CSS4527 (Stackpole)
Ultra Precision Current Sensing Chip Resistor

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CSS/CSSH Series
Ultra Precision 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 factory
Low thermal EMF (<1µV/C)
Proprietary processing technique produces extremely low resistance values
Qualified to AEC-Q200
RoHS compliant, lead-free and halogen-free
Type / Code
CSS0603
CSS0805
CSS1206
CSS2010
CSS2512
CSS2725
CSS2728
CSS4527
Maximum Power
Rating (Watts)
0.33
0.5
1
1
2
4
3
5
Electrical Specifications - CSS
Maximum Rating
Current (A)
Maximum Overload
Current (A)
TCR (ppm/°C)
9.08
8.1
12.9
12.9
31.62
31.62
63.25
126.49
27.39
100
18.16
16.2
25.8
25.8
63.25
63.25
141.42
316.23
61.24
173
±75ppm/ºC
±50 ppm/ºC
±75ppm/ºC
±50 ppm/ºC
±50 ppm/ºC
±25 ppm/ºC
±15 ppm/ºC
±50 ppm/ºC
±25 ppm/ºC
±15 ppm/ºC
±50 ppm/ºC
±25 ppm/ºC
±15 ppm/ºC
±100 ppm/ºC
±50 ppm/ºC
±25 ppm/ºC
±15 ppm/ºC
±50 ppm/ºC
Ohmic Range () and Tolerance
0.5%
-
-
-
-
-
0.007 - 0.015
0.016 - 0.05
-
-
0.007 - 0.1
-
-
0.007 - 0.075
-
-
0.004 -0.007
0.008 - 0.19
0.007 - 0.12
1%, 2%, 5%
0.004
0.005, 0.01, 0.015
0.003
0.005, 0.01, 0.015
0.001 - 0.004
0.005 - 0.015
0.016 - 0.05
0.001 - 0.003
0.004 - 0.006
0.007 - 0.1
0.0005 - 0.003
0.004 - 0.006
0.007 - 0.075
0.0002
0.00025 - 0.003
0.004 - 0.007
0.008 - 0.1
0.0005 - 0.12
Type / Code
CSSH2512
CSSH2728
Maximum Power
Rating (Watts)
3
4
Electrical Specifications CSSH (High Power)
Maximum Rating
Current (A)
77.46
31.62
Maximum Overload
Current (A)
134.16
70.71
TCR (ppm°C)
±150 ppm/ºC
±50 ppm/ºC
±25 ppm/ºC
±50 ppm/ºC
±25 ppm/ºC
±15 ppm/ºC
Ohmic Range () and Tolerance
0.5%
-
-
0.007 - 0.01
0.0101 - 0.05
0.004 - 0.007
0.008 - 0.019
1%, 2%, 5%
0.0003
0.0005 - 0.0025
0.003 - 0.01
0.0101 - 0.08
0.004 - 0.007
0.008 - 0.05
Please refer to the High Power Resistor Application Note (page 8) for more information on designing and implementing high power
resistor types.
Rev Date: 07/01/2019
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
1
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CSS4527 (Stackpole)
Ultra Precision Current Sensing Chip Resistor

