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
PICOASMDC110S-2 PPTC-MINI-PSW Littelfuse Inc.	2,580	-	RFQ	Datasheet	0805 (2012 Metric), Concave	PolySwitch® picoASMDC	Tape & Reel (TR)	Active	Polymeric	6V	1.1 A	2.2 A	40 A	200 ms	50 mOhms	170 mOhms	-	-40°C ~ 85°C	Automotive	AEC-Q200	-	Surface Mount	0.083" L x 0.055" W (2.10mm x 1.40mm)	-	0.047" (1.20mm)	-
TRF250-120-B-0.5 PTC RESET FUSE 60V 120MA RADIAL Littelfuse Inc.	1,387	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, TRF250	Bag	Active	Polymeric	60V (250V Int)	120 mA	240 mA	3 A	2.5 s	4 Ohms	16 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)
MICROSMDCH050F-02 PTC RESET FUSE 13.2V 500MA 1210 Littelfuse Inc.	2,954	-	RFQ	Datasheet	1210 (3225 Metric), Concave	PolySwitch®, microSMD	Tape & Reel (TR)	Active	Polymeric	13.2V	500 mA	1.5 A	10 A	50 ms	190 mOhms	900 mOhms	-	-40°C ~ 125°C	-	-	-	Surface Mount	0.127" L x 0.102" W (3.22mm x 2.58mm)	-	0.025" (0.64mm)	-
VLR230F PTC RESET FUSE 12V 2.3A STRAP Littelfuse Inc.	1,887	-	RFQ	Datasheet	Strap	PolySwitch®, VLR	Bulk	Active	Polymeric	12V	2.3 A	5 A	100 A	5 s	12 mOhms	36 mOhms	-	-	-	-	-	User Defined	0.866" L x 0.201" W (22.00mm x 5.10mm)	-	0.032" (0.80mm)	-
TRF250-145US PTC RESET FUSE 60V 145MA RADIAL Littelfuse Inc.	1,603	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, TRF250	Bag	Active	Polymeric	60V (250V Int)	145 mA	290 mA	3 A	4 s	3.5 Ohms	14 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)
TRF250-120T-RC-B-0.5 PTC RESET FUSE 60V 120MA RADIAL Littelfuse Inc.	1,500	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, TRF250	Bag	Active	Polymeric	60V (250V Int)	120 mA	260 mA	3 A	3 s	5.4 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)
VTP170F PTC RESET FUSE 16V 1.7A STRAP Littelfuse Inc.	9,758	-	RFQ	Datasheet	Strap	PolySwitch®, VTP	Bulk	Active	Polymeric	16V	1.7 A	3.4 A	100 A	5 s	30 mOhms	105 mOhms	-	-40°C ~ 85°C	-	-	-	User Defined	0.648" L x 0.283" W (16.45mm x 7.20mm)	-	0.032" (0.80mm)	-
TRF250-145-RA-B-0.5 PTC RESET FUSE 60V 145MA RADIAL Littelfuse Inc.	9,499	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, TRF250	Bag	Active	Polymeric	60V (250V Int)	145 mA	290 mA	3 A	2.5 s	3 Ohms	12 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)
RGEF900-2 PTC RESET FUSE 16V 9A RADIAL Littelfuse Inc.	1,996	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RGEF	Tape & Reel (TR)	Active	Polymeric	16V	9 A	15.3 A	100 A	5.5 s	4.7 mOhms	13.5 mOhms	-	-40°C ~ 85°C	-	-	-	Through Hole	0.532" L x 0.100" W (13.50mm x 2.50mm)	0.854" (21.70mm)	-	0.199" (5.05mm)
RHEF650-2 PTC RESET FUSE 16V 6.5A RADIAL Littelfuse Inc.	1,480	-	RFQ	Datasheet	Radial, Disc	PolySwitch®, RHEF	Tape & Reel (TR)	Active	Polymeric	16V	6.5 A	12 A	100 A	5.5 s	11 mOhms	26 mOhms	-	-40°C ~ 125°C	-	-	-	Through Hole	0.500" L x 0.118" W (12.70mm x 3.00mm)	0.874" (22.20mm)	-	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.

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Yes. Always review the manufacturer datasheet to confirm ratings, package, operating conditions and other technical details before finalizing a component for your design.

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