Rev Date: 08/07/2020 1 www.seielect.com
This specification may be changed at any time without prior notice marketing@seielect.com
Please confirm technical specifications before you order and/or use.
CSS / CSSH Series
Ultra Precision Metal Alloy Current Sensing Chip Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
Features:
• High power metal alloy current sense resistor
• High temperature performance up to 225C (for operation up to 275ºC, contact Stackpole)
• Low thermal EMF (< 1µ V/C)
• Proprietary processing technique produces extremely low resistance values
• Qualified to AEC-Q200
• RoHS compliant, lead free and halogen free
Please refer to the High-Power Resistor Application Note (page 8) for more information on designing and implementing high power resistor types.
Electrical Specifications - CSS
Electrical Specifications – CSSH (High Power)
0.5% 1%, 2%, 5%
44.72 89.44 ± 100 - 0.0005 - 0.001
25.81 51.63 ± 75 - 0.0015 - 0.002
20 40 ± 50 - 0.0025 - 0.015
± 150 - 0.0003
± 50 - 0.0005 - 0.0025
± 25 0.007 - 0.01 0.003 - 0.01
± 50 0.0101 - 0.05 0.0101 - 0.08
± 25 0.004 - 0.007 0.004 - 0.007
± 15 0.008 - 0.019 0.008 - 0.05
Type / Code
Maximum
Power Rating
(W)
Maximum
Rating Current
(A)
Maximum
Overload
Current (A)
Ohmic Range (Ω) and Tolerance
70.71
CSSH2512
3
100
223.61
CSSH2728
4
31.62
CSSH0805
1
0.5% 1% 5%
CSS0201 0.2 4.47 7.07 ± 200 - 0.01, 0.02 -
11.48 18.16 ± 150 - 0.0025 -
8.12 12.84 ± 100 - 0.005, 0.006, 0.008, 0.01, 0.015, 0.02 -
12.84 20.31 ± 150 - 0.002 -
11.49 18.16 ± 100 - 0.0025, 0.003, 0.004, 0.005 -
7.41 11.72 ± 75 - 0.01, 0.015, 0.02 -
± 150 0.001, 0.0015
± 100 0.002, 0.003, 0.004, 0.005
18.25 28.86 ± 100 - 0.0015 -
15.81 25 ± 75 - 0.002, 0.003, 0.004, 0.005 -
9.12 14.43 ± 50 - 0.006, 0.007, 0.01, 0.015, 0.02 -
± 50 -
± 25 0.007 - 0.015
± 15 0.016 - 0.05
± 50 -
± 25 -
± 15 0.007 - 0.1
± 50 -
± 25 -
± 15 0.007 - 0.075
± 100 -
± 50 -
± 25 0.004 -0.007
± 15 0.008 - 0.19
CSS4527 5100 173 ± 50 0.007 - 0.12
31.63
50
-
-
0.008 - 0.1
61.24
27.39
63.25
63.25
126.49
316.23
31.62
141.42
31.62
63.25
0.004 - 0.006
0.0005 - 0.12
0.004 - 0.006
0.007 - 0.075
0.0002
0.00025 - 0.003
0.004 - 0.007
0.007 - 0.1
0.0005 - 0.003
0.001 - 0.004
0.005 - 0.015
0.016 - 0.05
0.001 - 0.003
Ohmic Range (Ω) and Tolerance
CSS0402
0.33
CSS0603
0.33
Maximum
Overload
Current (A)
TCR
(ppm/ºC)
Type / Code
Maximum
Power Rating
(W)
Maximum
Rating Current
(A)
CSS0508
1
CSS2728
CSS2512
1
3
CSS2010
CSS2725
4
CSS1206
1
2
CSS0805
0.5
Rev Date: 08/07/2020 2 www.seielect.com
This specification may be changed at any time without prior notice marketing@seielect.com
Please confirm technical specifications before you order and/or use.
