CSS(H) Series Datasheet

Stackpole Electronics Inc.

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Datasheet

Rev Date: 01/28/2019 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 Current Sensing Chip Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
Features:
Please refer to the High Power Resistor Application Note (page 5) for more information on designing and implementing high power
resistor types.
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
Electrical Specifications - CSS
Electrical Specifications CSSH (High Power)
0.5% 1%, 2%, 5%
±50 ppm/ºC - 0.0005 - 0.0025
±25 ppm/ºC 0.007 - 0.01 0.003 - 0.01
±50 ppm/ºC 0.0101 - 0.05 0.0101 - 0.08
±25 ppm/ºC 0.004 - 0.007 0.004 - 0.007
±15 ppm/ºC 0.008 - 0.019 0.008 - 0.05
Type / Code
Maximum Power
Rating (Watts)
TCR (ppm°C)
Ohmic Range () and Tolerance
CSSH2728
4
CSSH2512
3
0.5% 1%, 2%, 5%
9.08 18.16 ±75ppm/ºC - 0.004
8.1 16.2 ±50 ppmC - 0.005, 0.01, 0.015
12.9 25.8 ±75ppmC - 0.003
12.9 25.8 ±50 ppmC - 0.005, 0.01, 0.015
±50 ppmC - 0.001 - 0.004
±25 ppmC 0.007 - 0.015 0.005 - 0.015
±15 ppmC 0.016 - 0.05 0.016 - 0.05
±50 ppmC - 0.001 - 0.003
±25 ppmC - 0.004 - 0.006
±15 ppmC 0.007 - 0.1 0.007 - 0.1
±50 ppmC - 0.0005 - 0.003
±25 ppmC - 0.004 - 0.006
±15 ppmC 0.007 - 0.075 0.007 - 0.075
±100 ppmC - 0.0002
±50 ppmC - 0.00025 - 0.003
±25 ppmC 0.004 -0.007 0.004 - 0.007
±15 ppmC 0.008 - 0.19 0.008 - 0.1
CSS4527 5100 173 ±50 ppmC 0.007 - 0.12 0.0005 - 0.12
2
CSS2728
CSS2512
1
3
CSS2010
CSS2725
4
TCR (ppm/°C)
Type / Code
Maximum Power
Rating (Watts)
CSS1206
1
CSS0603
0.33
CSS0805
0.5
Ohmic Range () and Tolerance
Rev Date: 01/28/2019 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 Current Sensing Chip Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
Mechanical Specifications
0.063 ± 0.008 0.031 ± 0.008 0.010 ± 0.004 0.012 ± 0.006
inches
1.60 ± 0.20 0.80 ± 0.20 0.25 ± 0.10 0.30 ± 0.15 mm
H
0.004, 0.005
0.01, 0.015
Unit
Type / Code
Maximum Power
Rating (Watts)
Resistance Range
(Ω)
L
W
T1
Bottom Termination
CSS0603
0.33
0.080 ± 0.008 0.050 ± 0.008 0.012 ± 0.004 0.014 ± 0.008 0.008 ± 0.006
inches
2.03 ± 0.20 1.27 ± 0.20 0.30 ± 0.10 0.35 ± 0.20 0.20 ± 0.15 mm
CSS0805
0.5
0.003, 0.005
0.01, 0.015
Type / Code
Maximum Power
Rating (Watts)
Resistance Range
(Ω)
L
W
H
T1
Bottom Termination
T2
Top Termination
Unit
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 0.031 ±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 0.044 ±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
T2
Top Termination
Unit
Type / Code
Maximum Power
Rating (Watts)
Resistance Range
(Ω)
L
W
CSS1206
0.001
H
T1
Bottom Termination
1
CSS1206
0.002 - 0.004
CSS1206
0.005
CSS1206
0.006 - 0.05
0.001 - 0.003
0.0031 - 0.1
CSS2010
1
CSS2512
2
0.0005 - 0.004
0.0041 - 0.075
0.003
0.0031 - 0.004
CSSH2512
3
0.0041 - 0.01
0.0005
0.0006 - 0.0029
Rev Date: 01/28/2019 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 Current Sensing Chip Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
Recommended Pad Layouts
Mechanical Specifications (cont.)
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
CSS2725
4
0.00025, 0.0005
0.001
0.0015
0.002
0.0025
0.003
CSS2728
3
0.004 - 0.1
CSSH2728
4
0.004 - 0.1
H
T1
Bottom Termination
T2
Top Termination
Unit
Type / Code
Maximum Power
Rating (Watts)
Resistance Range
(Ω)
L
W
0.450 ± 0.010 0.270 ± 0.010 0.059 ± 0.010 0.127 ± 0.010 0.038 ± 0.010
inches
11.43 ± 0.25 6.85 ± 0.25 1.50 ± 0.25 3.22 ± 0.25 0.97 ± 0.25 mm
0.450 ± 0.010 0.270 ± 0.010 0.059 ± 0.010 0.071 ± 0.010 0.038 ± 0.010
inches
11.43 ± 0.25 6.85 ± 0.25 1.50 ± 0.25 1.82 ± 0.25 0.97 ± 0.25 mm
T1
Bottom Termination
T2
Top Termination
Unit
CSS4527
5
0.0005 - 0.005
0.0051 - 0.1
Type / Code
Maximum Power
Rating (Watts)
Resistance Range
(Ω)
L
W
H
0.039 0.050 0.020
inches
1.00 1.27 0.50 mm
0.071 0.086 0.026
inches