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CSS/CSSH Series
Ultra Precision Current Sensing Chip Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
Mechanical Specifications
Type / Code
CSS0603
Maximum Power
Rating (Watts)
0.33
Resistance Range
(Ω)
0.004, 0.005
0.01, 0.015
L
0.063 ± 0.008
1.60 ± 0.20
W
0.031 ± 0.008
0.80 ± 0.20
H
0.010 ± 0.004
0.25 ± 0.10
T1
Bottom Termination
0.012 ± 0.006
0.30 ± 0.15
Unit
inches
mm
Type / Code
CSS0805
Maximum Power
Rating (Watts)
0.5
Resistance Range
(Ω)
0.003, 0.005
0.01, 0.015
L
0.080 ± 0.008
2.03 ± 0.20
W
0.050 ± 0.008
1.27 ± 0.20
H
0.012 ± 0.004
0.30 ± 0.10
T1
Bottom Termination
0.014 ± 0.008
0.35 ± 0.20
T2
Top Termination
0.008 ± 0.006
0.20 ± 0.15
Unit
inches
mm
Type / Code
CSS1206
Maximum Power
Rating (Watts)
Resistance Range
(Ω)
0.001
CSS1206
CSS1206
1
0.002 - 0.004
0.005
CSS1206
0.006 - 0.05
CSS2010
1
0.001 - 0.003
0.0031 - 0.1
CSS2512
2
CSSH2512
3
0.0005 - 0.004
0.0041 - 0.075
0.0005
0.0006 - 0.0029
0.003
0.0031 - 0.004
0.0041 - 0.01
L
0.126 ± 0.010
3.20 ± 0.25
0.126 ± 0.010
3.20 ± 0.25
0.126 ± 0.010
3.20 ± 0.25
0.126 ± 0.010
3.20 ± 0.25
0.200 ± 0.010
5.08 ± 0.25
0.200 ± 0.010
5.08 ± 0.25
0.246 ± 0.010
6.25 ± 0.25
0.246 ± 0.010
6.25 ± 0.25
0.246 ± 0.010
6.25 ± 0.25
0.246 ± 0.010
6.25 ± 0.25
0.246 ± 0.010
6.25 ± 0.25
0.246 ± 0.010
6.25 ± 0.25
0.246 ± 0.010
6.25 ± 0.25
W
0.063 ± 0.010
1.60 ± 0.25
0.063 ± 0.010
1.60 ± 0.25
0.063 ± 0.010
1.60 ± 0.25
0.063 ± 0.010
1.60 ± 0.25
0.100 ± 0.010
2.54 ± 0.25
0.100 ± 0.010
2.54 ± 0.25
0.126 ± 0.010
3.20 ± 0.25
0.126 ± 0.010
3.20 ± 0.25
0.126 ± 0.010
3.20 ± 0.25
0.126 ± 0.010
3.20 ± 0.25
0.126 ± 0.010
3.20 ± 0.25
0.126 ± 0.010
3.20 ± 0.25
0.126 ± 0.010
3.20 ± 0.25
H
0.025 ± 0.010
0.65 ± 0.25
0.022 ± 0.010
0.55 ± 0.25
0.022 ± 0.010
0.55 ± 0.25
0.022 ± 0.010
0.55 ± 0.25
0.031 ± 0.010
0.79 ± 0.25
0.025 ± 0.010
0.65 ± 0.25
0.031 ± 0.010
0.79 ± 0.25
0.025 ± 0.010
0.65 ± 0.25
0.031 ± 0.010
0.79 ± 0.25
0.031 ± 0.010
0.79 ± 0.25
0.031 ± 0.010
0.79 ± 0.25
0.031 ± 0.010
0.79 ± 0.25
0.026 ± 0.010
0.65 ± 0.25
T1
Bottom Termination
0.020 ± 0.010
0.51 ± 0.25
0.020 ± 0.010
0.51 ± 0.25
0.024 ± 0.010
0.60 ± 0.25
0.020 ± 0.010
0.51 ± 0.25
0.051 ± 0.010
1.30 ± 0.25
0.031 ± 0.010
0.79 ± 0.25
0.074 ± 0.010
1.88 ± 0.25
0.044 ± 0.010
1.12 ± 0.25
0.074 ± 0.010
1.88 ± 0.25
0.044 ± 0.010
1.12 ± 0.25
0.074 ± 0.010
1.88 ± 0.25
0.066 ± 0.010
1.68 ± 0.25
0.044 ± 0.010
1.12 ± 0.25
T2
Top Termination
0.020 ± 0.010
0.51 ± 0.25
0.020 ± 0.010
0.51 ± 0.25
0.024 ± 0.010
0.60 ± 0.25
0.020 ± 0.010
0.51 ± 0.25
0.051 ± 0.010
1.30 ± 0.25
0.031 ± 0.010
0.79 ± 0.25
0.074 ± 0.010
1.88 ± 0.25
0.044 ± 0.010
1.12 ± 0.25
0.074 ± 0.010
1.88 ± 0.25
0.044 ± 0.010
1.12 ± 0.25
0.074 ± 0.010
1.88 ± 0.25
0.066 ± 0.010
1.68 ± 0.25
0.044 ± 0.010
1.12 ± 0.25
Unit
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
Rev Date: 07/01/2019
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
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CSS4527 (Stackpole)
Ultra Precision Current Sensing Chip Resistor

