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
TRF600-250 PTC RESET FUSE 250V 250MA RADIAL Littelfuse Inc.	2,888	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, TRF600	Bulk	Active	Polymeric	250V (600V Int)	250 mA	850 mA	3 A	1 s	1 Ohms	7 Ohms	4.3 Ohms	-40°C ~ 85°C	-	-	-	Through Hole	0.591" L x 0.181" W (15.00mm x 4.60mm)	0.571" (14.50mm)	-	0.197" (5.00mm)
SMDCH125F/24-02 PTC RESET FUSE 24V 1.25A 2920 Littelfuse Inc.	9,413	-	RFQ	Datasheet	2920 (7351 Metric), Concave	SMDC	Tape & Reel (TR)	Active	Polymeric	24V	1.25 A	2.5 A	20 A	500 ms	-	-	-	-	-	-	-	Surface Mount	0.295" L x 0.201" W (7.50mm x 5.10mm)	-	0.055" (1.40mm)	-
TS600-400F-2 PTC RESET FUSE 60V 400MA 2SMD Littelfuse Inc.	7,765	-	RFQ	Datasheet	2-SMD	PolySwitch®, TS600	Tape & Reel (TR)	Active	Polymeric	60V (600V Int)	400 mA	1 A	60 A	14 s	500 mOhms	2 Ohms	-	-40°C ~ 85°C	-	-	-	Surface Mount	0.742" L x 0.305" W (18.85mm x 7.75mm)	-	0.484" (12.30mm)	-
RXEF065S PTC RESET FUSE 72V 650MA RADIAL Littelfuse Inc.	7,624	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RXEF	Bag	Active	Polymeric	72V	650 mA	1.3 A	40 A	5.3 s	310 mOhms	720 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.370" Dia x 0.118" T (9.40mm x 3.00mm)	0.571" (14.50mm)	-	0.199" (5.05mm)
RUSBF120 PTC RESET FUSE 6V 1.2A RADIAL Littelfuse Inc.	4,826	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RUSBF	Bag	Active	Polymeric	6V	1.2 A	2 A	40 A	500 ms	70 mOhms	140 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.272" Dia x 0.122" T (6.90mm x 3.10mm)	0.461" (11.70mm)	-	0.201" (5.10mm)
VLP175UAF PTC RESET FUSE 16V 1.75A STRAP Littelfuse Inc.	7,260	-	RFQ	Datasheet	Strap	PolySwitch®, VLP	Bulk	Active	Polymeric	16V	1.75 A	3.9 A	60 A	5 s	23 mOhms	82 mOhms	-	-	-	-	-	User Defined	-	0.028" (0.70mm)	-	-
RUSBF135 PTC RESET FUSE 16V 1.35A RADIAL Littelfuse Inc.	3,822	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RUSBF	Bag	Active	Polymeric	16V	1.35 A	2.7 A	40 A	4.5 s	40 mOhms	112 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)
RUSBF160 PTC RESET FUSE 16V 1.6A RADIAL Littelfuse Inc.	2,472	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RUSBF	Bag	Active	Polymeric	16V	1.6 A	3.2 A	40 A	9 s	30 mOhms	110 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.350" L x 0.118" W (8.90mm x 3.00mm)	0.598" (15.20mm)	-	0.199" (5.05mm)
RGEF400K PTC RESET FUSE 16V 4A RADIAL Littelfuse Inc.	3,329	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RGEF	Bag	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)
RUEF160S PTC RESET FUSE 30V 1.6A RADIAL Littelfuse Inc.	4,638	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RUEF	Bulk	Active	Polymeric	30V	1.6 A	3.2 A	100 A	8 s	30 mOhms	110 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.350" L x 0.118" W (8.90mm x 3.00mm)	0.598" (15.20mm)	-	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.

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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.