1.80 2.18 0.66 mm
0.063 0.086 0.039
inches
1.60 2.18 1.00 mm
0.5
0.005, 0.01, 0.015
CSS1206
1
0.001 - 0.05
Type / Code
Maximum Power Rating (Watts)
Resistance Range ()
a
b
i
Unit
CSS0603
0.33
0.005, 0.01, 0.015
CSS0805
Rev Date: 01/28/2019 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 Current Sensing Chip Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
Power Derating Curve:
Recommended Pad Layouts
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
0.0006 - 0.0029 0.086 0.145 0.118 inches
0.0041 - 0.01 2.19 3.68 3.00 mm
0.110 0.145 0.071
inches
2.79 3.68 1.80 mm
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
CSS4527
5
0.0005 - 0.005
0.0051 - 0.12
CSS2728
3
0.004 - 0.1
CSSH2728
4
0.004 - 0.1
CSS2512
2
0.0005 - 0.004
0.0041 - 0.075
0.00025 - 0.003
CSS2725
4
CSSH2512
3
0.0005
0.003 - 0.004
Type / Code
Maximum Power Rating (Watts)
Resistance Range ()
CSS2010
1
0.001 - 0.003
0.0031 - 0.1
a
b
i
Unit
0150°C 225ºC
-60
250
Ambient Temperature (ºC)
0
50
100
150
200
All other sizes
CSS0603, CSS0805
Power Load (%)
100
-55ºC
80
60
40
20
70°C 100°C
Rev Date: 01/28/2019 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 Current Sensing Chip Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
Performance Characteristics
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.
Test Test Method Test Specification Test Condition
R1: resistance of room temperature (T1)
R2: resistance of 150ºC (T2)
T1: room temperature
T2: temperature at 150°C
The number of rated power are as follows:
CSS0603-0.33W: 4 times rated power
CSS0805-0.5W: 4 times rated power
CSS1206-1W: 4 times rated power
CSS2010-1W: 4 times rated power
CSS2512-2W: 5 times rated power
CSSH2512-3W: 3 times rated power
CSS2725-4W: 4 times rated power
CSS2728-3W: 3 times rated power
CSSH2728-4W: 4 times rated power
(R/R1) ±2% CSS4527-5W: 3 times rated power
Insulation Resistance JIS-C-5201-1 4.6 ≥109Ω100±15V DC for 1 minute
Operating Temperature Range for all other sizes: -55C to +225°C. Contact factory for operation at higher temperatures.
TCR (ppm/ºC)
Operating Temperature Range for sizes 0603 and 0805: -55C to +150°C. Contact factory for operation at higher temperatures.
Applied 500V AC for 1 minute and
limit surge current 50mA (max)
Dielectric Withstanding Voltage
Short Time Overload
(rating power duration = 5 seconds)
JIS-C-5201-1 4.13
JIS-C-5201-1 4.7
Without break down
(R/R1) ≤ ±0.5%
Temperature Coefficient of Resistance
(TCR)
JIS-C-5201-1 4.8
Per specification
(refer to Electrical
Specification table)
(R2-R1)
R1 (T2-T1)
X 106
=
Rev Date: 01/28/2019 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 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 ≤ 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.
“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.
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
Standard
Series
RoHS
Compliant
Package /
Termination
Type
Description
Lead-Free
Effective Date
Code
(YY/WW)
Lead-Free
Mfg. Effective Date
(Std Product Series)
Lead-Free Termination
Composition
Rev Date: 01/28/2019 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 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
C S S 2 7 2 5 F T 3 L 0 0
Code Size Code Tol Code Quantity
CSS 0603 D 0.5% 5,000
CSSH 0805 F1% 4,000
1206 G2%
2010 J5%
2512
(H)2512
2725
500
2728
(H)2728
4527
Packaging
0.05 ohm = 50L0
Tolerance
Description
Size
Resistance Value
Product Series
1W
2010, 2512
2W
(H)2512
3W
0.00025 ohm = L250
Metal Alloy
0.12 ohm = R120
0.004 ohm = 4L00
3W
4527
Four characters with
the multiplier used as
the decimal holder.
"L" used as multiplier
of 10-3 for any value
under 0.1 ohm.
0.33W
0.5W
0603, 0805
T
7" Reel - Plastic Tape
(H)2728
1W
1206
5W
2,000
1,000
2725, 2728
Description
Power
Size
4W
High Power
4W

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