CSS / CSSH Series
Ultra Precision Metal Alloy Current Sensing Chip Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
Mechanical Specifications (0201 – 0805)
0.024 ±0.006 0.012 ±0.006 0.010 ±0.004 0.006 ±0.004
inches
0.60 ±0.15 0.30 ±0.15 0.25 ±0.10 0.15 ±0.10 mm
0.039 ±0.006 0.022 ±0.006 0.012 ±0.004 0.012 ±0.004
inches
1.00 ±0.15 0.55 ±0.15 0.30 ±0.10 0.30 ±0.10 mm
0.039 ±0.006 0.022 ±0.006 0.012 ±0.004 0.009 ±0.004
inches
1.00 ±0.15 0.55 ±0.15 0.30 ±0.10 0.23 ±0.10 mm
0.063 ±0.010 0.031 ±0.010 0.016 ±0.010 0.018 ±0.008
inches
1.60 ±0.25 0.80 ±0.25 0.40 ±0.25 0.45 ±0.20 mm
0.063 ±0.010 0.031 ±0.010 0.016 ±0.010 0.014 ±0.008
inches
1.60 ±0.25 0.80 ±0.25 0.40 ±0.25 0.35 ±0.20 mm
0.063 ±0.010 0.031 ±0.010 0.016 ±0.010 0.012 ±0.008
inches
1.60 ±0.25 0.80 ±0.25 0.40 ±0.25 0.30 ±0.20 mm
0.049 ±0.010 0.079 ±0.010 0.017 ±0.006 0.015 ±0.010
inches
1.25 ±0.25 2.00 ±0.25 0.42 ±0.15 0.38 ±0.25 mm
0.049 ±0.010 0.079 ±0.010 0.017 ±0.006 0.015 ±0.010
inches
1.25 ±0.25 2.00 ±0.25 0.42 ±0.15 0.37 ±0.25 mm
0.049 ±0.010 0.079 ±0.010 0.017 ±0.006 0.014 ±0.010
inches
1.25 ±0.25 2.00 ±0.25 0.42 ±0.15 0.36 ±0.25 mm
0.049 ±0.010 0.079 ±0.010 0.017 ±0.006 0.013 ±0.010
inches
1.25 ±0.25 2.00 ±0.25 0.42 ±0.15 0.32 ±0.25 mm
0.079 ±0.010 0.049 ±0.010 0.016 ±0.010 0.028 ±0.008
inches
2.00 ±0.25 1.25 ±0.25 0.40 ±0.25 0.70 ±0.20 mm
0.079 ±0.010 0.049 ±0.010 0.016 ±0.010 0.024 ±0.008
inches
2.00 ±0.25 1.25 ±0.25 0.40 ±0.25 0.60 ±0.20 mm
0.079 ±0.010 0.049 ±0.010 0.016 ±0.010 0.016 ±0.008
inches
2.00 ±0.25 1.25 ±0.25 0.40 ±0.25 0.40 ±0.20 mm
0.079 ±0.010 0.051 ±0.012 0.024 ±0.008 0.030 ±0.008
inches
2.00 ±0.25 1.30 ±0.30 0.60 ±0.20 0.75 ±0.20 mm
0.083 ±0.008 0.059 ±0.008 0.020 ±0.008 0.016 ±0.008
inches
2.10 ±0.20 1.50 ±0.20 0.50 ±0.20 0.40 ±0.20 mm
0.083 ±0.008 0.059 ±0.008 0.014 ±0.008 0.016 ±0.008
inches
2.10 ±0.20 1.50 ±0.20 0.35 ±0.20 0.40 ±0.20 mm
0.083 ±0.008 0.059 ±0.008 0.014 ±0.008 0.016 ±0.008
inches
2.10 ±0.20 1.50 ±0.20 0.35 ±0.20 0.40 ±0.20 mm
0.083 ±0.008 0.059 ±0.008 0.014 ±0.008 0.016 ±0.008
inches
2.10 ±0.20 1.50 ±0.20 0.35 ±0.20 0.40 ±0.20 mm
0.083 ±0.008 0.059 ±0.008 0.014 ±0.008 0.016 ±0.008
inches
2.10 ±0.20 1.50 ±0.20 0.35 ±0.20 0.40 ±0.20 mm
0.083 ±0.008 0.059 ±0.008 0.014 ±0.008 0.016 ±0.008
inches
2.10 ±0.20 1.50 ±0.20 0.35 ±0.20 0.40 ±0.20 mm
Unit
CSS0201
0.2
0.01, 0.02
Type / Code
Maximum Power
Rating (W)
Resistance Range
(Ω)
L
W
H
0.005 - 0.02
CSS0402
0.33
T2
Bottom
0.0025
CSS0603
0.33
0.002
0.0025, 0.003
0.004 - 0.02
0.002
CSS0508
0.001
0.0015
0.002
0.003 - 0.005
1
0.003 - 0.02
CSS0805
0.5
0.0015
0.0025 - 0.003
0.004 - 0.008
0.009 - 0.015
1
CSSH0805
0.0005
0.0015
0.002
0.001
Rev Date: 08/07/2020 3 www.seielect.com
This specification may be changed at any time without prior notice marketing@seielect.com
Please confirm technical specifications before you order and/or use.
