15LR190 Datasheet, PDF (1/4 Pages) Littelfuse – POLYFUSE® Resettable PTCs

LR Series
Agency Approvals
AGENCY AGENCY FILE NUMBER
E183209
R50082521
POLYFUSE^® Resettable PTCs
Axial Leaded Strap
Description
The new LR series device provides reliable, noncycling
protection against overcharging and short circuits events
for rechargeable battery cells where resettable protection
is desired.
Features
• RoHS compliant and
lead-free
• Weldable nickel terminals
• Slim, low profile design
• Compact design saves
board space
• Low resistance
Applications
• R echargeable battery cell
protection
Electrical Characteristics
Part Number
I _hold
(A)
Maximum Time
I _trip
V _max
I _max
P_d
max.
To Trip
(A) (Vdc) (A)
(W) ^{Current Time}
Resistance
R _min
R _typ
R _1max
(A)
(Sec.)
(Ω)
(Ω)
(Ω)
15LR190
1.9
3.9
15
100
1.2
9.50
5.00
0.039 0.072 0.102
15LR190S
1.9
3.9
15
100
1.2
9.50
5.00
0.039 0.072 0.102
15LR260
2.6
5.8
15
100
2.5
13.00
5.00
0.020 0.042 0.063
15LR260S
2.6
5.8
15
100
2.5
13.00
5.00
0.020 0.042 0.063
15LR380
3.8
8.3
15
100
2.5
19.00
5.00
0.013 0.026 0.037
20LR450
4.5
8.9
20
100
2.5
22.50
5.00
0.011 0.020 0.028
20LR550
5.5
10.5
20
100
2.8
27.50
5.00
0.009 0.016 0.022
20LR600
6.0
11.7
20
100
2.8
30.00
5.00
0.007 0.014 0.019
20LR730
7.3
14.1
20
100
3.3
30.00
5.00
0.006 0.012 0.015
Agency
Approvals
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
I = Hold current: maximum current device will pass without tripping in 20°C still air.
hold
I = Trip current: minimum current at which the device will trip in 20°C still air.
trip
V _max = Maximum voltage device can withstand without damage at rated current (I max)
I _max = Maximum fault current device can withstand without damage at rated voltage (V_max)
P _d = Power dissipated from device when in the tripped state at 20°C still air.
R _min = Minimum resistance of device in initial (un-soldered) state.
R = Typical resistance of device in initial (un-soldered) state.
typ
R = Maximum resistance of device at 20°C measured one hour after tripping or reflow
1max
soldering of 260°C for 20 sec.
Caution: Operation beyond the specified rating may result in damage and possible arcing
and flame.
LR Series
Specifications are subject to change without notice.

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