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LRD450

更新时间： 2024-10-19 03:52:23
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力特 - LITTELFUSE /
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Max. Device Surface Temperature in Tripped State

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LRD450 数据手册

 浏览型号LRD450的Datasheet PDF文件第2页 
®
POLYFUSE RESETTABLE FUSES  
Strap Type, 15 V / 20 V  
Specifications  
LRD  
Standard  
Packaging  
UL 1434 1st Edition  
A
small pack  
D
standard  
CSA C22.2 No. 0 CSA TIL No. CA-3A  
Materials  
Insulating material:Polyester Tape  
Terminals: Nickel  
Approvals  
cULus Recognition  
TÜV  
Max. Device Surface Temperature in Tripped State  
Features  
The LRD product series are designed to reduce  
the device’s resistance at the same hold cur-  
rent rating. The smaller thermal mass of these  
devices also provide benefit of faster trip time and  
125 °C  
Operating / Storage Temperature  
-40 ºC to +85 ºC (consider derating)  
increase the battery safety level. The LRD devices Humidity Ageing  
are ideally suited for battery packs used for  
portble computer and camcorder applications.  
+85 °C, 85 % R.H., 7 days, ± 5 % typical resistance change  
Vibration  
MIL-LRD-883C, Condition A, no change  
Marking  
Dimensions (mm)  
“P”, Part Code, identification, lot number  
S: one slot  
Dimensions (mm)  
Model  
A
B
C
D
E
packaging quantity  
Fig  
Min Max  
Min Max  
Min Max  
Min  
Min Max  
small pack  
standard  
LRD190  
LRD190S  
LRD260  
LRD260S  
LRD380  
LRD450  
LRD550  
LRD600  
LRD730  
1
2
1
2
1
1
1
1
1
19.9 22.1  
19.9 22.1  
20.9 23.1  
20.9 23.1  
24.0 26.0  
24.0 26.0  
35.0 37.0  
24.0 26.0  
27.1 29.1  
4.9  
4.9  
4.9  
4.9  
6.9  
9.9 10.5  
6.9 7.5  
5.5  
5.5  
5.5  
5.5  
7.5  
0.6  
0.6  
0.6  
0.6  
0.6  
0.6  
0.6  
0.6  
0.6  
1.0  
1.0  
1.0  
1.0  
1.0  
1.0  
1.0  
1.0  
1.0  
5.5  
5.5  
4.1  
4.1  
5.3  
5.3  
5.3  
4.1  
4.1  
3.9  
3.9  
3.9  
3.9  
4.9  
5.9  
4.9  
5.9  
5.9  
4.1  
4.1  
4.1  
4.1  
5.1  
6.1  
5.1  
6.1  
6.1  
500  
500  
500  
500  
500  
500  
500  
500  
500  
10,000  
10,000  
10,000  
10,000  
10,000  
10,000  
10,000  
10,000  
10,000  
13.9 14.5  
13.9 14.5  
Permissible continuous operating current is ≤ 100 % at ambient temperature of 20 ºC (68 ºF).  
Model  
Ihold  
(A)  
ITrip  
(A)  
Vmax. dc  
(V)  
Imax.  
(A)  
max. time to trip  
(s @ A)  
Pd max.  
(W)  
Resistance  
Rmin.( ) Rmax.( ) RI max.( )  
Approvals  
LRD190  
LRD190S  
LRD260  
LRD260S  
LRD380  
LRD450  
LRD550  
LRD600  
LRD730  
1.90  
1.90  
2.60  
2.60  
3.80  
4.50  
5.50  
6.00  
7.30  
3.90  
3.90  
15  
15  
15  
15  
15  
20  
20  
20  
20  
100  
100  
100  
100  
100  
100  
100  
100  
100  
5.0 @ 9.50  
5.0 @ 9.50  
5.0 @ 13.00  
5.0 @ 13.00  
5.0 @ 19.00  
5.0 @ 22.50  
5.0 @ 27.50  
5.0 @ 30.00  
5.0 @ 30.00  
1.20  
1.20  
2.50  
2.50  
2.50  
2.50  
2.80  
2.80  
3.30  
0.039  
0.039  
0.020  
0.020  
0.013  
0.011  
0.009  
0.007  
0.006  
0.072  
0.072  
0.042  
0.042  
0.026  
0.020  
0.016  
0.014  
0.012  
0.102  
0.102  
0.063  
0.063  
0.037  
0.028  
0.022  
0.019  
0.015  
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
5.80  
5.80  
8.30  
8.90  
10.50  
11.70  
14.10  
NOTE:  
Pd  
R min  
R 1max  
=
Power dissipated from device when in the tripped state at 20°C still air.  
Minimum resistance of device in initial (un-soldered) state.  
Ihold  
I trip  
=
Hold current: maximum current device will pass without tripping in 20°C still air.  
Trip current: minimum current at which the device will trip in 20°C still air.  
=
=
=
=
=
Maximum resistance of device at 20°C measured one hour after tripping for 20 sec.  
Vmax  
Imax  
Maximum voltage device can withstand without damage at rated current (Imax  
)
Caution: Operation beyond the specified rating may result in damage and possible arcing and flame.  
Specifications are subject to change without notice  
Maximum fault current device can withstand without damage at rated voltage (Vmax  
)
Order  
Qty.  
Order-  
Model  
Packaging  
Information  
Number  
In our continuing strategy to deliver unparalleled circuit protection solutions,  
technical expertise and application leadership, we proudly introduce the  
WICKMANN Group and its products to the Littelfuse portfolio.  
www.littelfuse.com  
040706  
12

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