CSM Series
Vishay Foil Resistors
Bulk Metal® Technology High Precision, Current Sensing, Power
Surface Mount, Metal Strip Resistor with Resistance Value from 1 m
Rated Power up to 3 W and TCR to 0 ± 15 ppm/°C Maximum
FEATURES
Ω,
• 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)
No minimum order quantity and any value at any
tolerance available within resistance range.
• 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
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
C
• Thermal EMF: 3 µV/°C (DC offset error, significant for low
values)
R
I
I
• Maximum current: up to 54 A
A
D
• 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
V
~
=
Zin
∞
Four terminal (Kelvin) design: allows for precise and
accurate measurements.
FIGURE 1 - POWER DERATING CURVE
+ 70 °C
• Screening in accordance with EEE-INST002 available
(per MIL-PRF-55342 and MIL-PRF-49465; see 303144
and 303145 datasheets)
100
80
60
40
20
0
• 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
- 65 - 50 - 25
0
25
50
75
100 125 150 170
Ambient Temperature (°C)
• Compliant to RoHS directive 2002/95/EC
TABLE 1 - SPECIFICATIONS
PARAMETER
CSM2512
CSM3637
Resistance Range
1 mΩ
to 200 mΩ (1)
3 W ( 1 m
Ω
to 10 m
Ω)
Power Rating at 70 °C
Maximum Current (3)
Tolerance
1 W (2)
31 A
2 W (> 10 m
Ω
to 200 mΩ)
54 A
± 0.5 % (1 m
Ω
to < 3 m
to 200 m
Ω
)
± 0.5 % (1 m
± 0.1 % (2 m
Ω
to < 2 m
to 200 mΩ)
Ω)
± 0.1 % (3 m
Ω
Ω
)
Ω
Temperature Coefficient
Max. (- 55 °C to + 125 °C,
± 50 ppm/°C (1 m
± 15 ppm/°C (3 m
± 10 ppm/°C (3 m to 10 m
Ω
to < 3 m
to 200 m
) is available on request (4)
Ω
)
± 25 ppm/°C (1 m
± 15 ppm/°C (3 m
± 10 ppm/°C (1 m to 10 m
Ω
to < 3 m
to 200 m
Ω
) is available on request (4)
Ω)
Ω
Ω
)
Ω
Ω)
+ 25 °C Ref.)
Ω
Ω
Ω
Operating Temperature
Range
- 65 °C to + 170 °C
(P x R)1/2
Maximum Working Voltage
Weight (Maximum)
0.09 g
0.29 g
Notes
(1)
(2)
(3)
(4)
For CSM2512 up to 500 mΩ please contact application engineering: foil@vishaypg.com
For values above 0.1 Ω derate linearly to 80 % rated power at 0.5 Ω
Maximum current for a given resistance value is calculated using
Please contact application engineering: foil@vishaypg.com
I = P ⁄ R
* Pb containing terminations are not RoHS compliant, exemptions may apply
Document Number: 63089
Revision: 3-May-11
For any questions, contact: foil@vishaypg.com
www.vishayfoilresistors.com
1