VCS1625 Datasheet, PDF (1/4 Pages) Vishay Siliconix – High Precision Foil Surface Mount Current Sensing Chip Resistors with TCR of ± 2 ppm/°C and Load Life Stability of ± 0.02 %

VCS1625
Vishay Foil Resistors
High Precision Foil Surface Mount Current Sensing Chip
Resistors with TCR of ± 2 ppm/°C and Load Life Stability of ± 0.02 %
Any value at any tolerance available within resistance range
INTRODUCTION
Model VCS1625 is a surface mount resistor designed with
4 pads for Kelvin connection. Utilizing Vishay Bulk Metal^®
foil as the resistance element, it provides performance
capabilities far greater than other resistor technologies can
supply in a product of comparable size.
This small device dissipates heat almost entirely through the
pads so surface mount users are encouraged to be generous
with the board’s pads and traces. Gold terminations are
available on special order.
Our application engineering department is available to
advise and to make recommendations. For non standard
technical requirements and special applications, please
contact us.
FIGURE 1 - POWER DERATING CURVE¹⁾
- 55 °C
100
+ 70 °C
75
50
25
0
- 75 - 50 - 25 0 + 25 + 50 + 75 + 100 + 125 + 150 + 175
Ambient Temperature (°C)
Note:
1. Power rating at + 70 °C
1 W on alumina substrate
0.5 W on FR4
FEATURES
• Temperature coefficient of resistance (TCR):
± 2.0 ppm/°C typical (- 55 °C to + 125 °C,
+ 25 °C ref.) (see table 1)
• Tolerance: to ± 0.1 %
• Load life stability:
± 0.02 % at 70 °C, 2000 h at rated power
Pb-free
Available
RoHS*
COMPLIANT
• Electrostatic discharge (ESD) above 25 000 V
• Short time overload ≤ 0.005 %
• Ohmic values: 0.01 Ω to 10 Ω (for higher or lower values
please contact us)
• Non inductive, non capacitive design
• Power rating: 1 W at + 70 °C (figure 1)
• Current rating: 5 A maximum
• Thermal EMF: 0.05 µV/°C typical
• Non hot spot design
• Current noise: < - 40 dB
• Rise time: 1 ns without ringing
• Voltage coefficient: < 0.1 ppm/V
• Non inductive: < 0.08 µH
• For better performances please review VCS1625Z (Z-foil)
data sheet
TERMINATIONS
• Two lead (Pb)-free options are available:
gold plated or tin plated
• Tin/lead plated
APPLICATIONS
• Automatic test equipment (ATE)
Electrical
Schematic
• Airborne (in heads-up display systems)
I₁
E₁
• High precision instrumentation
R
• Electron beam recording equipment
• Electron microscopes
• Current sensing applications
I2
E₂
• Forced balance electronic scales
• Applications that require superior frequency stability
• Military
• Medical
TABLE 1 - TOLERANCE AND TCR VS. RESISTANCE VALUE (- 55 °C to + 125 °C, + 25° Ref.)
VALUE (Ω)
TOLERANCE
TYPICAL TCR
MAXIMUM TCR
> 2R000 to 10R000
0.2 %, 0.5 %, 1 %
± 2 ppm/°C
± 5 ppm/°C
> 0R500 to 2R000
0.5 %, 1 %
± 2 ppm/°C
± 10 ppm/°C
> 0R100 to 0R500
1%
± 2 ppm/°C
± 15 ppm/°C
> 0R050 to 0R100
1%
± 2 ppm/°C
± 20 ppm/°C
> 0R030 to 0R050
1%
± 2 ppm/°C
± 30 ppm/°C
> 0R010 to 0R030
1%
± 2 ppm/°C
± 50 ppm/°C
* Pb containing materials are not RoHS compliant, exemptions may apply
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For any questions, contact: [e-mail]
Document Number: 63023
Revision: 19-Feb-08