 15V 1.5A 2SMD Littelfuse Inc.	8,180	-	RFQ	Datasheet	2-SMD	PolySwitch®, SMD	Tape & Reel (TR)	Active	Polymeric	15V	1.5 A	3 A	40 A	5 s	60 mOhms	-	-	-40°C ~ 85°C	-	-	-	Surface Mount	0.200" L x 0.180" W (5.08mm x 4.58mm)	-	0.060" (1.52mm)	-
RUSBF250-2 PTC RESET FUSE 16V 2.5A RADIAL Littelfuse Inc.	2,492	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RUSBF	Tape & Reel (TR)	Active	Polymeric	16V	2.5 A	5 A	40 A	40 s	20 mOhms	60 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.449" L x 0.118" W (11.40mm x 3.00mm)	0.720" (18.30mm)	-	0.118" (3.00mm)
TRF250-080T-AP PTC RESET FUSE Littelfuse Inc.	1,270	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, TRF250	Strip	Active	Polymeric	60V (250V Int)	80 mA	160 mA	3 A	4 s	15 Ohms	33 Ohms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.228" Dia x 0.354" T (5.80mm x 9.00mm)	0.748" (19.00mm)	-	0.197" (5.00mm)
TCF250-145T-B-0.5 PTC RESET FUSE 60V 145MA SMD Littelfuse Inc.	2,490	-	RFQ	Datasheet	Nonstandard SMD	PolySwitch®, TCF250	Bag	Active	Polymeric	60V (250V Int)	145 mA	290 mA	3 A	1 s	5 Ohms	14 Ohms	-	-40°C ~ 85°C	-	-	-	Surface Mount	0.217" L x 0.217" W (5.50mm x 5.50mm)	-	0.091" (2.30mm)	-
ASMD030F-2 PTC RESET FUSE 60V 230MA 2SMD Littelfuse Inc.	2,965	-	RFQ	Datasheet	2-SMD	PolySwitch®, ASMD	Tape & Reel (TR)	Active	Polymeric	60V	230 mA	590 mA	10 A	12 s	980 mOhms	4.8 Ohms	-	-40°C ~ 85°C	Automotive	AEC-Q200	-	Surface Mount	0.290" L x 0.202" W (7.36mm x 5.12mm)	-	0.125" (3.18mm)	-
LVR012K-2 PTC RESET FUSE 240V 120MA RADIAL Littelfuse Inc.	3,500	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, LVR	Tape & Reel (TR)	Active	Polymeric	240V (265V Int)	120 mA	300 mA	1.2 A	15 s	3 Ohms	12 Ohms	-	-20°C ~ 85°C	-	-	-	Through Hole	0.327" Dia x 0.150" T (8.30mm x 3.80mm)	0.508" (12.90mm)	-	0.200" (5.08mm)
ASMD250F-2 PTC RESET FUSE 16V 1.97A 2SMD Littelfuse Inc.	1,435	-	RFQ	Datasheet	2-SMD	PolySwitch®, ASMD	Tape & Reel (TR)	Active	Polymeric	16V	1.97 A	5 A	40 A	30 s	35 mOhms	85 mOhms	-	-40°C ~ 85°C	Automotive	AEC-Q200	-	Surface Mount	0.343" L x 0.250" W (8.70mm x 6.36mm)	-	0.118" (3.00mm)	-

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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.