PTC Resettable Fuses

Browse available PTC Resettable Fuses part numbers with manufacturer references, stock information, pricing, datasheets and key specifications. Use the table below to compare options for your project.

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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
TS120A-3851 DUAL SINGLE SHOT TIMER Littelfuse Inc.	2,769	-	RFQ	Datasheet	-	-	Box	Active	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
RXE300 PTC RESET FUSE 72V 3A RADIAL Littelfuse Inc.	9,500	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RXE	Bulk	Obsolete	Polymeric	72V	3 A	6 A	40 A	19.8 s	40 mOhms	100 mOhms	-	-	-	-	-	Through Hole	0.941" Dia x 0.118" T (23.90mm x 3.00mm)	1.126" (28.60mm)	-	0.400" (10.15mm)
RXE050 PTC RESET FUSE 72V 500MA RADIAL Littelfuse Inc.	5,195	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RXE	Bulk	Obsolete	Polymeric	72V	500 mA	1 A	40 A	4 s	500 mOhms	1.17 Ohms	-	-	-	-	-	Through Hole	0.311" Dia x 0.118" T (7.90mm x 3.00mm)	0.539" (13.70mm)	-	0.199" (5.05mm)
RXE090 PTC RESET FUSE 72V 900MA RADIAL Littelfuse Inc.	3,475	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RXE	Bulk	Obsolete	Polymeric	72V	900 mA	1.8 A	40 A	7.2 s	200 mOhms	470 mOhms	-	-	-	-	-	Through Hole	0.441" Dia x 0.118" T (11.20mm x 3.00mm)	0.622" (15.80mm)	-	0.199" (5.05mm)
RXE065 PTC RESET FUSE 60V 650MA RADIAL Littelfuse Inc.	7,790	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RXE	Bulk	Obsolete	Polymeric	60V	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)
TR250-120 PTC RESET FUSE 250V 120MA RADIAL Littelfuse Inc.	2,527	-	RFQ	Datasheet	Radial, Disc	PolySwitch®	Bulk	Obsolete	Polymeric	250V (60V Int)	120 mA	-	3 A	1.5 s	4 Ohms	16 Ohms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.256" L x 0.181" W (6.50mm x 4.60mm)	0.433" (11.00mm)	-	0.197" (5.00mm)
TR250-180U PTC RESET FUSE 180MA RADIAL Littelfuse Inc.	3,265	-	RFQ	Datasheet	Radial, Disc	PolySwitch®	Bulk	Obsolete	-	-	180 mA	-	-	-	-	-	-	-	-	-	-	Through Hole	0.409" L x 0.142" W (10.40mm x 3.60mm)	0.496" (12.60mm)	-	0.197" (5.00mm)
RUE800 PTC RESET FUSE 30V 8A RADIAL Littelfuse Inc.	6,742	-	RFQ	Datasheet	Radial, Disc	PolySwitch®	Bulk	Obsolete	Polymeric	30V	8 A	16 A	40 A	18.8 s	5 mOhms	20 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.850" L x 0.118" W (21.60mm x 3.00mm)	1.150" (29.20mm)	-	0.402" (10.20mm)
RXE135 PTC RESET FUSE 60V 1.35A RADIAL Littelfuse Inc.	5,919	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RXE	Bulk	Obsolete	Polymeric	60V	1.35 A	2.7 A	40 A	9.6 s	120 mOhms	300 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.571" Dia x 0.118" T (14.50mm x 3.00mm)	0.752" (19.10mm)	-	0.199" (5.05mm)
TR250-145U PTC RESET FUSE 250V 145MA RADIAL Littelfuse Inc.	7,367	-	RFQ	Datasheet	Radial, Disc	PolySwitch®	Bulk	Obsolete	Polymeric	250V (60V Int)	145 mA	-	3 A	2 s	3.5 Ohms	12 Ohms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.236" L x 0.150" W (6.00mm x 3.80mm)	0.394" (10.00mm)	-	0.197" (5.00mm)
