The new ST 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
Agency Approvals
AGENCY
AGENCY FILE NUMBER
E183209
R50119583
• Low resistance
• Provides overcurrent
protection at 125°C trip
temperature
Applications
• Rechargeable battery cell
protection
Electrical Characteristics
Maximum Time
To Trip
Current
(A)
6.00
6.00
8.75
8.75
10.00
20.00
20.00
Time
(Sec.)
5.00
5.00
5.00
5.00
4.00
3.00
6.00
R
min
(Ω)
0.085
0.085
0.050
0.050
0.030
0.017
0.012
Resistance
R
typ
(Ω)
0.160
0.160
0.090
0.090
0.060
0.031
0.024
R
1max
(Ω)
0.220
0.220
0.120
0.120
0.100
0.050
0.040
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Part Number
I
hold
(A)
1.2
1.2
1.75
1.75
2.00
3.50
4.20
I
trip
(A)
2.7
2.7
3.8
3.8
4.4
6.3
7
.6
V
max
(Vdc)
15
15
15
15
30
30
30
I
max
(A)
100
100
100
100
100
100
100
P
d
max.
(W)
1.2
1.2
2.5
2.5
1.9
2.5
2.9
Agency
Approvals
15ST120
15ST120S
15ST175
15ST175S
30ST200
30ST350
30ST420
Items with S at end of part number identify items with slit lead option. See Dimension Drawing and Part Ordering Number System sections of this document for more information.
I
hold
= Hold current: maximum current device will pass without tripping in 20°C still air.
I
trip
= Trip current: minimum current at which the device will trip in 20°C still air.
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
typ
= Typical resistance of device in initial (un-soldered) state.
R
1max
= Maximum resistance of device at 20°C measured one hour after tripping or reflow
soldering of 260°C for 20 sec.
Caution:
Operation beyond the specified rating may result in damage and possible arcing
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