CSS/CSSH Series — Ultra Precision Current Sensing Resistors
Features
• High Power Metal Alloy Current Sense Resistor • Excellent frequency response
• Very Low inductance (0.5nH to 5nH)
• High temperature performance: up to 275°C
• Low thermal EMF (<1uV/C)
• RoHS compliant / lead-free
• Proprietary processing technique produces extremely low resistance values
Electrical Specifications
Type / Code
Package Type
Power Rating
(Watts) @ 100°C
Ohmic Range and Tolerance
Resistance Temperature Coefficient
0.5%
± 50 ppm/°C
± 25 ppm/°C
± 15 ppm/°C
± 50 ppm/°C
± 25 ppm/°C
± 15 ppm/°C
± 50 ppm/°C
± 25 ppm/°C
± 15 ppm/°C
± 50 ppm/°C
± 25 ppm/°C
± 50 ppm/°C
± 25 ppm/°C
± 25 ppm/°C
± 15 ppm/°C
± 25 ppm/°C
± 15 ppm/°C
–
0.007
Ω
– 0.050
Ω
–
–
0.003
Ω
– 0.0069
Ω
0.007
Ω
– 0.1000
Ω
–
–
0.007
Ω
– 0.075
Ω
0.0005
Ω
– 0.002Ω
0.002
Ω
– 0.010Ω
–
0.001
Ω
– 0.003
Ω
0.004
Ω
– 0.007
Ω
0.008
Ω
– 0.100
Ω
0.004
Ω
– 0.007
Ω
0.008
Ω
– 0.050
Ω
1%, 5%
0.001
Ω
– 0.004
Ω
0.005
Ω
– 0.015
Ω
0.016
Ω
– 0.050
Ω
0.0005
Ω
– 0.0030
Ω
0.0040
Ω
– 0.0069
Ω
0.0070
Ω
– 0.1000
Ω
0.0005
Ω
– 0.0030
Ω
0.0040
Ω
– 0.0069
Ω
0.0070
Ω
– 0.0750
Ω
0.0005
Ω
– 0.002
Ω
0.003
Ω
–- 0.010
Ω
0.00025
Ω
– 0.0009
Ω
0.0010
Ω
– 0.0030
Ω
0.004
Ω
– 0.007
Ω
0.008
Ω
– 0.100
Ω
0.004
Ω
– 0.007
Ω
0.008
Ω
– 0.050
Ω
CSS 1206
1206
0.5W
CSS 2010
2010
1.0W
CSS 2512
2512
2.0W
CSSH 2512
CSS 2725
CSS 2728
CSSH 2728
2512
2725
2728
2728
3.0W
4.0W
3.0W
4.0W
How to Order
CSS
SEI Type
2725
Code
0.003
Nominal Resistance
1%
Tolerance
R
Packaging
Type
CSS
CSSH
Description
Metal Alloy
High Power
Code
1206
2010
2512
(H) 2512
2725
2728
(H) 2728
Wattage
0.5W
1.0W
2.0W
3.0W
4.0W
3.0W
4.0W
Size
1206
2010
2512
2512
2725
2728
2728
Tolerance
0.5%
1.0%
5.0%
SEI Type Pkg Qty
All
All
2,000
1,000
Description
7" - Embossed Plastic
7" - Embossed Plastic
Code
R
I
Toll Free: (888) SEI-SEIS
(888) 734-7347
www.seielect.com
41
email: marketing@seielect.com
Rev 01/09
CSS/CSSH Series — Ultra Precision Current Sensing Resistors
Performance Characteristics
Test
Load Life
Test Method
MIL-STD-5202F-Method 108A
RCWV at 70°C; 1.5hrs ON; 0.5hrs OFF
Total 1024 ± 24hrs
MIL-STD-202F-Method 210E
260 ± 5°C for 10 ± 1sec
MIL-STD-202F-Method 208H
245 ± 5°C for 2 ± 0.5secs
MIL-STD-202F-Method 107G
-55°C to 150°C, 100cycles
JIS-C-5202-5.5
3x - 5x rated power for 5 sec
JIS-C-5202-7.4
-55°C: 30 min. 25°C: 2 to 3 min.
155°C: 30 min. 25°C: 2 to 3 min.
(5 Cycles)
MIL-STD-202F-Method 106G
MIL-STD-202F-Method 302
Apply 100Vdc for 1 minute
-
Test Specification
±0.5%
Typical
≤0.5%
Resistance to Soldering Heat
Solderability
Thermal Shock
Short Time Overload
±0.5%
min 95% coverage
±0.5%
±0.5%
≤0.25%
≥95%
≤0.5%
≤0.5%
Temperature Cycling
±0.5%
≤0.5%
Moisture Resistance
Insulation Resistance
Leach Resistance
±0.5%
1MΩ minimum
90 seconds min
≤0.5%
≥1MΩ
>90
seconds
Operating Temperature Range : -65°C to +275°C
Mechanical Specifications
Type / Code
CSS 1206
CSS 2010 (≤3mΩ)
CSS 2512 (≤4mΩ)
CSS 2512 (≥5mΩ)
CSSH 2512(≤1.5mΩ)
CSSH 2512 (≥2mΩ)
CSS 2725 (0.25mΩ)
CSS 2725 (1mΩ)
CSS 2725 (1.5mΩ)
CSS 2725 (2mΩ)
CSS 2725 (2.5mΩ)
CSS 2725 (3mΩ)
CSS 2728
CSSH 2728
L
Body Length
3.15 ± 0.254
5.10 ± 0.254
6.25 ± 0.254
6.25 ± 0.254
6.25 ± 0.254
6.25 ± 0.254
6.80 ± 0.254
6.80 ± 0.254
6.80 ± 0.254
6.80 ± 0.254
6.80 ± 0.254
6.80 ± 0.254
7.20 ± 0.254
7.20 ± 0.254
W
Body Width
1.60 ± 0.254
2.54 ± 0.254
3.30 ± 0.254
3.30 ± 0.254
3.30 ± 0.254
3.30 ± 0.254
6.70 ± 0.254
6.70 ± 0.254
6.70 ± 0.254
6.70 ± 0.254
6.70 ± 0.254
6.70 ± 0.254
6.70 ± 0.254
6.70 ± 0.254
H
Body Height
0.75 ± 0.254
0.80 ± 0.254
0.80 ± 0.254
0.80 ± 0.254
0.80 ± 0.254
0.80 ± 0.254
1.00 ± 0.254
1.10 ± 0.254
1.00 ± 0.254
0.90 ± 0.254
0.90 ± 0.254
0.90 ± 0.254
1.00 ± 0.254
1.00 ± 0.254
a
Top Termination
0.50 ± 0.254
0.80 ± 0.254
1.88 ± 0.254
1.13 ± 0.254
1.88 ± 0.254
1.13 ± 0.254
2.15 ± 0.254
2.15 ± 0.254
2.15 ± 0.254
1.80 ± 0.254
1.65 ± 0.254
1.30 ± 0.254
1.15 ± 0.254
1.15 ± 0.254
b
Bottom Termination
0.50 ± 0.254
0.80 ± 0.254
1.88 ± 0.254
1.13 ± 0.254
1.88 ± 0.254
1.13 ± 0.254
2.15 ± 0.254
2.15 ± 0.254
2.15 ± 0.254
1.80 ± 0.254
1.65 ± 0.254
1.30 ± 0.254
1.15 ± 0.254
1.15 ± 0.254
Units
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
Toll Free: (888) SEI-SEIS
(888) 734-7347
www.seielect.com
42
email: marketing@seielect.com
Rev 01/09
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