POLYFUSE
®
Resettable PTCs
Radial Leaded
USBR Series
Description
• The USBR series radial leaded device is designed to
provide overcurrent protection for USB applications
where space is not a concern.
Features
• RoHS compliant and
lead-free
• Fast time-to-trip
• Meets all USB protection
requirements
Applications
• Computers & peripherals
• Any USB application
• 40A short circuit rating
• Operating voltages of
6-16V
Agency Approvals
AGENCY
AGENCY FILE NUMBER
E183209
R50082521
Electrical Characteristics
I
hold
(A)
0.75
1.20
1.55
0.90
1.10
1.35
1.60
1.85
2.50
I
trip
(A)
1.30
2.00
2.70
1.80
2.20
2.70
3.20
3.70
5.00
V
max
(Vdc)
6
6
6
16
16
16
16
16
16
I
max
(A)
40
40
40
40
40
40
40
40
40
P
d
max.
(W)
0.3
0.6
0.6
0.6
0.7
0.8
0.9
1.0
1.2
Maximum Time
To Trip
Current
(A)
8.00
8.00
7.75
8.00
8.00
8.00
8.00
8.00
8.00
Time
(Sec.)
0.4
0.5
2.2
1.2
2.3
4.5
9.0
10.0
40.0
Resistance
R
min
(Ω)
0.100
0.065
0.040
0.070
0.050
0.040
0.030
0.030
0.020
R
1max
(Ω)
0.230
0.140
0.100
0.180
0.140
0.120
0.110
0.090
0.060
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Agency
Approvals
Part Number
06R075B
06R120B
06R155B
16R090B
16R110B
16R135B
16R160B
16R185B
16R250B
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.
USBR Series
Specifications are subject to change without notice.
Electronics Designers Guide
www.littelfuse.com
©2006 Littelfuse
POLYFUSE
®
Resettable PTCs
Radial Leaded
Temperature Rerating
Ambient Operation Temperature
-40°C
Part Number
06R075B
06R120B
06R155B
16R090B
16R110B
16R135B
16R160B
16R185B
16R250B
1.05
1.69
2.17
1.31
1.60
1.96
2.32
2.68
3.63
30R Series
-20°C
0°C
23°C
40°C
Hold Current (A)
50°C
60°C
70°C
85°C
0.95
1.52
1.96
1.17
1.43
1.76
2.08
2.41
3.25
0.85
1.36
1.75
1.04
1.27
1.55
1.84
2.13
2.88
0.75
1.20
1.55
0.90
1.10
1.35
1.60
1.85
2.50
0.65
1.04
1.34
0.75
1.00
1.12
1.33
1.54
2.08
0.60
0.96
1.24
0.69
0.92
1.04
1.23
1.42
1.93
0.55
0.88
1.13
0.61
0.75
0.92
1.09
1.26
1.70
0.50
0.80
1.03
0.55
0.67
0.82
0.98
1.13
1.53
0.43
0.68
0.88
0.47
0.57
0.70
0.83
0.96
1.30
Average Time Current Curves
0.900A
1.10A
1.35A
1.60A
1.85A
2.50A
3.00A
4.00A
5.00A
6.00A
7.00A
8.00A
9.00A
Temperature Rerating Curve
Temperature Rerating Curve:
170%
150% B
Percentage of Rated Current
130% A
110%
90%
70%
50%
30%
10%
A
B
100000
10000
1000
TIME IN SECONDS
100
10
-40 -30 -20
-10
0
10
20 30
40
Temperature (°C)
50
60
70
80 85
1
A:
06R075B, 06R120B,
06R155B
B:
16R090B, 16R110B,
16R135B, 16R160B,
16R185B, 16R250B,
0.100
0.010
0.001
0.20
1
10
100
1000
CURRENT IN AMPERES
Specifications are subject to change without notice.
Note: 1.00 means the number one with two decimal places.
AKL V3.9 06.05.16
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.
USBR Series
Specifications are subject to change without notice.
Electronics Designers Guide
www.littelfuse.com
©2006 Littelfuse
POLYFUSE
®
Resettable PTCs
Radial Leaded
Soldering Parameters - Wave Soldering
Refer to the condition
recommended by the
flux manufacturer.
Temperature (°C)
Pre-Heating Zone
260
220
Soldering
Cooling
Max. ramping rate
should not exceed
4°C/Sec.
Max. solder temperature
should not exceed
260°C
Cooling by natural
convection in air.
190
160
Preheating
Soldering Zone
Cooling Zone
0
60 min.
5 max.
Time(s)
Physical Specifications
Lead Material
Soldering
Characteristics
Insulating Material
Device Labeling
.90-2.50A: Tin-plated copper clad steel
.75A: Tin-plated copper
Solderability per MIL-STD-202,
Method 208E
Cured, flame retardant epoxy polymer
meets UL94V-0 requirements.
Marked with LF, voltage, current rating,
and date code.
