Circuit Protection

RUEF250

Active

LITTELFUSE

PTC RESETTABLE FUSE 2.5A(HOLD) 5A(TRIP) 30V 100A 1.2W 10.3S 0.02OHM RADIAL 11.4 X 3 X 18.3MM BAG

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DocumentsProduct Change Notice EN Datasheet +2

Circuit Protection

RUEF250

Active

LITTELFUSE

PTC RESETTABLE FUSE 2.5A(HOLD) 5A(TRIP) 30V 100A 1.2W 10.3S 0.02OHM RADIAL 11.4 X 3 X 18.3MM BAG

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Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	RUEF250

Approval Agency	CSA, TUV, UL, CQC
Current - Hold (Ih) (Max)	2.5 A
Current - Max [Max]	100 A
Current - Trip (It)	5 A
Height - Seated (Max) [Max] [z]	18.3 mm
Height - Seated (Max) [Max] [z]	0.72 in
Lead Spacing	5.05 mm
Lead Spacing	0.199 "
Mounting Type	Through Hole
Package / Case	Disc, Radial
Resistance - Initial (Ri) (Min) [Min]	20 mOhms
Resistance - Post Trip (R1) (Max) [Max] [custom]	70 mOhms
Size / Dimension [x]	11.4 mm
Size / Dimension [x]	0.449 "
Size / Dimension [y]	3 mm
Size / Dimension [y]	0.118 in
Time to Trip	10.3 s
Type	Polymeric
Voltage - Max [Max]	30 V

RUEF Series

Part	Approval Agency	Package / Case	Current - Trip (It)	Time to Trip	Current - Hold (Ih) (Max)	Operating Temperature [Max]	Operating Temperature [Min]	Resistance - Post Trip (R1) (Max) [Max]	Height - Seated (Max) [Max]	Height - Seated (Max) [Max]	Resistance - Initial (Ri) (Min) [Min]	Voltage - Max [Max]	Mounting Type	Type	Size / Dimension [x]	Size / Dimension [y]	Size / Dimension [y]	Size / Dimension [x]	Lead Spacing	Lead Spacing	Current - Max [Max]	Resistance - Post Trip (R1) (Max) [Max] [custom]	Height - Seated (Max) [Max] [z]	Height - Seated (Max) [Max] [z]	Current - Hold (Ih) (Max) [Max]	Height - Seated (Max)	Height - Seated (Max) [Max]	Size / Dimension [z]	Size / Dimension [diameter]	Size / Dimension [diameter]	Size / Dimension [z]
LITTELFUSE RUEF160S	CQC CSA TUV UL	Disc Radial	3.2 A	8 s	1.6 A	85 °C	-40 C	110 mOhms	0.598 in	15.2 mm	30 mOhms	30 V	Through Hole	Polymeric	8.9 mm	3 mm	0.118 in	0.35 in	5.05 mm	0.199 "	100 A
LITTELFUSE RUEF250	CQC CSA TUV UL	Disc Radial	5 A	10.3 s	2.5 A						20 mOhms	30 V	Through Hole	Polymeric	11.4 mm	3 mm	0.118 in	0.449 "	5.05 mm	0.199 "	100 A	70 mOhms	18.3 mm	0.72 in
LITTELFUSE RUEF090-2		Disc Radial	1.8 A	5.9 s		85 °C	-40 C	220 mOhms	0.48 in		70 mOhms	30 V	Through Hole	Polymeric	7.4 mm	3 mm	0.118 in	0.291 in	5.08 mm	0.2 in	100 A				900 mA	12.2 mm
LITTELFUSE RUEF250U	CQC CSA TUV UL	Disc Radial	5 A	10.3 s	2.5 A	85 °C	-40 C				20 mOhms	30 V	Through Hole	Polymeric	11.4 mm	3 mm	0.118 in	0.449 "	5.05 mm	0.199 "	100 A	70 mOhms	18.3 mm	0.72 in
LITTELFUSE RUEF090-AP		Disc Radial	1.8 A	5.9 s		85 °C	-40 C	220 mOhms	0.48 in		70 mOhms	30 V	Through Hole	Polymeric	7.4 mm	3 mm	0.118 in	0.291 in	5.05 mm	0.199 "	100 A				900 mA	12.2 mm
LITTELFUSE RUEF700K		Disc Radial	14 A	17.5 s		85 °C	-40 C	30 mOhms	1.091 in		5 mOhms	30 V	Through Hole	Polymeric	19.1 mm	3 mm	0.118 in	0.752 in	10.15 mm	0.4 "	100 A				7 A	27.7 mm
LITTELFUSE RUEF300K-2	CQC CSA TUV UL	Disc Radial	6 A	10.8 s		85 °C	-40 C	80 mOhms		0.71 "	20 mOhms	30 V	Through Hole	Polymeric	11.4 mm	3 mm	0.118 in	0.449 "	5.05 mm	0.199 "	100 A				3 A		18.03 mm
LITTELFUSE RUEF400K-2		Disc Radial	8 A			85 °C	-40 C	50 mOhms			10 mOhms	30 V	Through Hole	Polymeric	14 mm	3 mm	0.118 in	0.551 in	5.05 mm	0.199 "	100 A		21.3 mm	0.839 in	4 A
LITTELFUSE RUEF110-2		Disc Radial	2.2 A	6.6 s		85 °C	-40 C	170 mOhms	0.559 "	14.2 mm	70 mOhms	30 V	Through Hole	Polymeric					5.05 mm	0.199 "	100 A				1.1 A			3 mm	7.4 mm	0.291 "	0.118 in
LITTELFUSE RUEF600K		Disc Radial	12 A	16 s		85 °C	-40 C	0.04 Ohms	1.032 in	26.2 mm	5 mOhms	30 V	Through Hole	Polymeric	16.5 mm	3 mm	0.118 in	0.65 in	10.15 mm	0.4 "	100 A				6 A

Pricing

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

Distributor	Package	Quantity	$	Updated

Arrow	N/A	1	$ 0.30	1m+
		10	$ 0.28
		25	$ 0.25
		100	$ 0.22
Digikey	Bag	1	$ 0.47	1m+
		5	$ 0.46
		10	$ 0.45
		50	$ 0.37
		100	$ 0.31
		250	$ 0.28
		500	$ 0.24
		1000	$ 0.21
		5000	$ 0.19
	N/A	14888	$ 0.53	1m+
Mouser	N/A	1	$ 0.43	1m+
		10	$ 0.38
		25	$ 0.29
		100	$ 0.27
		250	$ 0.26
		500	$ 0.24
		1000	$ 0.22
Newark	Each	1	$ 0.52	1m+
		10	$ 0.40
		25	$ 0.36
		50	$ 0.33
		100	$ 0.30
		500	$ 0.25
		1000	$ 0.23

Description

General part information

RUEF Series

The RUEF250 from TE Connectivity is a radial leaded PolySwitch resettable device. It provides engineers with more design flexibility. The higher voltage ratings allow this device to use in new applications and it is compatible with high volume electronics assembly.

Documents

Technical documentation and resources

RUEF250

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RUEF250

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Technical Specifications

RUEF Series

Pricing

Description

RUEF Series

Documents

Product Change Notice EN

Datasheet

PolySwitch, Radial-leaded Catalog

RUEF250 | Datasheet

RUEF Series