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CSS/CSSH Series
Ultra Precision Current Sensing Chip Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
Mechanical Specifications (cont.)
Type / Code
Maximum Power
Rating (Watts)
CSS2725
4
CSS2728
CSSH2728
3
4
Resistance Range
(Ω)
0.00025, 0.0005
0.001
0.0015
0.002
0.0025
0.003
0.004 - 0.1
0.004 - 0.1
L
0.268 ± 0.010
6.81 ± 0.25
0.268 ± 0.010
6.81 ± 0.25
0.268 ± 0.010
6.81 ± 0.25
0.268 ± 0.010
6.81 ± 0.25
0.268 ± 0.010
6.81 ± 0.25
0.268 ± 0.010
6.81 ± 0.25
0.264 ± 0.010
6.71 ± 0.25
0.264 ± 0.010
6.71 ± 0.25
W
0.254 ± 0.010
6.45 ± 0.25
0.254 ± 0.010
6.45 ± 0.25
0.254 ± 0.010
6.45 ± 0.25
0.254 ± 0.010
6.45 ± 0.25
0.254 ± 0.010
6.45 ± 0.25
0.254 ± 0.010
6.45 ± 0.25
0.283 ± 0.010
7.19 ± 0.25
0.283 ± 0.010
7.19 ± 0.25
H
0.039 ± 0.010
0.99 ± 0.25
0.043 ± 0.010
1.09 ± 0.25
0.039 ± 0.010
0.99 ± 0.25
0.035 ± 0.010
0.89 ± 0.25
0.035 ± 0.010
0.89 ± 0.25
0.035 ± 0.010
0.89 ± 0.25
0.039 ± 0.010
0.99 ± 0.25
0.039 ± 0.010
0.99 ± 0.25
T1
Bottom Termination
0.085 ± 0.010
2.16 ± 0.25
0.085 ± 0.010
2.16 ± 0.25
0.085 ± 0.010
2.16 ± 0.25
0.071 ± 0.010
1.80 ± 0.25
0.065 ± 0.010
1.65 ± 0.25
0.051 ± 0.010
1.30 ± 0.25
0.045 ± 0.010
1.14 ± 0.25
0.045 ± 0.010
1.14 ± 0.25
T2
Top Termination
0.085 ± 0.010
2.16 ± 0.25
0.085 ± 0.010
2.16 ± 0.25
0.085 ± 0.010
2.16 ± 0.25
0.071 ± 0.010
1.80 ± 0.25
0.065 ± 0.010
1.65 ± 0.25
0.051 ± 0.010
1.30 ± 0.25
0.045 ± 0.010
1.14 ± 0.25
0.045 ± 0.010
1.14 ± 0.25
Unit
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
Type / Code
CSS4527
Maximum Power
Rating (Watts)
5
Resistance Range
(Ω)
0.0005 - 0.005
0.0051 - 0.1
L
0.450 ± 0.010
11.43 ± 0.25
0.450 ± 0.010
11.43 ± 0.25
W
0.270 ± 0.010
6.85 ± 0.25
0.270 ± 0.010
6.85 ± 0.25
H
0.059 ± 0.010
1.50 ± 0.25
0.059 ± 0.010
1.50 ± 0.25
T1
Bottom Termination
0.127 ± 0.010
3.22 ± 0.25
0.071 ± 0.010
1.82 ± 0.25
T2
Top Termination
0.038 ± 0.010
0.97 ± 0.25
0.038 ± 0.010
0.97 ± 0.25
Unit
inches
mm
inches
mm
Recommended Pad Layouts
Type / Code
CSS0603
CSS0805
CSS1206
Maximum Power Rating (Watts)
0.33
0.5
1
Resistance Range ()
0.005, 0.01, 0.015
0.005, 0.01, 0.015
0.001 - 0.05
a
0.039
1.00
0.071
1.80
0.063
1.60
b
0.050
1.27
0.086
2.18
0.086
2.18
i
0.020
0.50
0.026
0.66
0.039
1.00
Unit
inches
mm
inches
mm
inches
mm
Rev Date: 07/01/2019
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
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CSS4527 (Stackpole)
Ultra Precision Current Sensing Chip Resistor

