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
B59850C0130A070 PTC RESET FUSE 265V 200MA RADIAL EPCOS - TDK Electronics	2,142	-	RFQ	Datasheet	Radial, Disc	-	Bulk	Active	Ceramic	265V	200 mA	320 mA	1.5 A	-	-	-	13 Ohms	0°C ~ 60°C	-	-	-	Through Hole	0.433" Dia x 0.197" T (11.00mm x 5.00mm)	0.571" (14.50mm)	-	0.197" (5.00mm)
B59773B0120A070 PTC RESET FUSE 550V RADIAL DISC EPCOS - TDK Electronics	371	-	RFQ	Datasheet	Radial, Disc	B59773	Bulk	Active	Ceramic	550V	-	48 mA	1 A	3 s	-	-	500 Ohms	0°C ~ 60°C	-	-	-	Through Hole	0.335" Dia x 0.276" T (8.50mm x 7.00mm)	0.197" (5.00mm)	-	0.197" (5.00mm)
B59860C0120A070 PTC RESET FUSE 265V 140MA RADIAL EPCOS - TDK Electronics	1,298	-	RFQ	Datasheet	Radial, Disc	-	Bulk	Active	Ceramic	265V	140 mA	280 mA	1.5 A	-	-	-	15 Ohms	0°C ~ 60°C	-	-	-	Through Hole	0.433" Dia x 0.197" T (11.00mm x 5.00mm)	0.571" (14.50mm)	-	0.197" (5.00mm)
B59950C0120A070 PTC RESET FUSE 80V 320MA RADIAL EPCOS - TDK Electronics	1,265	-	RFQ	Datasheet	Radial, Disc	B59950	Bulk	Active	Ceramic	80V	320 mA	640 mA	5.5 A	-	-	-	3.7 Ohms	-40°C ~ 125°C	-	-	-	Through Hole	0.532" Dia x 0.138" T (13.50mm x 3.50mm)	0.669" (17.00mm)	-	0.197" (5.00mm)
B59301P1120A062 PTC RESET FUSE 24V 310MA 4032 EPCOS - TDK Electronics	1,915	-	RFQ	Datasheet	4032 (1080 Metric)	B59301	Tape & Reel (TR)	Active	Ceramic	24V	310 mA	640 mA	1.6 A	-	1.85 Ohms	-	3.1 Ohms	-40°C ~ 60°C	Automotive	AEC-Q200	-	Surface Mount	0.394" L x 0.315" W (10.00mm x 8.00mm)	-	0.150" (3.80mm)	-
B59860C0120A051 PTC RESET FUSE 265V 140MA RADIAL EPCOS - TDK Electronics	3,988	-	RFQ	Datasheet	Radial, Disc	-	Tape & Reel (TR)	Active	Ceramic	265V	140 mA	280 mA	1.5 A	-	-	-	15 Ohms	0°C ~ 60°C	-	-	-	Through Hole	0.433" Dia x 0.197" T (11.00mm x 5.00mm)	0.571" (14.50mm)	-	0.197" (5.00mm)
B59840C0120A070 PTC RESET FUSE 265V 330MA RADIAL EPCOS - TDK Electronics	415	-	RFQ	Datasheet	Radial, Disc	-	Bulk	Active	Ceramic	265V	330 mA	660 mA	4.1 A	-	-	-	6 Ohms	0°C ~ 60°C	-	-	-	Through Hole	0.689" Dia x 0.197" T (17.50mm x 5.00mm)	0.827" (21.00mm)	-	0.197" (5.00mm)
B59115P1080A062 PTC RESET FUSE 80V 40MA 3225 EPCOS - TDK Electronics	20,959	-	RFQ	Datasheet	3225 (8063 Metric)	B59115	Tape & Reel (TR)	Active	Ceramic	80V	40 mA	85 mA	700 mA	-	-	-	55 Ohms	-40°C ~ 60°C	Automotive	AEC-Q200	-	Surface Mount	0.315" L x 0.248" W (8.00mm x 6.30mm)	-	0.150" (3.80mm)	-
B59215P1080A062 PTC RESET FUSE 80V 65MA 3225 EPCOS - TDK Electronics	20,079	-	RFQ	Datasheet	3225 (8063 Metric)	B59215	Tape & Reel (TR)	Active	Ceramic	80V	65 mA	135 mA	1 A	-	-	-	25 Ohms	-40°C ~ 60°C	Automotive	AEC-Q200	-	Surface Mount	0.315" L x 0.248" W (8.00mm x 6.30mm)	-	0.150" (3.80mm)	-
B59101P1120A062 PTC RESET FUSE 24V 355MA 2SMD EPCOS - TDK Electronics	6,743	-	RFQ	Datasheet	2-SMD	B59101	Tape & Reel (TR)	Active	Ceramic	24V	355 mA	-	170 mA	-	7.8 Ohms	13 Ohms	-	-40°C ~ 60°C	Automotive	AEC-Q200	-	Surface Mount	0.398" L x 0.138" W (10.10mm x 3.50mm)	-	0.150" (3.80mm)	-

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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.