IMPROVED PRODUCT
Bulk Metal
®
Technology High Precision, Current Sensing, Power Surface
Mount, Metal Strip Resistor with Improved Stability 0.05 %, Resistance
Value from 10 m
Ω
, Rated Power to 1 W and TCR to 0 ± 15 ppm/°C
Document Number: 63145 For any questions, contact: foil@vishay.com www.vishay.com
Revision: 14-May-09 1
CSM2512S
Vishay Foil Resistors
The CSMS series of low value current sense resistors
provides power and precision in a four terminal, surface
mount configuration. Its all welded construction is made
up of a Bulk Metal® resistive element with plated copper
terminations.
Our application engineering department is available to
advise and make recommendations.
For non-standard technical requirements and special
applications, please contact us.
FEATURES
•Temperature coefficient of resistance (TCR):
(- 55 °C to + 125 °C, + 25 °C ref.)
± 15 ppm/°C maximum
± 10 ppm/°C maximum on special request
•Load life stability to ± 0.05 % (70 °C, 2000 h
at rated power)
•Power rating: 1 W
•Tolerance: ± 0.1 %
•Resistance range: 10 mΩ to 100 mΩ
•Vishay Foil resistors are not restricted to standard values,
we can supply specific “as required” values at no extra cost
or delivery (e.g. 10.2345 mΩ vs. 10 mΩ)
•Short time overload: ± 0.1 % typical
•Thermal EMF: < 3 µV/°C
•Maximum current: up to 10 A
•Surface mount configuration
•Four terminal (Kelvin) design: allows for precision accurate
measurements
•Terminal finish: lead (Pb)-free, tin/lead alloy
•Compliant to RoHS directive 2002/95/EC
•Prototype samples available from 72 h. For more
information, please contact foil@vishay.com
•Screening in accordance with EEE-INST002 available
(MIL-PRF 55342 and MIL-PRF 49465)
•For better performances please contact us
* Pb containing terminations are RoHS compliant, exemptions may apply
I1E1E2I2
R
V
I
I
FIGURE 1 - POWER DERATING CURVE
- 65 - 50 - 25 0 25 50 75 100 125 150 170
Ambient Temperature (°C)
100
80
60
40
20
0
Percent of Rated Power
+ 70 °C
TABLE 1 - PERFORMANCE SPECIFICATIONS
PARAMETER CSM2512S
Resistance Range 10 mΩ to 100 mΩ
Power Rating at 70 °C 1 W
Maximum Current 10 A
Maximum Working Voltage (P x R)1/2
Tightest Tolerance ± 0.1 %
Temperature Coefficient Maximum (- 55 °C to + 125 °C, + 25 °C ref.) ± 15 ppm/°C, ± 10 ppm/°C is available
Operating Temperature Range - 65 °C to + 170 °C
Weight (maximum) 0.09 g
CSM2512S
Vishay Foil Resistors
www.vishay.com For any questions, contact: foil@vishay.com Document Number: 63145
2Revision: 14-May-09
IMPROVED PRODUCT
Note
(1) White dot indicates top side of part for mounting purposes
FIGURE 2 - DIMENSIONS AND IMPRINTING in inches (millimeters)
DIMENSIONS - TOLERANCES ± 0.010 (± 0.254), * ± 0.015 (± 0.381)
RESISTANCE RANGE (Ω)L W H T A B
0.01 to 0.1 0.250 (6.350) 0.125 (3.175) 0.025 (0.635) 0.030 (0.762) 0.030 (0.762)* 0.032 (0.813)*
LAND PATTERN DIMENSIONS - TOLERANCES ± 0.003 (± 0.076)
RESISTANCE RANGE (Ω)a b c d e l
0.01 to 0.1 0.065 (1.65) 0.145 (3.68) 0.045 (1.14) 0.021 (0.53) 0.055 (1.39) 0.160 (4.06)
TABLE 2 - CSM2512S PERFORMANCE SPECIFICATIONS
