VCS232Z Datasheet, PDF (1/3 Pages) Vishay Siliconix – Ultra High Precision Z-Foil Power Current Sensing Resistor with Absolute TCR of ± 0.05 ppm/°C and Load Life Stability to ± 0.005%

VCS232Z (Z-Foil Technology)
Vishay Foil Resistors
Ultra High Precision Z-Foil Power Current Sensing Resistor with
Absolute TCR of ± 0.05 ppm/°C and Load Life Stability to ± 0.005%
FEATURES
• Temperature Coefficient of Resistance (TCR):
Product may not
be to scale
± 0.05 ppm/°C (Industrial range)
± 0.2 ppm/°C (MIL range)
Pb-free
Available
Any value at any tolerance available with resistance range
INTRODUCTION
VCS232Z is the industry’s first device to prove high rated
power, excellent load life stability along with low TCR and all
in one resistor.
The New Z-Foil Technology provides a significant reduction
of the resistive components sensitivity to ambient
temperature variations (TCR) and applied power changes
(PCR).
The latest development in Foil resistors technology have
reduced the temperature coefficient of Resistance (TCR), to
below ± 0.2 ppm/°C (part per million per degree centigrade).
± 0.05 ppm/°C Absolute TCR removes error due to
temperature gradients.
By taking advantage of the overall stability and reliability of
Vishay Bulk Metal^® Z-Foil resistors, designers can
significantly reduce circuit errors and greatly improve overall
circuit performances.
Model VCS232Z is a 4 lead kelvin connected device.
Our Application Engineering Department is available to
advise and make recommendations for non-standard
technical requirements and special applications. Please
contact us.
T ^{• Resistance Range: 0.25Ω to 500Ω}
RoHS*
• Power Coefficient “ΔR due to self heating”: ^COMPLIANT
4 ppm/W typical
• Load Life stability: < ± 0.005% 2W at 25°C for 2000 hours
• Power rating @ + 25°C: 2 Watts
• Tolerance: to ± 0.02%
• Electrostatic Discharge (ESD) above 25 000 Volts
C ^{• Short Time overload ≤ ± 0.005%}
• Non hot spot design
• Thermal EMF: 0.05µV/°C
U ^{• Rise time: 1ns without ringing}
D ^{• Current Noise < - 40dB}
• Non Inductive/Capacitive design
• Voltage Coefficient < 0.1 ppm/V
• Thermal Finishes available Lead (Pb)-free
O ^{Tin/Lead Alloy}
• Maximum current: 3 Amps
• For better performances please contact us
FIGURE 1 - TRIMMING TO VALUES
(CONCEPTUAL ILLUSTRATION)
R _{Current Path}
P ^{After Trimming}
Current Path
Before Trimming
Trimming Process
APPLICATIONS
• Automatic Test Equipment (ATE)
• High Precision Instrumentation
• Electron Beam application
• Current Sensing applications
• Pulse applications
• Military
Removes this Material
from Shorting Strip Area
• Power amplifier
Changing Current Path
and Increasing
Resistance
• Power supplies
NOTE: Foil shown in black, etched spaces in white
FIGURE 2 - DIMENSIONS in inches (millimeters)
EW ^L
N
D₂
D₁
LS
LT
W
H
LL
Tin/Lead or Lead (Pb)-free
Solder coated
copper leads
I₁
E₁
E₂
I₂
Dimensions - Maximum Inches (mm) - unless otherwise noted
MODEL
L
H
W
LL
LS
LT
D₁
(Minimum) ± 0.20 (± 0.5) ± 0.20 (± 0.5) (Nominal)
D₂
(Nominal)
VCS232Z 1.240 (32.0) 0.512 (13.0) 0.177 (4.50) 0.500 (12.7) 0.688 (17.5) 1.083 (27.5) 0.040 (1.00) 0.032 (0.80)
* Pb containing terminations are not RoHS compliant, exemptions may apply
SALES
• AMERICAS: [e-mail]
• ASIA/JAPAN: [e-mail]
• UK/HOLLAND/SCANDINAVIA: [e-mail]
• GERMANY/CZECH REPUBLIC/AUSTRIA: [e-mail] • FRANCE/SWITZERLAND/SOUTHERN EUROPE: [e-mail] • ISRAEL: [e-mail]
Document Number: 63095
Revision: 08-Aug-06
For technical questions, contact: [e-mail]
www.vishay.com
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