Littelfuse USBR Series User Manual
Polyfuse, Resettable ptcs, Usbr series
63
Revised: July 12, 2010
POLYFUSE
®
Resettable PTCs
© 2010 Littelfuse, Inc
USBR Series
Radial Leaded > USBR Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/USBR.html for current information.
USBR S
eries
USBR Series
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provide overcurrent protection for USB applications
where space is not a concern.
Electrical Characteristics
Part Number
I
hold
(A)
I
trip
(A)
V
max
(Vdc)
I
max
(A)
P
d
max.
(W)
Maximum Time
To Trip
Resistance
Agency
Approvals
Current
(A)
Time
(Sec.)
R
min
(Ω)
R
1max
(Ω)
06R075B
0.75
1.30
6
40
0.3
8.00
0.4
0.100
0.230
X
X
06R120B
1.20
2.00
6
40
0.6
8.00
0.5
0.065
0.140
X
X
06R155B
1.55
2.70
6
40
0.6
7.75
2.2
0.040
0.100
X
X
16R090B
0.90
1.80
16
40
0.6
8.00
1.2
0.070
0.180
X
X
16R110B
1.10
2.20
16
40
0.7
8.00
2.3
0.050
0.140
X
X
16R135B
1.35
2.70
16
40
0.8
8.00
4.5
0.040
0.120
X
X
16R160B
1.60
3.20
16
40
0.9
8.00
9.0
0.030
0.110
X
X
16R185B
1.85
3.70
16
40
1.0
8.00
10.0
0.030
0.090
X
X
16R250B
2.50
5.00
16
40
1.2
8.00
40.0
0.020
0.060
X
X
Description
Features
Applications
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lead–free
t'BTUUJNFoUPoUSJQ
t.FFUTBMM64#QSPUFDUJPO
requirements
t"TIPSUDJSDVJUSBUJOH
t0QFSBUJOHWPMUBHFTPG
6-16V
t$PNQVUFSTQFSJQIFSBMT
t"OZ64#BQQMJDBUJPO
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
and flame.
Agency Approvals
AGENCY
AGENCY FILE NUMBER
E183209
R50119318