CSS / CSSH Series
Ultra Precision Metal Alloy Current Sensing Chip Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
Mechanical Specifications (1206 – 2728)
0.126 ±0.010 0.063 ±0.010 0.025 ±0.010 0.020 ±0.010 0.020 ±0.010
inches
3.20 ±0.25 1.60 ±0.25 0.65 ±0.25 0.51 ±0.25 0.51 ±0.25 mm
0.126 ±0.010 0.063 ±0.010 0.022 ±0.010 0.020 ±0.010 0.020 ±0.010
inches
3.20 ±0.25 1.60 ±0.25 0.55 ±0.25 0.51 ±0.25 0.51 ±0.25 mm
0.126 ±0.010 0.063 ±0.010 0.022 ±0.010 0.024 ±0.010 0.024 ±0.010
inches
3.20 ±0.25 1.60 ±0.25 0.55 ±0.25 0.60 ±0.25 0.60 ±0.25 mm
0.126 ±0.010 0.063 ±0.010 0.022 ±0.010 0.020 ±0.010 0.020 ±0.010
inches
3.20 ±0.25 1.60 ±0.25 0.55 ±0.25 0.51 ±0.25 0.51 ±0.25 mm
0.200 ±0.010 0.100 ±0.010 0.031 ±0.010 0.051 ±0.010 0.051 ±0.010
inches
5.08 ±0.25 2.54 ±0.25 0.79 ±0.25 1.30 ±0.25 1.30 ±0.25 mm
0.200 ±0.010 0.100 ±0.010 0.025 ±0.010 0.031 ±0.010 0.031 ±0.010
inches
5.08 ±0.25 2.54 ±0.25 0.65 ±0.25 0.79 ±0.25 0.79 ±0.25 mm
0.246 ±0.010 0.126 ±0.010 0.031 ±0.010 0.074 ±0.010 0.074 ±0.010
inches
6.25 ±0.25 3.20 ±0.25 0.79 ±0.25 1.88 ±0.25 1.88 ±0.25 mm
0.246 ±0.010 0.126 ±0.010 0.025 ±0.010 0.044 ±0.010 0.044 ±0.010
inches
6.25 ±0.25 3.20 ±0.25 0.65 ±0.25 1.12 ±0.25 1.12 ±0.25 mm
0.246 ±0.010 0.126 ±0.010 0.039 ±0.010 0.080 ±0.010 0.080 ±0.010
inches
6.25 ±0.25 3.20 ±0.25 1.00 ±0.25 2.02 ±0.25 2.02 ±0.25 mm
0.246 ±0.010 0.126 ±0.010 0.031 ±0.010 0.080 ±0.010 0.080 ±0.010
inches
6.25 ±0.25 3.20 ±0.25 0.79 ±0.25 2.02 ±0.25 2.02 ±0.25 mm
0.246 ±0.010 0.126 ±0.010 0.031 ±0.010 0.074 ±0.010 0.074 ±0.010
inches
6.25 ±0.25 3.20 ±0.25 0.79 ±0.25 1.88 ±0.25 1.88 ±0.25 mm
0.246 ±0.010 0.126 ±0.010 0.031 ±0.010 0.054 ±0.010 0.054 ±0.010
inches
6.25 ±0.25 3.20 ±0.25 0.79 ±0.25 1.37 ±0.25 1.37 ±0.25 mm
0.246 ±0.010 0.126 ±0.010 0.031 ±0.010 0.044 ±0.010 0.044 ±0.010
inches
6.25 ±0.25 3.20 ±0.25 0.79 ±0.25 1.12 ±0.25 1.12 ±0.25 mm
0.246 ±0.010 0.126 ±0.010 0.031 ±0.010 0.074 ±0.010 0.074 ±0.010
inches
6.25 ±0.25 3.20 ±0.25 0.79 ±0.25 1.88 ±0.25 1.88 ±0.25 mm
0.246 ±0.010 0.126 ±0.010 0.031 ±0.010 0.066 ±0.010 0.066 ±0.010
inches
6.25 ±0.25 3.20 ±0.25 0.79 ±0.25 1.68 ±0.25 1.68 ±0.25 mm
0.246 ±0.010 0.126 ±0.010 0.026 ±0.010 0.044 ±0.010 0.044 ±0.010
inches
6.25 ±0.25 3.20 ±0.25 0.65 ±0.25 1.12 ±0.25 1.12 ±0.25 mm
0.246 ±0.010 0.126 ±0.010 0.039 ±0.010 0.044 ±0.010 0.004 ~0.039
inches
6.25 ±0.25 3.20 ±0.25 1.00 ±0.25 1.12 ±0.25 0.10 ~1.00 mm
0.0003
0.0006 - 0.0007
0.003 - 0.0035
0.0041 - 0.01
0.0005
0.00075
0.0008 - 0.0029
0.0036 - 0.004
CSSH2512
3
0.0101 - 0.08
0.001 - 0.003
0.0031 - 0.1
CSS2010
1
CSS2512
2
0.0005 - 0.004
0.0041 - 0.075
0.006 - 0.05
T1
Top
Termination
CSS1206
0.001
H
