CSR / CSRN Series — Thick Film Current Sensing Resistors
Features
• 0402 to 2512 & 1225 sizes available
• Power ratings to 3W
• Low inductance – less than 0.2nH typically
• Non-standard resistance values available
• RoHS compliant
Electrical Specifications
Type / Code
Package Type
Power Rating
(Watts) @ 70°C
0.063W(0.125W)**
0.010W (0.125W)**
0.125W (0.250W)**
0.250W (0.500W)**
1.000W
0.750W (1.000W)**
0.750W (1.000W)**
1.000W (2.000W)**
1.000W (2.000W)**
3.000W
Dielectric
Withstanding Voltage
200V
200V
200V
200V
200V
200V
200V
200V
200V
200V
Resistance Temperature
Coefficient
±200 ppm/°C
±300 ppm/°C
±200 ppm/°C
±100 ppm/°C *
±300 ppm/°C
±150 ppm/°C
±100 ppm/°C *
±250 ppm/°C
±200 ppm/°C
±200 ppm/°C
±200 ppm/°C
±150 ppm/°C
Ohmic Range and Tolerance
1%
0.051Ω – 1.000Ω
0.021Ω – 1.000Ω
0.010Ω – 1.000Ω
0.010Ω – 1.000Ω
0.010Ω – 0.019Ω
0.020Ω – 0.500Ω
0.010Ω – 1.000Ω
0.010Ω – 1.000Ω
0.010Ω – 1.000Ω
0.010Ω – 1.000Ω
0.003Ω
−
0.020Ω
0.021Ω
−
3.000Ω
5%
0.051Ω – 1.000Ω
0.021Ω – 1.000Ω
0.021Ω – 1.000Ω
0.010Ω – 1.000Ω
0.010Ω – 0.019Ω
0.020Ω – 0.500Ω
0.010Ω – 1.000Ω
0.010Ω – 1.000Ω
0.010Ω – 1.000Ω
0.010Ω – 1.000Ω
0.003Ω
−
0.020Ω
0.021Ω
−
3.000Ω
CSR 1/8S
CSR 1/8
CSR 1/4
CSR 1/2
CSRN 1S
CSR 1
CSRN 1
CSR 2
CSRN 2
CSR 3
0402
0603
0805
1206
0815
2010
2010
2512
2512
1225
* Contact factory for TCR on values below 0.05Ω
** Higher power rating for each package size is valid if ambient temp <= 80°C and terminal temp <= 105°C
Performance Characteristics
Test
Moisture Resistance
Load Life
Leach Resistance
Resistance to Soldering Heat
Solderability
Temperature Cycling
Thermal Shock
Short Time Overload
Insulation Resistance
Test Specification
±0.5%
±0.5%
90 seconds min
±0.5%
min 95% coverage
±0.5%
±0.5%
±0.5%
1MΩ minimum
Typical
≤0.5%
≤0.5%
>90
seconds
≤0.25%
≥95%
≤0.5%
≤0.5%
≤0.5%
≥1MΩ
Operating Temperature Range : -55°C to +155°C
How to Order
CSR
SEI Type
1/2
Code
0.01
Nominal Resistance
1%
Tolerance
R
Packaging
Type
CSR
CSRN
Description
Standard RoHS
Narrow Terminations RoHS
Code
1/8S
1/8
1/4
1/2
1S
1
2
3
Wattage
0.125W
0.125W
0.250W
0.500W
1.000W
1.000W
2.000W
3.000W
Size
0402
0603
0805
1206
0815
2010
2512
1225
Tolerance
1%
5%
SEI Types
1/8S
1/8, 1/4, 1/2
1, 2
1S, 3
ALL
1, 2
Pkg Qty Description Code
10,000
5,000
4,000
2,000
1,000
5,000
7" reel
13" reel
I
G
7" reel
R
Toll Free: (888) SEI-SEIS
(888) 734-7347
www.seielect.com
39
email: marketing@seielect.com