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CSS/CSSH Series
Ultra Precision Current Sensing Chip Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
Recommended Pad Layouts
Type / Code
CSS2010
CSS2512
CSSH2512
CSS2725
CSS2728
CSSH2728
CSS4527
Maximum Power Rating (Watts)
1
2
3
4
3
4
5
Resistance Range ()
0.001 - 0.003
0.0031 - 0.1
0.0005 - 0.004
0.0041 - 0.075
0.0005
0.0006 - 0.0029
0.0041 - 0.01
0.003 - 0.004
0.00025 - 0.003
0.004 - 0.1
0.004 - 0.1
0.0005 - 0.005
0.0051 - 0.12
a
0.114
2.89
0.090
2.29
0.120
3.05
0.083
2.11
0.120
3.05
0.086
2.19
0.110
2.79
0.125
3.18
0.108
2.75
0.108
2.75
0.189
4.80
0.134
3.40
b
0.115
2.92
0.115
2.92
0.145
3.68
0.145
3.68
0.145
3.68
0.145
3.68
0.145
3.68
0.270
6.86
0.308
7.82
0.308
7.82
0.344
8.74
0.344
8.74
i
0.048
1.22
0.095
2.41
0.050
1.27
0.125
3.18
0.050
1.27
0.118
3.00
0.071
1.80
0.052
1.32
0.138
3.51
0.138
3.51
0.217
5.51
0.327
8.31
Unit
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
Power Derating Curve:
-55ºC
100
80
60
40
20
0
-60
0
70°C 100°C
150°C
50 100 150
Ambient Temperature (ºC)
225ºC
200 250
CSS0603, CSS0805
All other sizes
Rev Date: 07/01/2019
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
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CSS4527 (Stackpole)
Ultra Precision Current Sensing Chip Resistor