CSS1206
1
T2
Bottom
Termination
0.002 - 0.004
0.005
Unit
Type / Code
Maximum Power
Rating
(W)
Resistance
Range
(Ω)
L
W
1
Rev Date: 08/07/2020 4 www.seielect.com
This specification may be changed at any time without prior notice marketing@seielect.com
Please confirm technical specifications before you order and/or use.
CSS / CSSH Series
Ultra Precision Metal Alloy Current Sensing Chip Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
Power Derating Curve:
Mechanical Specifications (4527)
Mechanical Specifications (1206 – 2728)
0.268 ±0.010 0.254 ±0.010 0.039 ±0.010 0.085 ±0.010 0.085 ±0.010
inches
6.81 ±0.25 6.45 ±0.25 0.99 ±0.25 2.16 ±0.25 2.16 ±0.25 mm
0.268 ±0.010 0.254 ±0.010 0.043 ±0.010 0.085 ±0.010 0.085 ±0.010
inches
6.81 ±0.25 6.45 ±0.25 1.09 ±0.25 2.16 ±0.25 2.16 ±0.25 mm
0.268 ±0.010 0.254 ±0.010 0.039 ±0.010 0.085 ±0.010 0.085 ±0.010
inches
6.81 ±0.25 6.45 ±0.25 0.99 ±0.25 2.16 ±0.25 2.16 ±0.25 mm
0.268 ±0.010 0.254 ±0.010 0.035 ±0.010 0.071 ±0.010 0.071 ±0.010
inches
6.81 ±0.25 6.45 ±0.25 0.89 ±0.25 1.80 ±0.25 1.80 ±0.25 mm
0.268 ±0.010 0.254 ±0.010 0.035 ±0.010 0.065 ±0.010 0.065 ±0.010
inches
6.81 ±0.25 6.45 ±0.25 0.89 ±0.25 1.65 ±0.25 1.65 ±0.25 mm
0.268 ±0.010 0.254 ±0.010 0.035 ±0.010 0.051 ±0.010 0.051 ±0.010
inches
6.81 ±0.25 6.45 ±0.25 0.89 ±0.25 1.30 ±0.25 1.30 ±0.25 mm
0.264 ±0.010 0.283 ±0.010 0.039 ±0.010 0.045 ±0.010 0.045 ±0.010
inches
6.71 ±0.25 7.19 ±0.25 0.99 ±0.25 1.14 ±0.25 1.14 ±0.25 mm
0.264 ±0.010 0.283 ±0.010 0.039 ±0.010 0.045 ±0.010 0.045 ±0.010
inches
6.71 ±0.25 7.19 ±0.25 0.99 ±0.25 1.14 ±0.25 1.14 ±0.25 mm
Type / Code
Maximum Power
Rating
(W)
Resistance
Range
(Ω)
L
W
H
T1
Top
Termination
T2
Bottom
Termination
Unit
CSSH2728
4
0.004 - 0.1
0.0002, 0.00025,
0.0005
CSS2728
3
0.004 - 0.1
CSS2725
4
0.001
0.0015
0.002
0.0025
0.003
0.450 ± 0.010 0.270 ± 0.010 0.059 ± 0.010 0.038 ± 0.010 0.127 ± 0.010
inches
11.43 ± 0.25 6.85 ± 0.25 1.50 ± 0.25 0.97 ± 0.25 3.22 ± 0.25 mm
0.450 ± 0.010 0.270 ± 0.010 0.059 ± 0.010 0.038 ± 0.010 0.071 ± 0.010
inches
11.43 ± 0.25 6.85 ± 0.25 1.50 ± 0.25 0.97 ± 0.25 1.82 ± 0.25 mm
T2
Bottom
Termination
Unit
CSS4527
5
0.0005 - 0.005
0.0051 - 0.1
Type / Code
Maximum Power
Rating
(W)
Resistance
Range
(Ω)
L
W
H
T1
Top
Termination
0125°C 155°C 170°C 225ºC
Power Load (%)
100
-55ºC
80
60
40
20
70°C 100°C
Ambient Temperature (ºC)
CSS0201
CSSH0805
CSS1206 - 4527
CSSH2512, 2728
CSS0402, 0603, 0805, 0508
-60
250
0
50
100
150
200
Rev Date: 08/07/2020 5 www.seielect.com
This specification may be changed at any time without prior notice marketing@seielect.com
Please confirm technical specifications before you order and/or use.