Rev 02/09
CSR / CSRN Series — Thick Film Current Sensing Resistors
Mechanical Specifications
Type / Code
CSR 1/8S
CSR 1/8
CSR 1/4
CSR 1/2
CSRN 1S
CSR 1
CSRN 1
CSR 2
CSRN 2
CSR 3
L
Body Length
0.039 ± 0.004
0.991 ± 0.102
0.063 ± 0.004
1.600 ± 0.102
0.079 ± 0.008
2.006 ± 0.203
0.120 ± 0.006
3.048 ± 0.152
0.079 ± 0.008
2.000 ± 0.200
0.197 ± 0.008
5.003 ± 0.203
0.197 ± 0.006
5.004 ± 0.152
0.252 ± 0.008
6.401 ± 0.203
0.246 ± 0.006
6.248 ± 0.152
0.125 ± 0.005
3.180 ± 0.127
W
Body Width
0.020 ± 0.004
0.508 ± 0.102
0.032 ± 0.004
0.813 ± 0.102
0.049 ± 0.008
1.245 ± 0.203
0.063 ± 0.008
1.600 ± 0.203
0.148 ± 0.008
3.750 ± 0.200
0.100 ± 0.008
2.540 ± 0.203
0.100 ± 0.006
2.540 ± 0.152
0.126 ± 0.008
3.200 ± 0.203
0.121 ± 0.006
3.073 ± 0.152
0.250 ± 0.005
6.350 ± 0.127
H
Body Height
0.014 ± 0.004
0.35 ± 0.102
0.018 ± 0.004
0.457 ± 0.102
0.016 ± 0.004
0.406 ± 0.102
0.020 ± 0.006
0.508 ± 0.152
0.024 ± 0.004
0.610 ± 0.102
0.020 ± 0.006
0.508 ± 0.152
0.024 ± 0.004
0.610 ± 0.102
0.020 ± 0.006
0.508 ± 0.152
0.023 ± .004
0.584 ± 0.102
0.030 ± 0.005
0.900 ± 0.127
a
Top Termination
0.006 ± 0.004
0.152 ± 0.102
0.012 ± 0.008
0.305 ± 0.203
0.016 ± 0.008
0.406 ± 0.203
0.020 ± 0.012
0.510 ± 0.304
0.016 ± 0.008
0.400 ± 0.200
0.067 ± 0.006
1.702 ± 0.152
0.024 ± 0.012
0.610 ± 0.305
0.075 ± 0.006
1.905 ± 0.152
0.023 ± 0.012
0.584 ± 0.305
0.023 ± 0.012
0.584 ± 0.305
b
Bottom Termination
0.006 ± 0.004
0.152 ± 0.102
0.012 ± 0.008
0.305 ± 0.203
0.016 ± 0.008
0.406 ± 0.203
0.016 ± 0.010
0.406 ± 0.254
0.016 ± 0.008
0.400 ± 0.200
0.067 ± 0.006
1.702 ± 0.152
0.020 ± 0.010
0.508 ± 0.254
0.075 ± 0.006
1.905 ± 0.152
0.020 ± 0.010
0.508 ± 0.254
0.020 ± 0.010
0.508 ± 0.254
Units
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
Solder Pad Dimensions
Type / Code
CSR 1/8S
CSR 1/8
CSR 1/4
CSR 1/2
CSRN 1S
CSR 1
CSRN 1
CSR 2
CSRN 2
CSR 3
L
Total Length
0.060
1.50
0.091
2.30
0.102
2.60
0.150
3.80
0.114
2.90
0.228
5.80
0.232
5.90
0.287
7.30
0.291
7.40
0.157
4.00
W
Total Width
0.024
0.60
0.039
1.00
0.059
1.50
0.075
1.90
0.177
4.50
0.118
3.00
0.118
3.00
0.158
4.00
0.158
4.00
0.30
7.60
D
Pad Depth
0.020
0.50
0.030
0.75
0.032
0.8
0.035
0.90
0.037
0.95
0.087
2.20
0.043
1.10
0.098
2.50
0.047
1.20
0.051
1.30
Units
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
CSR3 (1225)
4 Terminal Bottom
Toll Free: (888) SEI-SEIS
(888) 734-7347
www.seielect.com
40
email: marketing@seielect.com
Rev 02/09