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CSS/CSSH Series
Ultra Precision Current Sensing Chip Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
Performance Characteristics
Test
Test Method
Test Specification
Test Condition
Temperature Coefficient of
Resistance (TCR)
JIS-C-5201-1 4.8
Short Time Overload
JIS-C-5201-1 4.13
Per specification
(refer to Electrical
Specification table)
≤ ±0.5%
≤ ±2% (4527)
TCR (ppm/ºC) =
(R2-R1)
X 106
R1 (T2-T1)
R1: resistance of room temperature (T1)
R2: resistance of 150ºC (T2)
T1: room temperature
T2: temperature at 150°C
Applied overload for 5 seconds and release the
load for about 30 minutes, then measure its
resistance variance rate.
Size Power (W) Rated Power
CSS0603
CSS0805
0.33
0.5
4 times
CSS1206
1
CSS2010
1
CSS2512
2
CSSH2512
CSS2725
3
4
5 times
CSS2728
3
CSSH2728
4
CSS4527
5
Insulation Resistance
JIS-C-5201-1 4.6
≥109Ω
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
Dielectric Withstanding Voltage
JIS-C-5201-1 4.7
No short or burned in the
appearance.
Applied 500 VAC for 1 minute and
limit surge current 50 mA (max)
Operating Temperature Range for sizes 0603 and 0805: -55C to +150°C. Contact factory for operation at higher temperatures.
Operating Temperature Range for all other sizes: -55C to +225°C. Contact factory for operation at higher temperatures.
Test Item
Resistance to Solder Heat
Solderability
Core Body Strength
Mechanical Performance
Test Method
Test Specifications
≤ ±0.5%
JIS C 5201-1 4.18
No evidence of mechanical
damage
JIS C 5201-1 4.17
JIS C 5201-1 4.15
Solder coverage over 95%
≤± 0.5%
No evidence of mechanical
damage
Test Condition
The tested resistor is immersed 25 mm/sec into
molten solder of 260±5°C for 10±1 seconds. Then
the resistor is left in the room for 1 hour and
measured its resistance variance rate.
Add flux into tested resistors, immerse into solder
bath in temperature 245±5°C for 3±0.5 seconds.
Apply R0.5 test probe at its central part then
push 5N force on the sample for 10 seconds.
Rev Date: 07/01/2019
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
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CSS4527 (Stackpole)
Ultra Precision Current Sensing Chip Resistor

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CSS/CSSH Series
Ultra Precision Current Sensing Chip Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
Test Item
Mechanical Performance (cont.)
Test Method
JIS C 5201-1 4.32
Test Specifications
Test item 1:
1. ≤ ±0.5%
2. No evidence of mechanical
damage
No peeling off.
Test Condition
Preconditioning:
Put tested resistor in the apparatus of PCT, at a
temperature of 105 °C, humidity of 100% R.H., and
pressure of 1.22 x 105 Pa for a duration of 4 hours.
Then leave the specimen in a temperature for 2
hours or more.
Test Item 1 (Adhesion):
A static load using a R0.5 scratch tool shall be
applied on the core of the component and in the
direction of the arrow and held for 10 seconds and
under load measured its resistance variance rate.
Load: 17:7N
Joint Strength of Solder
JIS C 5201-1 4.33
Test item 2:
1. ≤ ±0.5%
2. No evidence of mechanical
damage
No terminal peeling off and no
core body cracked.
Test item 2 (Bending Strength):
Solder tested resistor on to PC board, add force in
the middle down, and under load measured its
resistance variance rate.
D: 2mm
Resistance to Solvent
Vibration
JIS C 5201-1 4.29
JIS C 5201-1 4.22
≤ ±0.5%
No evidence of mechanical
damage
≤ ±0.5%
No evidence of mechanical
damage
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.
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: 1.5mm This motion shall be applied for
a period of 4 hours in each 3 mutually perpendicular
directions (a total of 12 hours)
Rev Date: 07/01/2019
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
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CSS4527 (Stackpole)
Ultra Precision Current Sensing Chip Resistor