CSS / CSSH Series
Ultra Precision Metal Alloy Current Sensing Chip Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
Recommended Pad Layouts
0.008 0.013 0.010
inches
0.20 0.33 0.25 mm
0.024 0.024 0.014
inches
0.60 0.60 0.35 mm
0.024 0.024 0.016
inches
0.60 0.60 0.40 mm
0.056 0.036 0.015
inches
1.41 0.92 0.38 mm
0.053 0.036 0.020
inches
1.35 0.92 0.50 mm
0.051 0.036 0.024
inches
1.30 0.92 0.60 mm
0.035 0.091 0.016
inches
0.90 2.30 0.40 mm
0.033 0.091 0.020
inches
0.85 2.30 0.50 mm
0.061 0.057 0.020
inches
1.55 1.44 0.50 mm
0.055 0.057 0.031
inches
1.40 1.44 0.80 mm
0.053 0.071 0.012
inches
1.35 1.80 0.30 mm
0.039 0.071 0.039
inches
1.00 1.80 1.00 mm
0.063 0.086 0.039
inches
1.60 2.18 1.00 mm
0.114 0.115 0.048
inches
2.89 2.92 1.22 mm
0.090 0.115 0.095
inches
2.29 2.92 2.41 mm
0.120 0.145 0.050
inches
3.05 3.68 1.27 mm
0.083 0.145 0.125
inches
2.11 3.68 3.18 mm
0.120 0.145 0.050
inches
3.05 3.68 1.27 mm
0.086 0.145 0.118
inches
2.19 3.68 3.00 mm
0.110 0.145 0.071
inches
2.79 3.68 1.80 mm
0.086 0.145 0.118
inches
2.19 3.68 3.00 mm
0.083 0.145 0.125
inches
2.11 3.68 3.18 mm
CSS2512
2
0.0005 - 0.004
0.0041 - 0.075
CSSH2512
3
0.0003 - 0.0005
0.003 - 0.004
0.0101 - 0.08
0.0006 - 0.0029
0.0041 - 0.01
CSS0201
0.2
0.01, 0.02
CSS2010
1
0.001 - 0.003
0.0031 - 0.1
0.0015, 0.002
0.003 - 0.02
0.33
Type / Code
Maximum Power
Rating (W)
Resistance Range
(Ω)
a
b
i
Unit
CSS0402
CSS0603
0.33
0.0025, 0.003
0.004 - 0.02
0.0025
0.005 - 0.02
1
1
CSS1206
0.002
0.0005
CSS0508
1
0.001, 0.0015, 0.002
0.003 - 0.005
0.001 - 0.05
0.001 - 0.015
CSSH0805
CSS0805
0.5
Rev Date: 08/07/2020 6 www.seielect.com
This specification may be changed at any time without prior notice marketing@seielect.com
Please confirm technical specifications before you order and/or use.
CSS / CSSH Series
Ultra Precision Metal Alloy Current Sensing Chip Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
Performance Characteristics
Recommended Pad Layouts (cont.)
