Polyfuse, Resettable ptcs, Axial lead battery strap type > lr series – Littelfuse LR Series User Manual
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Revised: June 4, 2010
POLYFUSE
®
Resettable PTCs
© 2010 Littelfuse, Inc.
LR Series
Axial Lead Battery Strap Type > LR Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/LR.html for current information.
Ambient Operation Temperature
-40°C
-20°C
0°C
23°C
40°C
50°C
60°C
70°C
85°C
Part Number
Hold Current (A)
15LR190
2.80
2.50
2.30
1.90
1.60
1.50
1.40
1.20
1.00
15LR190S
2.80
2.50
2.30
1.90
1.60
1.50
1.40
1.20
1.00
15LR260
3.80
3.40
3.10
2.60
2.20
2.00
1.90
1.70
1.40
15LR260S
3.80
3.40
3.10
2.60
2.20
2.00
1.90
1.70
1.40
15LR380
5.50
4.90
4.40
3.80
3.30
3.00
2.80
2.50
2.10
20LR450
6.50
5.80
5.30
4.50
3.90
3.60
3.30
2.90
2.50
20LR550
8.00
7.10
6.20
5.50
4.70
4.30
4.00
3.60
3.00
20LR600
8.70
7.80
7.10
6.00
5.20
4.70
4.40
3.90
3.30
20LR730
10.60
9.50
8.60
7.30
6.30
5.70
5.40
4.70
4.00
Temperature Rerating
Temperature Rerating Curve
B
A
A
B
-40 -30 -20
-10
0
10
20
30
40
50
60
70
80
10%
30%
50%
70%
90%
110%
130%
150%
170%
Temperature (°C)
Percentage of Rated Current
15LR190
15LR190
S
15LR260
A
B
Line/Part Number:
15LR380
15LR550
15LR600
20LR730
• 15LR260
• 15LR260
S
• 15LR450
Average Time Current Curves
The average time current curves and Temperature Rerating curve performance is affected
by a number or variables, and these curves provided as guidance only. Customer must
verify the performance in their application.
0.01
0.1
1
10
1
10
100
1000
1.90 A
2.60 A
3.80 A
4.50 A
5.50 A
6.00 A
7.30 A
Time in Seconds
Current in Amperes
LR