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CSS/CSSH Series
Ultra Precision Current Sensing Chip Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
Test Item
Low Temperature Exposure
(Storage)
High Temperature Exposure
(Storage)
Temperature Cycling
(Rapid Temperature Change)
Moisture Resistance
(Climatic Sequence)
Figure 1:
Environmental Performance
Test Method
Test Specifications
≤ ± 0.5%
JIS C 5201-1 4.23.4
No evidence of mechanical
damage.
≤ ± 1%
JIS C 5201-1 4.23.2
No evidence of mechanical
damage.
≤ ± 0.5%
JESD 22-A 104
No evidence of mechanical
damage.
Test Condition
Put tested resistor in chamber under temperature
-55 ± 2 °C for 1,000 hours. then leave the tested
resistor in room temperature for 60 minutes and
measure its resistance variance rate.
Put tested resistor in chamber under temperature
170 ± 5 °C for 1,000 hours. Then leave the tested
resistor in room temperature for 60 minutes and
measure its resistance variance rate.
Put tested resistor in chamber under the temperature
cycling which is shown in the following table. It shall
be repeated 1,000 times consecutively. Then leave
the tested resistor in room temperature for 60
minutes and measure its resistance variance rate.
Test Item
Lowest temperature
Highest temperature
Dwell time
Test Condition
-55 +0/-10 °C
150 + 10/-0 °C
30 minutes max.
MIL-STD 202 Method 106
≤ ± 0.5%
No evidence of mechanical
damage.
Put tested resistor in chamber and subject to
10 cycles of damp heat and without power.
Each one of which consists of the steps 1 to 7
(Figure 1). Then leave the tested resistor in room
temperature for 24 hours and measure
its resistance variance rate.
Bias Humidity
JIS C 5201-1 4.24
≤ ± 0.5%
No evidence of mechanical
damage.
Put tested resistor in chamber under 85 ± 5 °C and
85 ± 5% R.H. with 10% bias and load the rated
current for 90 minutes "ON" and 30 minutes "OFF"
total 1,000 hours. Then leave the tested resistor in
room temperature for 60 minutes, and measure its
resistance variance rate.
Rev Date: 07/01/2019
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
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CSS4527 (Stackpole)
Ultra Precision Current Sensing Chip Resistor

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CSS/CSSH Series
Ultra Precision Current Sensing Chip Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
Test Item
Whisker Test
Load Life
Environmental Performance (cont.)
Test Method
JESD Standard No.22A121
class 2
JIS C 5201-1 4.25
Test Specifications
Max 50 μm
≤ ± 1%
≤ ± 2% (4527 size)
No evidence of mechanical
damage.
Test Condition
Test item (Thermal Shock Test):
Testing Condition
Minimum Storage Temperature
Maximum Storage Temperature
Temperature-Retaining Time
Number of Temperature Cycles
-55 +0/-10 °C
85 + 10/-0 °C
10 minutes
1,500
Inspection:
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 1,000 or higher magnification.
Put the tested resistor in chamber under temperature
70 ± 2 °C and load the rated current for 90 minutes
"ON", and 30 minutes "OFF", for a total of 1,000
hours. Then leave the tested resistor in room
temperature for 60 minutes and measure its
resistance variance rate.
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 CSR ½ 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.
Rev Date: 07/01/2019
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
8
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CSS4527 (Stackpole)
Ultra Precision Current Sensing Chip Resistor

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CSS/CSSH Series
Ultra Precision Current Sensing Chip Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
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 ≤ 50mΩ.
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.
Standard
Product
Series
Description
RoHS Compliance Status
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)
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
“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.
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.
Rev Date: 07/01/2019
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
9
www.seielect.com
marketing@seielect.com


CSS4527 (Stackpole)
Ultra Precision Current Sensing Chip Resistor

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CSS/CSSH Series
Ultra Precision Current Sensing Chip Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
How to Order
1 2 3 4 5 6 7 8 9 10 11 12 13
CSS2 7 2 5FT 3L 0 0
Product Series
Code
Description
CSS
Metal Alloy
CSSH High Power
Size
Size Power
0603 0.33W
0805 0.5W
1206
1W
2010
1W
2512
2W
(H)2512 3W
2725
4W
2728
3W
(H)2728 4W
4527
5W
Tolerance
Code Tol
D 0.5%
F 1%
G 2%
J 5%
Code
T
Packaging
Description
Size
0603, 0805
1206
2010, 2512
7" Reel - Plastic Tape
(H)2512
2725, 2728
(H)2728
4527
Quantity
5,000
4,000
2,000
1,000
500
Resistance Value
Four characters with
the multiplier used as
the decimal holder.
"L" used as multiplier
of 10-3 for any value
under 0.1 ohm.
0.00025 ohm = L250
0.004 ohm = 4L00
0.05 ohm = 50L0
0.12 ohm = R120
Rev Date: 07/01/2019
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
10
www.seielect.com
marketing@seielect.com




CSS4527.pdf
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