PTC Resettable Fuses

Use the filters and product table below to compare PTC Resettable Fuses components by manufacturer, availability, pricing reference and technical specifications. Review datasheets and key parameters to narrow the selection for your application.

If you already have a target part number, package, rating or quantity, send the requirement to Winsun (HK) Electronics for availability checks, BOM sourcing, shortage support and quotation assistance.

Parametric Selection Filter options by technical parameters

Stock & Datasheets Review availability and technical references

RFQ & BOM Support Send your target MPN, quantity or BOM

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
1206L110SLYR PTC RESET FUSE 6V 1.1A 1206 Littelfuse Inc.	7,394	-	RFQ	Datasheet	1206 (3216 Metric), Concave	POLY-FUSE®, LoRho	Tape & Reel (TR)	Active	Polymeric	6V	1.1 A	2.2 A	50 A	300 ms	15 mOhms	100 mOhms	-	-40°C ~ 85°C	-	-	-	Surface Mount	0.126" L x 0.065" W (3.20mm x 1.65mm)	-	0.030" (0.75mm)	-
RUEF900-2 PTC RESET FUSE 30V 9A RADIAL Littelfuse Inc.	7,369	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RUEF	Tape & Reel (TR)	Active	Polymeric	30V	9 A	18 A	100 A	20 s	5 mOhms	20 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.949" L x 0.118" W (24.10mm x 3.00mm)	1.142" (29.00mm)	-	0.400" (10.15mm)
RKEF500-2 PTC RESET FUSE 60V 5A RADIAL Littelfuse Inc.	116	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RKEF	Tape & Reel (TR)	Active	Polymeric	60V	5 A	10 A	40 A	28 s	12 mOhms	50 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	1.140" L x 0.120" W (29.00mm x 3.00mm)	1.142" (29.00mm)	-	0.400" (10.15mm)
1210L005/90WR 1210L Littelfuse Inc.	3,573	-	RFQ	Datasheet	1210 (3225 Metric), Concave	PolySwitch® 1210L	Tape & Reel (TR)	Active	Polymeric	90V	50 mA	150 mA	10 A	200 ms	3.6 Ohms	50 Ohms	-	-40°C ~ 85°C	-	-	-	Surface Mount	0.127" L x 0.101" W (3.22mm x 2.58mm)	-	0.049" (1.25mm)	-
30R500UMR PTC RESET FUSE 30V 5A RADIAL Littelfuse Inc.	3,097	-	RFQ	Datasheet	Radial, Disc	POLY-FUSE®, 30R	Cut Tape (CT)	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)
RKEF500K-2 PTC RESET FUSE 60V 5A RADIAL Littelfuse Inc.	6,522	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RKEF	Tape & Reel (TR)	Active	Polymeric	60V	5 A	10 A	40 A	28 s	12 mOhms	50 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	1.140" L x 0.120" W (29.00mm x 3.00mm)	1.142" (29.00mm)	-	0.400" (10.15mm)
0805L400SLWR PTC RESET FUSE 4.0A 6V 0805 Littelfuse Inc.	40,340	-	RFQ	Datasheet	0805 (2012 Metric), Concave	POLY-FUSE®, LoRho	Tape & Reel (TR)	Active	Polymeric	6V	4 A	9 A	50 A	2 s	3 mOhms	18 mOhms	-	-40°C ~ 85°C	-	-	-	Surface Mount	0.083" L x 0.053" W (2.10mm x 1.35mm)	-	0.055" (1.40mm)	-
RHEF1500 PTC RESET FUSE 16V 15A RADIAL Littelfuse Inc.	609	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RHEF	Bag	Active	Polymeric	16V	15 A	28 A	100 A	20 s	3.2 mOhms	9.2 mOhms	-	-40°C ~ 125°C	-	-	-	Through Hole	0.925" L x 0.142" W (23.50mm x 3.60mm)	1.130" (28.70mm)	-	0.400" (10.15mm)
30R600UMR PTC RESET FUSE 30V 6A RADIAL Littelfuse Inc.	3,214	-	RFQ	Datasheet	Radial, Disc	POLY-FUSE®, 30R	Cut Tape (CT)	Active	Polymeric	30V	6 A	12 A	40 A	16 s	5 mOhms	40 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.650" L x 0.118" W (16.50mm x 3.00mm)	1.055" (26.80mm)	-	0.402" (10.20mm)
LR4-900F PTC RESET FUSE 20V 9A STRAP Littelfuse Inc.	23,986	-	RFQ	Datasheet	Strap	PolySwitch®, LR4	Bag	Active	Polymeric	20V	9 A	16.7 A	100 A	5 s	6 mOhms	14 mOhms	-	-40°C ~ 85°C	-	-	-	User Defined	1.831" L x 0.323" W (46.50mm x 8.20mm)	-	0.039" (1.00mm)	-

WINSUN SOURCING SUPPORT

Need Help Sourcing PTC Resettable Fuses?

Send the target part number, manufacturer, specifications and quantity. Winsun (HK) Electronics can assist with availability checks, quotation support, shortage sourcing and alternative-part options when appropriate.

Availability and lead-time support BOM, shortage and alternative sourcing

Send part number & quantity Request a Quote

Need sourcing assistance? Contact Sales

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.