0.125 0.270 0.052
inches
3.18 6.86 1.32 mm
0.108 0.308 0.138
inches
2.75 7.82 3.51 mm
0.108 0.308 0.138
inches
2.75 7.82 3.51 mm
0.189 0.344 0.217
inches
4.80 8.74 5.51 mm
0.134 0.344 0.327
inches
3.40 8.74 8.31 mm
Type / Code
Maximum Power
Rating (W)
Resistance Range
(Ω)
a
b
i
Unit
CSS4527
5
0.0005 - 0.005
0.0051 - 0.12
CSS2728
3
0.004 - 0.1
CSSH2728
4
0.004 - 0.1
CSS2725
4
0.0002 - 0.003
Test Test Method Test Specification Test Condition
R1: resistance of room temperature (T1)
R2: resistance of 125ºC (T2)
The number of rated power are as follows:
Rating power duration: 5 seconds.
Operating Temperature Range for size CSS0201 is -55°C to +125°C.
Applied 500 VAC for 1 minute and limit surge
current 50 mA (max)
Dielectric
Withstanding Voltage
JIS-C-5201-1 4.7
No short or burned in the appearance.
Temperature
Coefficient of
Resistance (TCR)
JIS-C-5201-1 4.8
Put the resistor in the fixture, add 100 VDC in
terminal for 60 seconds then measure the
insulation resistance between electrodes and
insulating enclosure or between electrodes
and base material
≥ 109 Ω
JIS-C-5201-1 4.6
Insulation Resistance
Per specification
(refer to Electrical
Specification table)
JIS C 5201-1 4.13
Short Time Overload
Operating Temperature Range for size CSSH0805 is -55°C to +170°C.
Operating Temperature Range for sizes CSS0402, CSS0603 and CSS0805 is -55°C to +155°C.
Operating Temperature Range for sizes CSS1206 - CSS4527, CSSH 2512 and CSSH 2728 is -55°C to +225°C.
TCR (ppm/ºC)
Size Power (W) Max. R Change
CSS0201 0.2 ≤ ± 0.5
CSS0402 0.33 ± 1% + 0.5mΩ
CSS0603 0.33 ± 1% + 0.5mΩ
CSS0508 1± 1% + 0.5mΩ
CSS0805 0.5 ± 1% + 0.5mΩ
CSSH0805 1≤ ± 1%
CSS1206 1≤ ± 0.5
CSS2010 1≤ ± 0.5
CSS2512 2≤ ± 0.5
CSSH2512 3≤ ± 0.5
CSS2725 4≤ ± 0.5
CSS2728 3≤ ± 0.5
CSSH2728 4≤ ± 0.5
CSS4527 5≤ ± 2%
Size Power (W)
CSS0201 0.2 2.5 times
CSS0402 0.33 2.5 times
CSS0603 0.33 2.5 times
CSS0508 1 2.5 times
CSS0805 0.5 2.5 times
CSSH0805 1 4 times
CSS1206 1 5 times
CSS2010 1 5 times
CSS2512 2 5 times
CSSH2512 3 5 times
CSS2725 4 5 times
CSS2728 3 5 times
CSSH2728 4 5 times
CSS4527 5 5 times
Rated Power
(R2 - R1)
R1 (T2 - T1)
X 106
=
Rev Date: 08/07/2020 7 www.seielect.com
This specification may be changed at any time without prior notice marketing@seielect.com
Please confirm technical specifications before you order and/or use.
CSS / CSSH Series
Ultra Precision Metal Alloy Current Sensing Chip Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
Environmental Performance
Mechanical Performance
Test Item Test Method Test Specifications
Test Condition
0201 - 0805 = ± 1% + 0.5mΩ
CSSH0805 and ≥ 1206 = ± 0.5%
Jumper = < Rmax
≤ ± 0.5%
≤ ± 0.5%
Mechanical Shock JIS C 5202 6.7 ± 1% + 0.5mΩ
a = 50 G, t = 11 ms, 5 times shock
Substrate Bending
JIS C 5201-1 4.33
± 1% + 0.5mΩ
Span between fulcrums: 90 mm
Bend width: 2 mm
260 ± 5°C for 10 ± 1 seconds
JIS C 5201-1 4.18
Resistance to Solder
Heat
The resistor shall be mounted by its terminal leads
to the supporting terminals on the solid table.
The entire frequency range from 10 Hz to 55 Hz
and return to 10 Hz, shall be transferred in 1 minute.
Amplitude: 1.5 mm - This motion shall be applied for
a period of 4 hours in each 3 mutually perpendicular
directions (a total of 12 hours)
No evidence of mechanical damage
JIS C 5201-1 4.22
Vibration
245 ± 5°C for 3 ± 0.5 seconds
Solderability
JIS C 5201-1 4.17
> 95 % coverage
The tested resistor is immersed into isopropyl
alcohol of 20 ~ 25°C for 60 seconds, then the
resistor is left in the room for 48 hours.
