CSM Series
Vishay Foil Resistors
Bulk Metal
®
Technology High Precision, Current Sensing, Power
Surface Mount, Metal Strip Resistor with Resistance Value from 1 m
Ω
,
Rated Power up to 3 W and TCR to 0 ± 15 ppm/°C Maximum
FEATURES
•
Temperature coefficient of resistance:
± 15 ppm/°C max. (- 55 °C to + 125 °C, + 25 °C
ref.); ± 10 ppm/°C max. (- 55 °C to + 125 °C,
+ 25 °C ref.) is available on request (see table 1)
•
Power rating: 1 W to 3 W
•
Resistance tolerance: ± 0.1 %
•
Resistance range: 1 mΩ to 200 mΩ
(1)
•
Vishay Foil resistors are not restricted to standard values,
specific “as required” values can be supplied at no extra
cost or delivery (e.g. 2.3456 mΩ vs. 2 mΩ)
•
Load life stability to ± 0.2 % (70 °C, 2000 h at rated power)
•
Short time overload: ± 0.1 % typical
•
Thermal EMF: 3 µV/°C (DC offset error, significant for low
values)
•
Maximum current: up to 54 A
•
Proprietary processing techniques produce low TCR, tight
tolerance and improve stability
•
Low inductance < 5 nH
•
Solderable terminations
•
Excellent frequency response to 50 MHz
•
Matched sets are available on request
•
Screening in accordance with EEE-INST002 available
(per MIL-PRF-55342 and MIL-PRF-49465; see 303144
and 303145 datasheets)
•
Terminal finishes available: lead (Pb)-free, tin/lead alloy
•
Prototype quantities available in just 5 working days
or sooner. For more information, please contact
foil@vishaypg.com
•
For better performance please contact Application
Engineering
•
Compliant to RoHS directive 2002/95/EC
No minimum order quantity and any value at any
tolerance available within resistance range.
Vishay Foil Resistors’ application engineering department is
available to advise and make recommendations.
For non-standard technical requirements and special
applications, please contact
foil@vishaypg.com.
B
I
A
Zin
~
∞
=
V
R
C
I
D
Four terminal (Kelvin) design: allows for precise and
accurate measurements.
FIGURE 1 - POWER DERATING CURVE
100
+ 70 °C
Rated Power (%)
80
60
40
20
0
- 65 - 50
- 25
0
25
50
75
100
125
150
170
Ambient Temperature (°C)
TABLE 1 - SPECIFICATIONS
PARAMETER
Resistance Range
Power Rating at 70 °C
Maximum Current
(3)
Tolerance
1 W
(2)
31 A
± 0.5 % (1 mΩ to < 3 mΩ)
± 0.1 % (3 mΩ to 200 mΩ)
± 50 ppm/°C (1 mΩ to < 3 mΩ)
± 15 ppm/°C (3 mΩ to 200 mΩ)
± 10 ppm/°C (3 mΩ to 10 mΩ) is available on request
(4)
CSM2512
1 mΩ to 200 mΩ
(1)
3 W ( 1 mΩ to 10 mΩ)
2 W (> 10 mΩ to 200 mΩ)
54 A
± 0.5 % (1 mΩ to < 2 mΩ)
± 0.1 % (2 mΩ to 200 mΩ)
± 25 ppm/°C (1 mΩ to < 3 mΩ)
± 15 ppm/°C (3 mΩ to 200 mΩ)
± 10 ppm/°C (1 mΩ to 10 mΩ) is available on request
(4)
CSM3637
Temperature Coefficient
Max. (- 55 °C to + 125 °C,
+ 25 °C Ref.)
Operating Temperature
- 65 °C to + 170 °C
Range
Maximum Working Voltage
(P x
R)
1/2
Weight (Maximum)
0.09 g
Notes
(1)
For CSM2512 up to 500 mΩ please contact application engineering:
foil@vishaypg.com
(2)
For values above 0.1
Ω
derate linearly to 80 % rated power at 0.5
Ω
(3)
Maximum current for a given resistance value is calculated using I
=
P
⁄
R
(4)
Please contact application engineering:
foil@vishaypg.com
* Pb containing terminations are not RoHS compliant, exemptions may apply
Document Number: 63089
Revision: 3-May-11
For any questions, contact:
foil@vishaypg.com
0.29 g
www.vishayfoilresistors.com
1
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