TR250-120U PTC RESET FUSE 250V 120MA RADIAL Littelfuse Inc.	9,079	-	RFQ	Datasheet	Radial, Disc	PolySwitch®	Bulk	Obsolete	Polymeric	250V (60V Int)	120 mA	-	3 A	1 s	6 Ohms	16 Ohms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.256" L x 0.181" W (6.50mm x 4.60mm)	0.433" (11.00mm)	-	0.197" (5.00mm)
TR250-145 PTC RESET FUSE 250V 145MA RADIAL Littelfuse Inc.	5,297	-	RFQ	Datasheet	Radial, Disc	PolySwitch®	Bulk	Obsolete	Polymeric	250V (60V Int)	145 mA	-	3 A	2.5 s	3 Ohms	14 Ohms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.256" L x 0.181" W (6.50mm x 4.60mm)	0.433" (11.00mm)	-	0.197" (5.00mm)
RXE075 PTC RESET FUSE 60V 750MA RADIAL Littelfuse Inc.	5,246	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RXE	Bulk	Obsolete	Polymeric	60V	750 mA	1.5 A	40 A	6.3 s	250 mOhms	600 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.402" Dia x 0.118" T (10.20mm x 3.00mm)	0.598" (15.20mm)	-	0.199" (5.05mm)
RUE185 PTC RESET FUSE 30V 1.85A RADIAL Littelfuse Inc.	8,338	-	RFQ	Datasheet	Radial, Disc	PolySwitch®	Bulk	Obsolete	Polymeric	30V	1.85 A	3.7 A	40 A	8.7 s	30 mOhms	90 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.402" L x 0.118" W (10.20mm x 3.00mm)	0.618" (15.70mm)	-	0.201" (5.10mm)
RUE160 PTC RESET FUSE 30V 1.6A RADIAL Littelfuse Inc.	7,956	-	RFQ	Datasheet	Radial, Disc	PolySwitch®	Bulk	Obsolete	Polymeric	30V	1.6 A	3.2 A	40 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)	-	0.201" (5.10mm)
RUE400 PTC RESET FUSE 30V 4A RADIAL Littelfuse Inc.	4,765	-	RFQ	Datasheet	Radial, Disc	PolySwitch®	Bulk	Obsolete	Polymeric	30V	4 A	8 A	40 A	12.7 s	10 mOhms	50 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.551" L x 0.120" W (14.00mm x 3.00mm)	0.831" (21.10mm)	-	0.201" (5.10mm)
RXE030 PTC RESET FUSE 72V 300MA RADIAL Littelfuse Inc.	5,958	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RXE	Bulk	Obsolete	Polymeric	72V	300 mA	600 mA	40 A	3 s	880 mOhms	2.1 Ohms	-	-	-	-	-	Through Hole	0.291" Dia x 0.118" T (7.40mm x 3.00mm)	0.500" (12.70mm)	-	0.199" (5.05mm)
RXE020 PTC RESET FUSE 72V 200MA RADIAL Littelfuse Inc.	5,494	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RXE	Bulk	Obsolete	Polymeric	72V	200 mA	400 mA	40 A	2.2 s	1.83 Ohms	4.4 Ohms	-	-	-	-	-	Through Hole	0.291" Dia x 0.118" T (7.40mm x 3.00mm)	0.461" (11.70mm)	-	0.199" (5.05mm)
RXE025 PTC RESET FUSE 72V 250MA RADIAL Littelfuse Inc.	7,598	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RXE	Bulk	Obsolete	Polymeric	72V	250 mA	500 mA	40 A	2.5 s	1.25 Ohms	3 Ohms	-	-	-	-	-	Through Hole	0.291" Dia x 0.118" T (7.40mm x 3.00mm)	0.500" (12.70mm)	-	0.199" (5.05mm)
RXE040 PTC RESET FUSE 72V 400MA RADIAL Littelfuse Inc.	3,509	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RXE	Bulk	Obsolete	Polymeric	72V	400 mA	800 mA	40 A	3.8 s	550 mOhms	1.29 Ohms	-	-	-	-	-	Through Hole	0.299" Dia x 0.118" T (7.60mm x 3.00mm)	0.532" (13.50mm)	-	0.199" (5.05mm)

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