Polyfuse, Resettable ptcs, Radial leaded > usbr series – Littelfuse USBR Series User Manual
Page 3: Usbr s eries
65
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
Environmental Specifications
Operating/Storage
Temperature
-40°C to +85°C
Maximum Device Surface
Temperature in Tripped State
125°C
Passive Aging
+85°C, 1000 hours
-/+5% typical resistance change
Humidity Aging
+85°C, 85% R.H., 1000 hours
-/+5% typical resistance change
Thermal Shock
+85°C to -40°C 10 times
-/+5% typical resistance change
Solvent Resistance
MIL–STD–202, Method 215F
Moisture Sensivitivy Level
Level 1, J–STD–020C
Physical Specifications
Lead Material
.90-2.50A: Tin-plated Copper clad steel
.75A: Tin-plated Copper
Soldering
Characteristics
Solderability per MIL–STD–202,
Method 208E
Insulating Material
Cured, flame retardant epoxy polymer
meets UL 94V-0 requirements.
Device Labeling
Marked with ‘LF’, voltage, current rating,
and date code.
Part
Number
Figure
A
B
C
D
E
Physical Characteristics
Inches
mm
Inches
mm
Inches
mm
Inches
mm
Inches
mm
Lead (dia)
Material
Max.
Max.
Max.
Max.
Typ.
Typ.
Min.
Min.
Max.
Max.
Inches
mm
06R075B
1
0.27
6.9
0.45
11.4
0.20
5.1
0.30
7.6
0.12
3
0.020
0.51
Sn/Cu
06R120B
1
0.27
6.9
0.46
11.7
0.20
5.1
0.30
7.6
0.12
3
0.020
0.51
Sn/CuFe
06R155B
1
0.27
6.9
0.46
11.7
0.20
5.1
0.30
7.6
0.12
3
0.020
0.51
Sn/CuFe
16R090B
2
0.29
7.4
0.48
12.2
0.20
5.1
0.30
7.6
0.12
3
0.020
0.51
Sn/CuFe
16R110B
2
0.29
7.4
0.56
14.2
0.20
5.1
0.30
7.6
0.12
3
0.020
0.51
Sn/CuFe
16R135B
2
0.35
8.9
0.53
13.5
0.20
5.1
0.30
7.6
0.12
3
0.020
0.51
Sn/CuFe
16R160B
2
0.35
8.9
0.60
15.2
0.20
5.1
0.30
7.6
0.12
3
0.020
0.51
Sn/CuFe
16R185B
2
0.40
10.2
0.62
15.7
0.20
5.1
0.30
7.6
0.12
3
0.020
0.51
Sn/CuFe
16R250B
2
0.45
11.4
0.72
18.3
0.20
5.1
0.30
7.6
0.12
3
0.020
0.51
Sn/CuFe
Dimensions (mm)
Figure 2
A
E
B
C
D
A
C
B
D
E
Part Marking System
06
075B
Double Sided Marking
0.75A to 1.55A
Top Side
Voltage Rating
Current Rating
Littelfuse
Trademark
06
XXXX
Bottom Side
Voltage Rating
Date Code
(Contact Littelfuse
for additional
information)
Littelfuse
Trademark
Double Sided Marking
0.90A to 1.10A
Top Side
16
110U
Voltage Rating
Current Rating
Littelfuse
Trademark
Bottom Side
16
XXXX
Voltage Rating
Date Code
(Contact Littelfuse
for additional
information)
Littelfuse
Trademark
16
135B
XXXX
Voltage Rating
Current Rating
Date Code
(Contact Littelfuse
for additional
information)
Littelfuse
Trademark
Single Sided Marking
1.35A to 2.50A
Figure 1