JIS C 5201-1 4.29
Resistance to Solvent
No evidence of mechanical damage
Test Item Test Method Test Specifications
Test Condition
0201 - 0805 = ± 1% + 0.5mΩ
≥ 1206 = ± 0.5%
0201 - 0805 = ± 1% + 0.5mΩ 1000 hours at + 155°C ± 2°C
CSSH0805 = ± 1%
≥ 1206 = ± 1%
0201 Jumper: < Rmax 1000 hours at + 125°C ± 2°C
0201 = -55°C to +125°C, 100 cycles
0402 - 0805 = -55°C +155°C, 100 cycles
CSSH0805 = ± 0.5% -55°C to +150°C, 100 cycles
Lowest temperature: -55 +0/-10°C
Highest temperature: 150 + 10/-0°C
0201 - 0805 = ± 2% + 0.5mΩ T = 40 ± 2°C , RH = 90~95%, Load with Rated Current
0201 Jumper = < R max 1.5 hours "ON", 0.5 hours "OFF", 1000 hours
CSSH0805 = ± 0.5%
≥ 1206 = ± 0.5%
1000 hours at -55°C ± 2°C
JIS C 5201-1 4.23.4
Low Temperature
Exposure (Storage)
1000 hours at +85°C / 85% R.H., 10% Bias,
1.5 hours "ON" and 0.5 hours "OFF
JIS C 5201-1 4.24
Bias Humidity
≥ 1206 = ± 0.5%
High Temperature
Exposure (Storage)
JIS C 5201-1 4.23.2
1000 hours at +170°C ± 5°C
0201 - 0805 = ± 1% + 0.5mΩ
JIS C 5201-1 4.19
Temperature Cycling
Rev Date: 08/07/2020 8 www.seielect.com
This specification may be changed at any time without prior notice marketing@seielect.com
Please confirm technical specifications before you order and/or use.
CSS / CSSH Series
Ultra Precision Metal Alloy Current Sensing Chip Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
High Power Chip Resistors and Thermal Management
Stackpole has developed several surface mount resistor series in addition to our current sense resistors, which have had higher power
ratings than standard resistor chips. This has caused some uncertainty and even confusion by users as to how to reliably use these
resistors at the higher power ratings in their designs.
The data sheets for the RHC, RMCP, RNCP, CSR, CSRN, CSRF, CSS, and CSSH state that the rated power assumes an ambient
temperature of no more than 100°C for the CSS / CSSH series and 70°C for all other high power resistor series. In addition, IPC and
UL best practices dictate that the combined temperature on any resistor due to power dissipated and ambient air shall be no more than
105°C. At first glance this wouldn’t seem too difficult, however the graph below shows typical heat rise for the CSR1206 100 milliohm
at full rated power. The heat rise for the RMCP and RNCP would be similar. The RHC with its unique materials, design, and processes
would have less heat rise and therefore would be easier to implement for any given customer.
Environmental Performance (cont.)
Test Item Test Method Test Specifications
Test Condition
Test item (Thermal Shock Test):
Inspection:
0201 - 0805 = ± 2% + 0.5mΩ
0201 Jumper = R max
CSSH0805 = ± 1%
1206 - 2728 = ± 1%
4527 = ± 2%
T = 70 ± 2°C, load with Rated Current 1.5 hours "ON",
0.5 hours "OFF", 1000 hours
JIS C 5201-1 4.25
Load Life
Inspect for whisker formation on specimens that underwent
the acceleration test, with a magnifier (stereo microscope)
of about 40 or higher magnification. If judgement is difficult
with this method, use a scanning electron microscope
(SEM) of about 1000 or higher magnification.
Max 50μm
JESD Standard
No.22A121
class 2
Whisker Test
Minimum Storage Temperature -55 +0 / -10°C
Maximum Storage Temperature 85 + 10 / -0°C
Temperature-Retaining Time 10 minutes
Number of Temperature Cycles 1500
Testing Condition
Rev Date: 08/07/2020 9 www.seielect.com
This specification may be changed at any time without prior notice marketing@seielect.com
Please confirm technical specifications before you order and/or use.