Environmental Specifications
Operating/Storage
Temperature
Maximum Device Surface
Temperature in Tripped State
Passive Aging
Humidity Aging
-40°C to +85°C
125°C
+85°C, 1000 hours
±5% typical resistance change
+85°C, 85%R.H. 1000 hours
±5% typical resistance change
+85°C to -40°C 10 times
±5% typical resistance change
MIL-STD-202, Method 215F
Thermal Shock
Solvent Resistance
USBR Series
Specifications are subject to change without notice.
Electronics Designers Guide
www.littelfuse.com
©2006 Littelfuse
POLYFUSE
®
Resettable PTCs
Radial Leaded
A
Figure 1
Figure 2
Dimensions (mm)
A
Figure 2
E
E
Figure 1
Figure 1 2
Figure
Figure 1 Figure 2
A
MARKING
A
A
MARKING
MARKING
E
MARKING
A
A
MARKING
MARKING
E A
MARKING
B
B
B
B
B
B
MARKING
B
B
Figure 1
D
C
C
Figure 2
D
D
Figure 2
D
C
C
D
D
E
C
D
D
Figure 1
A
A
mm
6.9
B
6.9
6.9
7.4
7.4
Max.
C
A
A
Part
Number
06R075B
06R120B
06R155B
16R090B
Figure 1
Figure 1
Littelfuse
Trademark
Figure
MARKING
C
E
C
Figure
E
Physical Characteristics
Lead
Sided Marking
(dia)
Double
Inches
Top Side
mm
Voltage
Littelfuse Rating
Current Rating
Trademark
A
B
Max.
0.46
0.46
Max.
11.4
11.7
MARKING
C
D
Typ.
5.1
5.1
1.35A to 2.50A
MARKING
Double Sided Marking
0.75A to 1.55A
Inches
0.27
06
0.27
0.27
0.29
0.35
Inches
B
mm
Sided Marking
Inches
Single
Typ.
0.45
06
Littelfuse
16
Trademark Voltage Rating
135B
Littelfuse
XXXX
Current Rating
Trademark
Max.
Top Side
075B
Double Sided Marking
1.35A to 2.50A Marking
Double Sided
0.75A to 1.55A
MARKING
0.75A to 1.55A
Top Side
Top Side
075B
mm
B
Inches
Sided MarkingSided
Inches
Sided Marking
mm
mm
Single Sided Marking
Double
Single
Marking Double
Min.
0.30
0.30
0.90A to 1.10A 1.35A to 2.50A
Top Side
Min.
7.6
7.6
7.6
7.6
7.6
7.6
7.6
7.6
7.6
Max.
0.12
0.12
0.12
0.12
0.12
0.12
0.90A to 1.10A
Top Side
Max.
3
3
3
3
3
3
3
3
0.90A to 1.10A
Material
Voltage Rating
Current Rating
Figure
1
0.90A to 1.10A
Top Side
Littelfuse
Voltage Rating
Trademark
Current Rating
B
0.20
06
0.20
075B
Littelfuse
Voltage Rating
Trademark
Current Rating
Voltage Rating
Date Code
Current
(Contact Littelfuse Rating
for additional
information)
135B
Trademark
XXXX
16
Littelfuse
Voltage Rating
Littelfuse
16
Current Rating
Trademark
110U
Date Code
(Contact Littelfuse
for additional
information)
Current Rating
135B
XXXX
Voltage Rating
16
Trademark
Littelfuse
Double Sided Marking
11.7
0.75A to 1.55A
0.20
5.1
D
0.30
D
Side
0.48
12.2
Top
0.20
5.1
0.30
Littelfuse
14.2
0.56
Trademark
075B
0.12
Sided Marking
0.020
3
Single
1.35A to 2.50A
16
Voltage Rating
110U
Current Rating
Date Code
(Contact Littelfuse
for additional
information)
0.020
0.020
0.020
0.020
0.020
110U
16
0.51
0.51
0.51
0.51
0.51
0.51
0.51
0.51
Sn/Cu
Sn/CuFe
Sided
1
Double
Marking
Sn/CuFe
Sn/CuFe
Littelfuse
Trademark
1
2
2
2
2
2
2
16R110B
Figure
0.29
2
Figure 2
16R135B
8.9
C
D
0.20
06
D
0.20
0.20
06
0.20
XXXX
5.1
Rating
0.30
Voltage
5.1
5.1
5.1
5.1
Voltage Rating
Date Code
(Contact Littelfuse
for additional
information)
Littelfuse
Trademark
0.53
13.5
0.20
C
Bottom Side
Current Rating
135B
XXXX
16
0.30
0.30
0.30
0.30
AA
MARKING
MARKING
Voltage Rating
Current Rating
Date Code
(Contact Littelfuse
for additional
information)
Sn/CuFe
Sn/CuFe
Sn/CuFe
110U
16
Voltage
Curren
16R160B
A A
0.35
8.9
E E
Bottom Side
15.2
0.60
Bottom Side
C
C
06
10.2 0.62
06
15.7
16R185B
0.40
Littelfuse
Trademark
Bottom Side
XXXX
Bottom Side
XXXX
0.020
Bottom
0.51
Side
Voltage
Littelfuse Rating
Date Code
Trademark
(Contact Littelfuse
for additional
information)
16R250B
0.45
XXXX
11.4
Littelfuse
Voltage Rating
Trademark
Date Code
(Contact Littelfuse
for additional
information)
XXXX
0.72
18.3
Voltage
Littelfuse Rating
Date Code
Trademark
(Contact Littelfuse
for additional
