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CSR/CSRN Series
Thick Film Current Sensing Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
CSR0402 1/8S 0.125W 200V ±200 ppm/ºC 0.051 - 1 0.051 - 1
CSR0603 1/8 0.125W 200V ±300 ppm/ºC 0.02 - 1 0.02 - 1
CSR0805 1/4 0.25W 200V ±200 ppm/ºC 0.02 - 1 0.02 - 1
CSR1206 1/2 0.5W 200V ±100 ppm/ºC (1) 0.01 - 1 0.01 - 1
±600 ppm/ºC 0.01 - 0.02 0.01 - 0.02
±400 ppm/ºC 0.021 - 0.05 0.021 - 0.05
±300 ppm/ºC 0.051 - 0.099 0.051 - 0.099
±200 ppm/ºC 0.1 - 1 0.1 - 1
±300 ppm/ºC 0.01 - 0.019 0.01 - 0.019
±150 ppm/ºC 0.02 - 0.5 0.02 - 0.5
±300 ppm/ºC 0.001 - 0.004
±200 ppm/ºC 0.005 - 0.01 0.005 - 0.01
±150 ppm/ºC 0.011 - 0.35 0.011 - 0.35
CSR2010 1 1W 200V ±100 ppm/ºC (1) 0.01 - 1 0.01 - 1
CSRN2010 1 1W 200V ±250 ppm/ºC 0.01 - 1 0.01 - 1
CSR2512 2 2W 200V ±200 ppm/ºC 0.01 - 1 0.01 - 1
CSRN2512 2 2W 200V ±200 ppm/ºC 0.01 - 1 0.01 - 1
±200 ppm/ºc 0.003 - 0.02 0.003 - 0.02
±100 ppm/ºC 0.021 - 8 0.021 - 8
2%, 5%
Ohmic Range (Ω) and Tolerance
-
CSR1210 - 0.5W 200V
200V
CSRN0815
3 3W 200V
1%
1S 1W 200V
(1) Contact Factory for TCR below 50mOhm
Resistance
Temperature
Coefficient
Power Rating
(Watts) @ 70ºC
Type / Code Old Pkg
Code
Dielectric
Withstanding
Voltage
CSR0830 - 2W
CSR1225
Features:
Please refer to the High Power Resistor Application Note (page 6) for more information on designing and implementing
high power resistor types.
•
0402 to 2512 & 1225 sizes available
• Power ratings to 3W
• Low inductance – less than 0.2nH typically
• RoHS compliant
• Non-standard resistance values available
• 2010 and 2512 sizes available with narrow terminations (CSRN)
Electrical Specifications
Rev Date: 11/05/2012 2 www.seielect.com
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CSR/CSRN Series
Thick Film Current Sensing Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
0.039 ± 0.002 0.020 ± 0.002 0.013 ± 0.004 0.010 ± 0.004 0.008 ± 0.004 inches
1.00 ± 0.05 0.50 ± 0.05 0.32 ± 0.10 0.25 ± 0.10 0.20 ± 0.10 mm
0.063 ± 0.004 0.031 ± 0.004 0.018 ± 0.004 0.012 ± 0.008 0.012 ± 0.008 inches
1.60 ± 0.10 0.80 ± 0.10 0.45 ± 0.10 0.30 ± 0.20 0.30 ± 0.20 mm
0.079 ± 0.006 0.049 ± 0.006 0.022 ± 0.004 0.012 ± 0.008 0.016 ± 0.010 inches
2.00 ± 0.15 1.25 ± 0.15 0.55 ± 0.10 0.30 ± 0.20 0.40 ± 0.25 mm
0.120 ± 0.006 0.061 ± 0.006 0.022 ± 0.004 0.020 ± 0.012 0.016 ± 0.010 inches
3.05 ± 0.15 1.55 ± 0.15 0.55 ± 0.10 0.50 ± 0.30 0.40 ± 0.25 mm
0.122 ± 0.004 0.102 ± 0.006 0.022 ± 0.004 0.020 ± 0.012 0.020 ± 0.010 inches
3.10 ± 0.10 2.60 ± 0.15 0.55 ± 0.10 0.50 ± 0.30 0.50 ± 0.25 mm
0.079 ± 0.008 0.148 ± 0.008 0.024 ± 0.004 0.016 ± 0.008 0.016 ± 0.008 inches
2.00 ± 0.20 3.75 ± 0.20 0.60 ± 0.10 0.40 ± 0.20 0.40 ± 0.20 mm
0.079 ± 0.008 0.295 ± 0.012 0.024 ± 0.004 0.016 ± 0.008 0.016 ± 0.008 inches
2.00 ± 0.20 7.50 ± 0.30 0.60 ± 0.10 0.40 ± 0.20 0.40 ± 0.20 mm
0.197 ± 0.008 0.100 ± 0.008 0.020 ± 0.006 0.068 ± 0.006 0.067 ± 0.006 inches
5.00 ± 0.20 2.54 ± 0.20 0.50 ± 0.15 1.72 ± 0.15 1.70 ± 0.15 mm
0.197 ± 0.008 0.096 ± 0.006 0.024 ± 0.006 0.024 ± 0.012 0.020 ± 0.010 inches