CSS / CSSH Series
Ultra Precision Metal Alloy Current Sensing Chip Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
RoHS Compliance Status
The 102°C heat rise shown here would indicate there will be additional thermal reduction techniques needed to keep this part under
105°C total hot spot temperature if this part is to be used at 0.75 watts of power. However, this same part at the usual power rating for
this size would have a heat rise of around 72°C. This additional heat rise may be dealt with using wider conductor traces, larger solder
pads and land patterns under the solder mask, heavier copper in the conductors, via through PCB, air movement, and heat sinks,
among many other techniques. Because of the variety of methods customers can use to lower the effective heat rise of the circuit,
resistor manufacturers simply specify power ratings with the limitations on ambient air temperature and total hot spot temperatures and
leave the details of how to best accomplish this to the design engineers. Design guidelines for products in various market segments
can vary widely so it would be unnecessarily constraining for a resistor manufacturer to recommend the use of any of these methods
over another.
Note: The final resistance value can be affected by the board layout and assembly process, especially the size of the mounting pads and the amount
of solder used. This is especially notable for resistance values ≤ 50 mΩ.
This should be taken into account when designing.
RoHS Compliance
Stackpole Electronics has joined the worldwide effort to reduce the amount of lead in electronic components and to meet
the various regulatory requirements now prevalent, such as the European Union’s directive regarding “Restrictions on
Hazardous Substances” (RoHS 3). As part of this ongoing program, we periodically update this document with the status
regarding the availability of our compliant components. All our standard part numbers are compliant to EU Directive
2011/65/EU of the European Parliament as amended by Directive (EU) 2015/863/EU as regards the list of restricted
substances.
“Conflict Metals” Commitment
We at Stackpole Electronics, Inc. are joined with our industry in opposing the use of metals mined in the “conflict region”
of the eastern Democratic Republic of the Congo (DRC) in our products. Recognizing that the supply chain for metals
used in the electronics industry is very complex, we work closely with our own suppliers to verify to the extent possible
that the materials and products we supply do not contain metals sourced from this conflict region. As such, we are in
compliance with the requirements of Dodd-Frank Act regarding Conflict Minerals.
Compliance to “REACH”
We certify that all passive components supplied by Stackpole Electronics, Inc. are SVHC (Substances of Very High
Concern) free and compliant with the requirements of EU Directive 1907/2006/EC, “The Registration, Evaluation,
Authorization and Restriction of Chemicals”, otherwise referred to as REACH. Contact us for complete list of REACH
Substance Candidate List.
CSS
Ultra Precision Current Sensing
Chip Resistor
SMD YES 100% Matte Sn over Ni Always Always
CSSH
Ultra Precision Current Sensing
Chip Resistor (High Power)
SMD YES 100% Matte Sn over Ni Always Always
Standard
Product
Series
Description
Package /
Termination
Type
Standard
Series
RoHS
Compliant
Lead-Free Termination
Composition
Lead-Free
Mfg. Effective Date
(Std Product Series)
Lead-Free
Effective Date
Code
(YY/WW)
Rev Date: 08/07/2020 10 www.seielect.com
This specification may be changed at any time without prior notice marketing@seielect.com
Please confirm technical specifications before you order and/or use.
CSS / CSSH Series
Ultra Precision Metal Alloy Current Sensing Chip Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
Environmental Policy
It is the policy of Stackpole Electronics, Inc. (SEI) to protect the environment in all localities in which we operate. We
continually strive to improve our effect on the environment. We observe all applicable laws and regulations regarding the
protection of our environment and all requests related to the environment to which we have agreed. We are committed
to the prevention of all forms of pollution.
How to Order
1 2 3 4 5 6 7 8 9 10 11 12 13
C S S 2 7 2 5 F T 3 L 0 0
Resistance Value
Code Description Size W Code Tol Code Description Size Quantity
CSS Metal Alloy 0201 0.2 D 0.5% 0201, 0402 10000
CSSH High Power 0402 0.33 F 1% 0603, 0508
0603
0.33 G 2% 0805, (H)0805
0508
1 J 5% 1206 4000
0805
0.5 2010, 2512
(H)0805
1 (H)2512 0.00025 ohm = L250
1206
1 2725, 2728 0.004 ohm = 4L00
2010
1 (H)2728 0.05 ohm = 50L0
2512
24527 500 0.12 ohm = R120
(H)2512
3
2725
4
2728
3
(H)2728
4
4527
5
Packaging
Product Series
Size
Tolerance
2000
1000
T
7" Reel - Plastic
Tape
Four characters with the
multiplier used as the
decimal holder.
"L" used as multiplier
of 10-3 for any value under
0.1 ohm.
5000