Circuit Protection

RS120-050

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OptiFuse

PTC RESET FUSE 120V 500MA RADIAL

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Circuit Protection

RS120-050

Active

OptiFuse

PTC RESET FUSE 120V 500MA RADIAL

Deep-Dive with AI

DocumentsDatasheet

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	RS120-050

Approval Agency	cUL, UL, TUV
Current - Hold (Ih) (Max) [Max]	500 mA
Current - Max [Max]	3 A
Current - Trip (It)	1 A
Height - Seated (Max) [Max]	14.9 mm
Height - Seated (Max) [Max]	0.587 in
Lead Spacing	0.201 in
Lead Spacing	5.1 mm
Mounting Type	Through Hole
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 C
Package / Case	Disc, Radial
Resistance - Post Trip (R1) (Max) [Max]	1.17 Ohms
Size / Dimension [diameter]	0.362 in
Size / Dimension [diameter]	9.2 mm
Size / Dimension [z]	0.15 in
Size / Dimension [z]	3.8 mm
Time to Trip	6 s
Type	Polymeric
Voltage - Max	135 V
Voltage - Max [Max]	120 V

RS120 Series

Part	Approval Agency	Type	Mounting Type	Current - Trip (It)	Current - Hold (Ih) (Max) [Max]	Voltage - Max [Max]	Voltage - Max	Current - Max [Max]	Time to Trip	Resistance - Post Trip (R1) (Max) [Max]	Lead Spacing	Lead Spacing	Resistance - Initial (Ri) (Min) [Min]	Size / Dimension [y]	Size / Dimension [y]	Size / Dimension [x]	Size / Dimension [x]	Height - Seated (Max) [Max]	Height - Seated (Max)	Package / Case	Operating Temperature [Max]	Operating Temperature [Min]	Size / Dimension [diameter]	Size / Dimension [z]	Size / Dimension [z]	Size / Dimension [diameter]	Height - Seated (Max) [Max] [z]	Height - Seated (Max) [Max] [z]	Height - Seated (Max) [Max]	Size / Dimension [custom]	Size / Dimension [custom]	Height - Seated (Max) [Max]	Current - Hold (Ih) (Max)	Size / Dimension
OptiFuse RS120-200	cUL TUV UL	Polymeric	Through Hole	4.2 A	2 A	120 V	135 V	20 A	36 s	210 mOhms	0.201 in	5.1 mm	80 mOhms	0.161 in	4.1 mm	23.5 mm	0.925 "	1.098 in	27.9 mm	Disc Radial	85 °C	-40 C
OptiFuse RS120-110	cUL TUV UL	Polymeric	Through Hole	2.2 A	1.1 A	120 V	135 V	8 A	8.2 s	380 mOhms	0.201 in	5.1 mm	150 mOhms							Disc Radial	85 °C	-40 C	13.3 mm	0.161 "	4.1 mm	0.524 "	18.3 mm	0.72 in
OptiFuse RS120-375	cUL TUV UL	Polymeric	Through Hole	7.5 A	3.75 A	120 V	135 V	20 A	24 s	80 mOhms			30 mOhms							Disc Radial	85 °C	-40 C	25.5 mm			1.004 in		1.339 in	34 mm	0.161 "	4.1 mm
OptiFuse RS120-050	cUL TUV UL	Polymeric	Through Hole	1 A	500 mA	120 V	135 V	3 A	6 s	1.17 Ohms	0.201 in	5.1 mm								Disc Radial	85 °C	-40 C	9.2 mm	0.15 in	3.8 mm	0.362 in			0.587 in			14.9 mm
OptiFuse RS120-185	cUL TUV UL	Polymeric	Through Hole	3.7 A		120 V	135 V	12 A			0.201 in	5.1 mm	80 mOhms					0.98 in		Disc Radial	85 °C	-40 C				0.783 in			24.9 mm	0.161 "			1.85 A	4.1 mm 19.9 mm

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Bulk	1	$ 0.79
		10	$ 0.74
		25	$ 0.70
		50	$ 0.65
		100	$ 0.59
		250	$ 0.55
		500	$ 0.50
		1000	$ 0.46
	N/A	149	$ 1.14

Description

General part information

RS120 Series

Polymeric PTC Resettable Fuse 120V (135V Int) 500 mA Ih Through Hole Radial, Disc

Documents

Technical documentation and resources