TEST CONDITIONS MIL-PRF-49465B
ΔR LIMITS
TYPICAL ΔR
LIMITS
MAXIMUM
ΔR LIMITS
Thermal Shock - 55 °C to + 150 °C, 1000 cycles, 15 min at
each extreme ± (0.5 % + 0.0005R) 0.1 % 0.2 %
Load Life Stability 2000 h, 70 °C at rated power ± (1.0 % + 0.0005R) 0.05 % 0.2 %
Bias Humidity 85 °C, 85 % humidity
10 % bias, 1000 h ± (0.5 % + 0.0005R) 0.05 % 0.2 %
Short Time Overload 5 x rated power for 5 s ± (0.5 % + 0.0005R) 0.1 % 0.2 %
High Temperature Exposure 1000 h, 170 °C ± (1.0 % + 0.0005R) 0.2 % 0.3 %
Low Temperature Storage MIL-PRF-49465 ± (0.5 % + 0.0005R) 0.05 % 0.1 %
Moisture resistance MIL-STD-202, method 106, 0 % power,
7a and 7b not required ± (0.5 % + 0.0005R) 0.02 % 0.05 %
Shock 100 g, 6 ms ± (0.1 % + 0.0005R) 0.02 % 0.05 %
Vibration (10 Hz to 2000 Hz) 20 g ± (0.1 % + 0.0005R) 0.02 % 0.05 %
Resistance to Soldering Heat 10 s to 12 s at + 260 °C ± (0.25 % + 0.0005R) 0.05 % 0.1 %
Solderability MIL-STD-202 95 % coverage -
CSM2512S DIMENSIONS
H
A
W
B
T
L
(1) CSM2512S LAND PATTERN
Kelvin Connection
I
1
, I
2
- Current
E
1
, E
2
- Sense
e
I
a
dc
b
E1
E2
I1
I2
Document Number: 63145 For any questions, contact: foil@vishay.com www.vishay.com
Revision: 14-May-09 3
CSM2512S
Vishay Foil Resistors
IMPROVED PRODUCT
Note
(1) For non-standard requests, please contact application engineering.
TABLE 3 - GLOBAL PART NUMBER INFORMATION
NEW GLOBAL PART NUMBER: Y44870R10000B0R (preferred part number format)
DENOTES PRECISION VALUE CHARACTERISTICS (1)
YR = Ω0 = standard part, tin/lead termination
9 = standard part, lead (Pb)-free termination
1 - 999 = custom
PRODUCT CODE RESISTANCE TOLERANCE PACKAGING
4487 = CSM2512S B= ± 0.1 %
C= ± 0.25 %
D= ± 0.5 %
F= ± 1.0 %
W= waffle pack
R= tape and reel
FOR EXAMPLE: ABOVE GLOBAL ORDER Y4487 0R10000 B 0 R:
TYPE: CSM2512S
VALUE: 100.0 mΩ
ABSOLUTE TOLERANCE: ± 0.1 %
TERMINATION: standard tin/lead
PACKAGING: tape and reel
HISTORICAL PART NUMBER: CSM2512S 0R1000 B B T (will continue to be used)
CSM2512S 0R1000 B B T
MODEL OHMIC VALUE ABS. TOLERANCE TERMINATION PACKAGING
0R1000 = 0.100 ΩB= ± 0.1 %
C= ± 0.25 %
D= ± 0.5 %
F= ± 1.0 %
S= lead (Pb)-free
B= tin/lead
T= tape and reel
W= waffle pack
4870 100RY4 B00 R0
Document Number: 91000 www.vishay.com
Revision: 18-Jul-08 1
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Vishay
All product specifications and data are subject to change without notice.
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(collectively, “Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein
or in any other disclosure relating to any product.
Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any
information provided herein to the maximum extent permitted by law. The product specifications do not expand or
otherwise modify Vishay’s terms and conditions of purchase, including but not limited to the warranty expressed
therein, which apply to these products.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this
document or by any conduct of Vishay.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless
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