Specification	LR4-450F

Current - Hold (Ih) (Max)	4.5 A
Current - Max [Max]	100 A
Current - Trip (It)	8.9 A
Mounting Type	User Defined
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 C
Package / Case	Strap
Resistance - Initial (Ri) (Min) [Min]	11 mOhms
Resistance - Post Trip (R1) (Max) [Max]	28 mOhms
Size / Dimension [x]	0.984 "
Size / Dimension [x]	25 mm
Size / Dimension [y]	0.413 in
Size / Dimension [y]	10.5 mm
Thickness (Max) [Max]	1 mm
Thickness (Max) [Max]	0.039 in
Time to Trip	5 s
Type	Polymeric
Voltage - Max [Max]	20 V

LR4 Series

Part	Approval Agency	Type	Time to Trip	Voltage - Max [Max]	Mounting Type	Operating Temperature [Max]	Operating Temperature [Min]	Package / Case	Size / Dimension [y]	Size / Dimension [y]	Size / Dimension [x]	Size / Dimension [x]	Resistance - Post Trip (R1) (Max) [Max]	Current - Hold (Ih) (Max) [Max]	Resistance - Initial (Ri) (Min) [Min]	Current - Trip (It)	Current - Max [Max]	Size / Dimension [x]	Size / Dimension [y]	Current - Hold (Ih) (Max)	Thickness (Max) [Max]	Thickness (Max) [Max]
LITTELFUSE LR4-1300SSF	CSA TUV UL	Polymeric	10 s	20 V	User Defined	85 °C	-40 C	Strap	0.382 in	9.7 mm	64 mm	2.52 "	9 mOhms	13 A	3.5 mOhms	21.2 A	100 A
LITTELFUSE LR4-450F		Polymeric	5 s	20 V	User Defined	85 °C	-40 C	Strap		10.5 mm	25 mm		28 mOhms		11 mOhms	8.9 A	100 A	0.984 "	0.413 in	4.5 A	1 mm	0.039 in
LITTELFUSE LR4-250UF		Polymeric		15 V	User Defined			Strap									100 A			2.5 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	$ 0.66	1m+
		10	$ 0.61
		25	$ 0.54
		100	$ 0.49
		250	$ 0.47
		500	$ 0.42
Digikey	N/A	614	$ 1.11	1m+
Mouser	N/A	1	$ 1.11	1m+
		5	$ 0.92
		10	$ 0.82
		50	$ 0.71
		100	$ 0.64
		250	$ 0.58
		500	$ 0.54
		1000	$ 0.50
		3000	$ 0.44
Newark	Each	1	$ 0.40	1m+
		250	$ 0.30
		500	$ 0.27
TME	N/A	1000	$ 0.63	<1d

General part information

PTC RESETTABLE FUSE 4.5A(HOLD) 8.9A(TRIP) 20V 100A 2.3W 5S 0.11OHM SMD SOLDER PAD 10 X 12MM BAG AUTOMOTIVE AEC-Q200

Technical documentation and resources