5.00 ± 0.20 2.45 ± 0.15 0.60 ± 0.15 0.60 ± 0.30 0.50 ± 0.25 mm
0.252 ± 0.008 0.126 ± 0.008 0.020 ± 0.006 0.075 ± 0.006 0.075 ± 0.006 inches
6.40 ± 0.20 3.20 ± 0.20 0.50 ± 0.15 1.90 ± 0.15 1.90 ± 0.15 mm
0.250 ± 0.008 0.124 ± 0.006 0.024 ± 0.004 0.024 ± 0.012 0.022 ± 0.010 inches
6.35 ± 0.20 3.15 ± 0.15 0.60 ± 0.10 0.60 ± 0.30 0.55 ± 0.25 mm
0.122 ± 0.006 0.248 ± 0.006 0.035 ± 0.006 0.024 ± 0.012 0.022 ± 0.010 inches
3.10 ± 0.15 6.30 ± 0.15 0.90 ± 0.15 0.60 ± 0.30 0.55 ± 0.25 mm
L
Body Length
W
Body Width
H
Body Height
a
Top Termination
b
CSR1225
CSR0805
CSR1206
CSRN0815
CSRN2010
CSR0830
CSR2010
CSR2512
Type / Code
CSRN2512
Unit
CSR0402
CSR1210
Bottom Termination
CSR0603
Mechanical Specifications
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CSR/CSRN Series
Thick Film Current Sensing Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
0.020 0.020 0.024 ± 0.008 inches
0.50 0.50 0.60 ± 0.20 mm
0.031 0.039 0.035 ± 0.008 inches
0.80 1.00 0.90 ± 0.20 mm
0.039 0.039 0.053 ± 0.008 inches
1.00 1.00 1.35 ± 0.20 mm
0.079 0.045 0.067 ± 0.008 inches
2.00 1.15 1.70 ± 0.20 mm
0.079 0.045 0.098 ± 0.008 inches
2.00 1.15 2.50 ± 0.20 mm
0.039 0.071 0.154 ± 0.008 inches
1.00 1.80 3.90 ± 0.20 mm
0.039 0.071 0.299 ± 0.008 inches
1.00 1.80 7.60 ± 0.20 mm
0.142 0.055 0.098 ± 0.008 inches
3.60 1.40 2.50 ± 0.20 mm
0.142 0.055 0.098 ± 0.008 inches
3.60 1.40 2.50 ± 0.20 mm
0.193 0.063 0.122 ± 0.008 inches
4.90 1.60 3.10 ± 0.20 mm
0.193 0.063 0.122 ± 0.008 inches
4.90 1.60 3.10 ± 0.20 mm
0.079 0.079 0.252 ± 0.008 inches
2.00 2.00 6.40 ± 0.20 mm
CA B UnitType / Code
CSR1206
CSR2010
CSR2512
CSR0402
CSR0603
CSR0805
CSR1210
CSR1225
CSRN0815
CSR0830
CSRN2010
CSRN2512
Solder Pad Dimensions
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CSR/CSRN Series
Thick Film Current Sensing Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
Test Test Specification Test Conditions Test Limits Typical
High Temperature Exposure MIL-STD-202 Method 108
1000 hrs. @ T=155°C. Unpowered. Measurement
at 24 ± 4 hours after test conclusion.
2%, 5% Tol:(±1.5% +0.10Ω)
≤ 0.5%
Temperature Cycling JESD22 Method JA-104
1000 Cycles (-55°C to +125°C) Measurement at
24 ± 4 hours after test conclusion.
30 min maximum dwell time at each temperature
extreme. 1 min. maximum transition time.
2%, 5% Tol:(±1.5% +0.10Ω) ≤ 0.5%
Biased Humidity MIL-STD-202 Method 103
1000 hours 85°C/85% RH. Note: Specified conditions:
10% of operating power. Measurement at 24 ± 4
hours after test conclusion.
2%, 5% Tol:(±2.00% +0.10Ω) ≤ 0.5%
Operational Life MIL-STD-202 Method 108 Condition D Steady State T
A
=125°C at rated power.
Measurement at 24 ± 4 hours after test conclusion.
2%, 5% Tol:(±2.00% +0.10Ω) ≤ 0.5%
External Visual MIL-STD 883 Method 2009 Electrical test not required. Inspect device
construction, marking and workmanship
-- Pass
Physical Dimensions JESD22 Method JB-100
Verify physical dimensions to the applicable device
detail specification. Note: User(s) and Suppliers spec.
Electrical test not required.
