Littelfuse LRD730 Max. device surface temperature in tripped state Datasheet

POLYFUSE® RESETTABLE FUSES
LRD
Strap Type, 15 V / 20 V
Specifications
Standard
Packaging
A
small pack
D
standard
Approvals
Materials
Insulating material: Polyester Tape
Terminals:
Nickel
Features
Max. Device Surface Temperature in Tripped State
UL 1434 1st Edition
CSA C22.2 No. 0 CSA TIL No. CA-3A
cULus Recognition
TÜV
The LRD product series are designed to reduce
the device’s resistance at the same hold current rating. The smaller thermal mass of these
devices also provide benefit of faster trip time and
increase the battery safety level. The LRD devices
are ideally suited for battery packs used for
portble computer and camcorder applications.
Dimensions (mm)
125 °C
Operating / Storage Temperature
-40 ºC to +85 ºC (consider derating)
Humidity Ageing
+85 °C, 85 % R.H., 7 days, ± 5 % typical resistance change
Vibration
MIL-LRD-883C, Condition A, no change
Marking
“P”, Part Code, identification, lot number
S: one slot
1
2
1
2
1
1
1
1
1
19.9
19.9
20.9
20.9
24.0
24.0
35.0
24.0
27.1
22.1
22.1
23.1
23.1
26.0
26.0
37.0
26.0
29.1
B
Min Max
4.9
4.9
4.9
4.9
6.9
9.9
6.9
13.9
13.9
C
Min Max
5.5
5.5
5.5
5.5
7.5
10.5
7.5
14.5
14.5
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
D
Min
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
Permissible continuous operating current is ≤ 100 % at ambient temperature of 20 ºC (68 ºF).
Model
Ihold
ITrip
Vmax. dc
Imax.
max. time to trip
(A)
(A)
(V)
(A)
(s @ A)
LRD190
LRD190S
LRD260
LRD260S
LRD380
LRD450
LRD550
LRD600
LRD730
NOTE:
I hold =
I trip =
Vmax =
I max =
3.90
3.90
5.80
5.80
8.30
8.90
10.50
11.70
14.10
15
15
15
15
15
20
20
20
20
100
100
100
100
100
100
100
100
100
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 voltage device can withstand without damage at rated current (I max)
Maximum fault current device can withstand without damage at rated voltage (Vmax)
Order
Information
040706
1.90
1.90
2.60
2.60
3.80
4.50
5.50
6.00
7.30
Qty.
OrderNumber
Model
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
E
Min Max
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
Pd max.
(W)
1.20
1.20
2.50
2.50
2.50
2.50
2.80
2.80
3.30
packaging quantity
small pack
standard
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
Resistance
Approvals
R min.( ) R max.( ) RI max.( )
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
TÜV
LRD190
LRD190S
LRD260
LRD260S
LRD380
LRD450
LRD550
LRD600
LRD730
A
Min Max
cURus
Dimensions (mm)
Model
Fig
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Pd =
Power dissipated from device when in the tripped state at 20°C still air.
Minimum resistance of device in initial (un-soldered) state.
R min=
R 1max= Maximum resistance of device at 20°C measured one hour after tripping for 20 sec.
Caution: Operation beyond the specified rating may result in damage and possible arcing and flame.
Specifications are subject to change without notice
Packaging
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
POLYFUSE® RESETTABLE FUSES
LRD
AB
100.00
A: LRD380
B: LRD450
C: LRD730
C
Time-to-Trip (s)
10.00
1.00
0.10
0.01
1.00
10.00
100.00
Fault Current (A)
Thermal Derating Chart
Model
LRD190
LRD190S
LRD260
LRD260S
LRD380
LRD450
LRD550
LRD600
LRD730
040706
Ambient Operation Temperature - Ihold (A)
-40 °C
-20 °C
0 °C
23 °C
40 °C
50 °C
60 °C
70 °C
85 °C
2.80
2.80
3.80
3.80
5.50
6.50
8.00
8.70
10.60
2.50
2.50
3.40
3.40
4.90
5.80
7.10
7.80
9.50
2.30
2.30
3.10
3.10
4.40
5.30
6.20
7.10
8.60
1.90
1.90
2.60
2.60
3.80
4.50
5.50
6.00
7.30
1.60
1.60
2.20
2.20
3.30
3.90
4.70
5.20
6.30
1.50
1.50
2.00
2.00
3.00
3.60
4.30
4.70
5.70
1.40
1.40
1.90
1.90
2.80
3.30
4.00
4.40
5.40
1.20
1.20
1.70
1.70
2.50
2.90
3.60
3.90
4.70
1.00
1.00
1.40
1.40
2.10
2.50
3.00
3.30
4.00
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
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