information)
Littelfuse
Trademark
16
Littelfuse
Voltage Rating
Trademark
Date Code
(Contact Littelfuse
for additional
information)
0.12
0.12
16
0.020
0.020
XXXX
16
Voltage Rating
Date Code
(Contact Littelfuse
for additional
information)
Sn/CuFe
Sn/CuFe
MARKING
MARKING
BB
B B
Part Marking System
Double Sided Marking
0.75A to 1.55A
Top Side
Single Sided Marking
1.35A to 2.50A
Bottom Side
Single Sided Marking
Littelfuse
1.35A to 2.50A
Trademark
XXXX
Double Sided Marking
0.90A to 1.10A
Top Side
Bottom Side
Voltage Rating
Current Rating
Littelfuse
Trademark
DD
CC
Littelfuse
Trademark
Double Sided Marking
Littelfuse
0.75A to 1.55A
Trademark
Top Side
075B
06
D D
Voltage Rating
Current Rating
Littelfuse
Trademark
Littelfuse
Trademark
06
075B
06
C C
Voltage Rating
Current Rating
135B
XXXX
16
Current Rating
Voltage Rating
Date Code Date Code
(Contact Littelfuse
(Contact Littelfuse
for additional for additional
information) information)
Littelfuse
Voltage Rating
Trademark
Current Rating
Date Code
(Contact Littelfuse
for additional
information)
135B
XXXX
16
Voltage Rating
Double Sided Marking
Littelfuse
0.90A to 1.10A
Trademark
Top Side
16
110U
16
XXXX
16
Voltage
Date C
(Contac
for add
informa
110U
Voltage Rating
Current Rating
ng
Bottom Marking
Single Marking
Single SidedSidedSide
1.35A1.35A to 2.50A
to 2.50A
Littelfuse
Trademark
Bottom Side
Double Marking
Double SidedSided Marking
0.90A0.90A to 1.10A
to 1.10A
Top
Top Side Side
Littelfuse
Littelfuse
Trademark
Trademark
Littelfuse
Trademark
Bottom Side
Littelfuse
Littelfuse
Trademark
Trademark
XXXX
VoltageVoltage RatingLittelfuse
Rating
Current
Current Rating RatingTrademark
06
Voltage Rating
Date Code
XXXX
(Contact Littelfuse
for additional
VoltageVoltage Rating
Rating
information)
16 16
Current
Current Rating Rating
135B 135B
Voltage
XXXX XXXX
Rating Date Code Code
Date
Date Code
(Contact Littelfuse
(Contact Littelfuse
(Contact Littelfuse additional
for additional
for
for additional
information)
information)
information)
06
XXXX
16
Bottom Side
Littelfuse
VoltageVoltage Rating
Rating
Trademark
Current
Current Rating Rating
Voltage Rating
Date Code
(Contact Littelfuse
for additional
information)
110U 110U
16
16
XXXX
16
Voltage Rating
Date Code
(Contact Littelfuse
for additional
information)
Bottom
Bottom Side Side
VoltageVoltage Rating
Rating
Date
Date Code Code
(Contact Littelfuse
(Contact Littelfuse
for additional
for additional
information)
information)
USBR Series
Specifications are subject to change without notice.
Littelfuse
Littelfuse
Trademark
Trademark
XXXX XXXX
16
16
VoltageVoltage Rating
Rating
Date
Date Code Code
(Contact Littelfuse
(Contact Littelfuse
for additional
for additional
information)
information)
Electronics Designers
www.littelfuse.com
Guide
©2006 Littelfuse
POLYFUSE
®
Resettable PTCs
Radial Leaded
Part Numbering System
16 R 090
B PR
PACKAGING STYLE
BLANK:
Bulk
R:
Tape & Ammo
QUANTITY CODE:
P=2000 U=500
TYPE: B=USB
I
HOLD
CURRENT CODE (SEE TABLE BELOW)
SERIES
R: RADIAL
VOLTAGE RATING (VDC)
Packaging
I
hold
(A)
0.75
1.20
1.55
0.90
1.10
1.35
1.60
1.85
2.50
I
hold
Code
075
120
155
080
110
135
160
185
250
Voltage
6
6
6
16
16
16
16
16
16
Packaging
Option
Bulk
Tape and Ammo
Bulk
Tape and Ammo
Bulk
Tape and Ammo
Bulk
Tape and Ammo
Bulk
Tape and Ammo
Bulk
Tape and Ammo
Bulk
Tape and Ammo
Bulk
Tape and Ammo
Bulk
Tape and Ammo
Quantity
500
2000
500
2000
500
2000
500
2000
500
2000
500
2000
500
2000
500
2000
500
2000
Quantity &
Packaging Codes
U
PR
U
PR
U
PR
U
PR
U
PR
U
PR
U
PR
U
PR
U
PR
USBR Series
Specifications are subject to change without notice.
Electronics Designers Guide
www.littelfuse.com
©2006 Littelfuse
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