-- Pass
Resistance to Solvents MIL-STD 202 Method 215 Note: Aqueous wash chemical - OKEM Clean or
equivalent. Do not use banned solvents.
Marking unsmeared Pass
Mechanical Shock MIL-STD 202 Method 213 Figure 1 of Method 213. Condition C.
2%, 5% Tol:(±1.00% +0.05Ω)
≤ 0.5%
Vibration MIL-STD 202 Method 204
5 g's for 20 min., 12 cycles each of 3 orientations.
Note: Use 8"X5" PCB 0.031" thick 7 secure points on
one long side and 2 secure points at corners of
opposite sides. Parts mounted within 2" from any
secure point. Test from 10 - 2000 Hz.
2%, 5% Tol:(±1.00% +0.05Ω) ≤ 0.5%
Resistance to Soldering Heat MIL-STD 202 Method 210 Condition B no pre-heat of samples. Note: Single
wave solder - Procedure 2 for SMD.
2%, 5% Tol:(±1.00% +0.05Ω)
≤ 0.5%
ESD AEC-Q200-002
With the electrometer in direct contact with the
discharge tip, verify the voltage setting at levels
of ±500 V, ±1kV, ±2kV, ±4kV, ±8kV.
The electrometer reading shall be within ±10%
for voltages from 500 V to ≤ 8 kV.
-- Pass
Solderability J-STD-002
Electrical test not required. Magnification 50X.
Conditions:
SMD:
a) Method B, 4 hrs @ 155°C dry heat @ 235°C.
b) Method B @ 215°C category 3.
c) Method D category 3 @ 260°C.
> 95% Coverage Pass
Electrical Characterization User Spec
Parametrically test per lot and sample size
requirements, summary to show Min, Max, Mean and
Standard Deviation at room as well as Min and Max
operating temperatures.
-- Pass
Flammability UL-94
V-0 or V-1 are acceptable.
Electrical test not required.
of pine board.
Pass
Board Flex AEC-Q200-005 60 second minimum holding time.
2%, 5% Tol:(±1.00% +0.05Ω)
≤ 0.5%
Terminal Strength (SMD)
AEC-Q200-006
None broken
Pass
Flame Retardance
AEC-Q200-001
No flame
Pass
Operating Temperature Range: -55ºC to +155ºC
Performance Characteristics
Rev Date: 11/05/2012 5 www.seielect.com
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CSR/CSRN Series
Thick Film Current Sensing Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
1 2 3 4 5 6 7 8 9 10 11 12 13
C S R 1 2 0 6 F T 1 0 L 0
Nominal
Resistance
Tolerance
0.01 1%
Type Description Code Wattage Size Tolerance SEI Types Pkg Qty Description Code
CSR Standard 1/8S 0.125W 0402 1% 0402 10,000
CSRN Narrow Terminations 1/8 0.125W 0603 2% 0603, 0805, 1206 5,000
1/4 0.25W 0805 5% 2010, 2512 4,000
1/2 0.5W 1206 0815, 1225 2,000
1S 1W 0815 0402
1 1W 2010 0603, 0805, 1206
2 2W 2512 2010, 2512
3 3W 1225 0815, 1225
R
Packaging
CSR 1/2 R
SEI Type Code
7" reel
paper tape
7" reel
plastic tape
7" reel
paper tape I
7" reel
plastic tape
1,000
Size
CSR 0402 Code Tol Code Quantity
0603 F 1% 10,000
0805 G 2% 5,000
1206 J 5% 4,000
1210 2,000
0815
0830
2010
2512
1225
2010, 2512
7" Reel
Paper Tape
7" Reel
Plastic Tape 0815, 0830, 12252W
3W
0.5W 0815, 0830, 1225
2W 0603, 0805, 1206, 1210 1,000
0402
Product Series Power Tolerance Resistance ValuePackaging
0.125WStandard Description Size
0.125W
0603, 0805, 1206, 12100.25W T
0402
7" Reel
Paper Tape
7" Reel
Plastic Tape
0.5W
1 ohm = 1R00
0.051 ohm = 51L0
CSRN
Narrow
Terminations
2010, 2512
Four characters with the
multiplier used as the
decimal holder.
"L" used as multiplier of
10
-3
for any value
under 0.1 ohm
1W
1W 0.35 ohm = R350
K
0
Percent Rated Power (%)
100
-55ºC 70ºC
80
60
40
20
155ºC
-60 -40 -20 0 20 40 60 80 100
Ambient Temperature (ºC)
120 140 160 180
Power Derating Curve:
Legacy Part Number (before January 3, 2011):
How to Order
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CSR/CSRN Series
Thick Film Current Sensing 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 degrees C for the CSS / CSSH series and 70
degrees 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 105C.
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.
The 102 degrees C heat rise shown here would indicate there will be additional thermal reduction techniques
needed to keep this part under 105C 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
degrees 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, vias 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.